[Glass] problem update: Zinc server with Seaside (3.1)
Dale K. Henrichs
dale.henrichs at gemtalksystems.com
Sun Dec 22 13:23:57 PST 2013
The logging that you are showing isn't the scenario that I was addressing with the SocketStream changes (not saying that the SocketStream changes are correct) ... In my scenario I was seeing two consecutive 'Executing request/response loop' and when the code I wrote was trying to solve the problem of what was happening during the second request/response loop that was running on a socket that claimed to be read ready, but consistently returned 0 bytes of data ....
BTW, I never got a good http response either when I hit the url ... as if no Seaside applications were initialized ...
When the conditions are "right" and you start getting a second 'Executing request/response loop' in the log, you will run into the errors that I "solved.
I guess I am curious why you are getting a timeout. Most of my experience with the http servers is behind FastCGI, so I'm nat familiar with the browse socket behavior...
... is that correct behavior for all socket connections to browsers? Doesn't that mean that if you are running 10 requests per second you will accumulate 300 open socket connections waiting for timeouts (assuming a 30 second timeout)? ... and at 100 requests per second you accumulate 3000 open socket connections? I think this type of thing was the reason I abandoned apache in favor of lighthppd back in the day, because apache was stopped waiting for socket connections time out and close .... at least that was my theory and I could be wrong ...
Dale
----- Original Message -----
| From: "Johan Brichau" <johan at yesplan.be>
| To: "Dale K. Henrichs" <dale.henrichs at gemtalksystems.com>
| Cc: glass at lists.gemtalksystems.com
| Sent: Sunday, December 22, 2013 10:54:30 AM
| Subject: Re: [Glass] problem update: Zinc server with Seaside (3.1)
| Dale,
| With the new implementation of #atEnd, I see an error:
| --transcript--2013-12-22 10:39:3.5306130886077881E+01 302143 D
| Executing request/response loop
| --transcript--2013-12-22 10:39:3.5307526111602783E+01 302143 I Read
| aZnRequest(GET /welcome)
| --transcript--2013-12-22 10:39:3.5339780092239380E+01 302143 T GET
| /welcome 200 4733B 32ms
| --transcript--2013-12-22 10:39:3.5340270996093750E+01 302143 I Wrote
| aZnResponse(200 OK text/html;charset=utf-8 4733B)
| --transcript--2013-12-22 10:39:3.5341017007827759E+01 302143 D a
| ZnUnknownHttpMethod occurred (error 2710) while reading request
| --transcript--2013-12-22 10:39:3.5341190099716187E+01 302143 D
| Closing stream
| With the old implementation of #atEnd, everything works (again) and I
| also do not have the error:
| --transcript--2013-12-22 10:46:2.9496814012527466E+01 694893 D
| Executing request/response loop
| --transcript--2013-12-22 10:46:2.9498058080673218E+01 694893 I Read
| aZnRequest(GET /welcome)
| --transcript--2013-12-22 10:46:2.9528563976287842E+01 694893 T GET
| /welcome 200 4733B 30ms
| --transcript--2013-12-22 10:46:2.9529000997543335E+01 694893 I Wrote
| aZnResponse(200 OK text/html;charset=utf-8 4733B)
| --transcript--2013-12-22 10:46:5.9529083013534546E+01 694893 D a
| ConnectionTimedOut occurred (error 2710), Data receive timed out.
| while reading request
| --transcript--2013-12-22 10:46:5.9529268026351929E+01 694893 D
| Closing stream
| The only problem is… this codebase used to misbehave instantly. So… I
| agree that there is a condition that does not occur anymore but I
| cannot characterize it.
| In any case, I think the failsafe code in #next to check if there is
| anything in the buffer after the receiveData should be sufficient
| because the change to #atEnd also changes its semantics and this
| appears to yield different results (see above).
| I compared with the behaviour in Pharo and there I’m seeing the same
| log as the second one above.
| Johan
| On 22 Dec 2013, at 18:30, Dale K. Henrichs <
| dale.henrichs at gemtalksystems.com > wrote:
| | Johan,
|
| | The implementation of atEnd only becomes important when you hit one
| | of "null connections" if you get one of those, I think that
| | SocketStream misbehaves .... the socket is alive, says that it will
| | not block on read and then proceeds to return no data ... this
| | could
| | very easily be "an illegal combination", but if it occurs things go
| | crazy ...
|
| | If you are able to avoid the "null connection" (my guess) then
| | SocketStream works fine ...
|
| | So I think we need to understand where these "null connections" are
| | coming from and make sure that they don't reappear.
|
| | Can you confirm that you are not seeing the "null connections" as
| | well ... or are you surviving through them?
|
| | Dale
|
| | ----- Original Message -----
|
| | | From: "Johan Brichau" < johan at yesplan.be >
| |
|
| | | To: "Dale K. Henrichs" < dale.henrichs at gemtalksystems.com >
| |
|
| | | Cc: glass at lists.gemtalksystems.com
| |
|
| | | Sent: Sunday, December 22, 2013 4:10:18 AM
| |
|
| | | Subject: Re: [Glass] problem update: Zinc server with Seaside
| | | (3.1)
| |
|
| | | Dale,
| |
|
| | | It’s becoming quite a crazy issue…
| |
|
| | | I’m now executing the Zinc adaptor perfectly _without_ any of the
| | | changes to SocketStream.
| |
|
| | | I even did a complete load of Seaside31 and Zinc in a virgin
| | | image
| | | (without the fixes for SocketStream) and it works.
| |
|
| | | I got there because I was fiddling around to get to the origin of
| | | the
| | | second connection. To me, the original implementation of #atEnd
| | | is
| | | correct because #receiveData throws a timeout exception if it
| | | does
| | | not receive any data from the socket. However, I noticed that
| | | this
| | | does not happen in the Gs implementation of SocketStream because
| | | the
| | | timeout is set to 0. But now I’m unable to test my theory because
| | | the original implementation works…
| |
|
| | | So, there probably is still something fishy going on because we
| | | both
| | | had different kinds of errors before with the same codebase.
| |
|
| | | Johan
| |
|
| | | On 22 Dec 2013, at 05:10, Dale K. Henrichs <
| | | dale.henrichs at gemtalksystems.com > wrote:
| |
|
| | | | Yes I was seeing the second odd (null) connection, too and
| | | | didn't
| | | | figure out where that was coming from ... Didn't try things in
| | | | topaz
| | | | ...
| | |
| |
|
| | | | I never did characterize the out-of-memory cause either ...
| | |
| |
|
| | | | I just focused on solving the spinning in empty buffer problem
| | | | ...
| | | | there are probably some remaining gotchas hanging around ...
| | |
| |
|
| | | | Dale
| | |
| |
|
| | | | ----- Original Message -----
| | |
| |
|
| | | | | From: "Johan Brichau" < johan at yesplan.be >
| | | |
| | |
| |
|
| | | | | To: "Dale K. Henrichs" < dale.henrichs at gemtalksystems.com >
| | | |
| | |
| |
|
| | | | | Cc: glass at lists.gemtalksystems.com
| | | |
| | |
| |
|
| | | | | Sent: Saturday, December 21, 2013 3:08:34 AM
| | | |
| | |
| |
|
| | | | | Subject: Re: [Glass] problem update: Zinc server with Seaside
| | | | | (3.1)
| | | |
| | |
| |
|
| | | | | Obviously, once I turn on the logging, the dropped
| | | | | connections
| | | | | disappear too…. (see log below)
| | | |
| | |
| |
|
| | | | | I’m wondering about the ZnUnknownHttpMethod before closing
| | | | | the
| | | | | stream. It tries to read from an empty stream actually…
| | | |
| | |
| |
|
| | | | | But we are definitely making progress…
| | | |
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|
| | | | | I’m off Xmas shopping today but will look at this in the
| | | | | evening..
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|
| | | | | Johan
| | | |
| | |
| |
|
| | | | | topaz 1> topaz 1> topaz 1> topaz 1> Zinc Server started on
| | | | | port
| | | | | 8383
| | | |
| | |
| |
|
| | | | | --transcript--2013-12-21 03:03:1.1953476905822754E+01 455751
| | | | | I
| | | | | Starting ZnManagingMultiThreadedServer HTTP port 8383
| | | |
| | |
| |
|
| | | | | --transcript--2013-12-21 03:03:1.1953932046890259E+01 455683
| | | | | D
| | | | | Initializing server socket
| | | |
| | |
| |
|
| | | | | --transcript--'new stream 116656385'
| | | |
| | |
| |
|
| | | | | --transcript--2013-12-21 03:03:1.8871202945709229E+01 455692
| | | | | D
| | | | | Executing request/response loop
| | | |
| | |
| |
|
| | | | | --transcript--2013-12-21 03:03:1.8872347116470337E+01 455692
| | | | | I
| | | | | Read
| | | | | aZnRequest(GET /welcome)
| | | |
| | |
| |
|
| | | | | --transcript--2013-12-21 03:03:1.8899705886840820E+01 455692
| | | | | T
| | | | | GET
| | | | | /welcome 200 4733B 27ms
| | | |
| | |
| |
|
| | | | | --transcript--2013-12-21 03:03:1.8900135993957520E+01 455692
| | | | | I
| | | | | Wrote
| | | | | aZnResponse(200 OK text/html;charset=utf-8 4733B)
| | | |
| | |
| |
|
| | | | | --transcript--2013-12-21 03:03:1.8900440931320190E+01 455692
| | | | | D
| | | | | a
| | | | | ZnUnknownHttpMethod occurred (error 2710) while reading
| | | | | request
| | | |
| | |
| |
|
| | | | | --transcript--2013-12-21 03:03:1.8900584936141968E+01 455692
| | | | | D
| | | | | Closing stream 116656385
| | | |
| | |
| |
|
| | | | | On 21 Dec 2013, at 10:51, Johan Brichau < johan at yesplan.be >
| | | | | wrote:
| | | |
| | |
| |
|
| | | | | | Ha, a second try does yield better results. The start in
| | | | | | topaz
| | | | | | does
| | | | | | not have the out-of-mem.
| | | | |
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|
| | | | | | I do see a connection being dropped every other request….
| | | | | | but
| | | | | | there
| | | | | | is progress!
| | | | |
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|
| | | | | | Don’t know what made it fail similarly the first time. The
| | | | | | only
| | | | | | change I did between this email and the one below is a
| | | | | | restart
| | | | | | of
| | | | | | the stone...
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| | | | | | Johan
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| | | | | | On 21 Dec 2013, at 10:42, Johan Brichau < johan at yesplan.be
| | | | | | >
| | | | | | wrote:
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| | | | | | | Dale,
| | | | | |
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| | | | | | | Unfortunately I’m getting the same result in topaz and
| | | | | | | less
| | | | | | | stable
| | | | | | | behaviour from gemtools (connections are dropped)
| | | | | |
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| | | | | | | Looking into it…
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| | | | | | | Johan
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| | | | | | | On 20 Dec 2013, at 04:31, Dale K. Henrichs <
| | | | | | | dale.henrichs at gemtalksystems.com > wrote:
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| | | | | | | | Johan,
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|
| | | | | | | | I moved the package SocketStream to the repo (changed
| | | | | | | | baseline)
| | | | | | | | and
| | | | | | | | commit on socketstream_fix ... let me know if this
| | | | | | | | works
| | | | | | | | for
| | | | | | | | you..
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| | | | | | | | Dale
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| | | | | | | | ----- Original Message -----
| | | | | | |
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|
| | | | | | | | | From: "Dale K. Henrichs" <
| | | | | | | | | dale.henrichs at gemtalksystems.com
| | | | | | | | | >
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| | | | | | | | | To: "Johan Brichau" < johan at yesplan.be >
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| | | | | | | | | Cc: glass at lists.gemtalksystems.com
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| | | | | | | | | Sent: Thursday, December 19, 2013 5:45:26 PM
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|
| | | | | | | | | Subject: Re: [Glass] problem update: Zinc server with
| | | | | | | | | Seaside
| | | | | | | | | (3.1)
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| | | | | | | | | I think I've got things working now ... I will push a
| | | | | | | | | branch
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| | | | | | | | | glassdb/zinc with my changes ... I need to clean
| | | | | | | | | things
| | | | | | | | | up
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| | | | | | | | | bit
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| | | | | | | | | test with topaz ... right now its running in tODE ...
| | | | | | | | | I'm
| | | | | | | | | still
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| | | | | | | | | getting two connections per request, but it's much
| | | | | | | | | more
| | | | | | | | | stable
| | | | | | | | | now
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| | | | | | | | | ----- Original Message -----
| | | | | | |
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| | | | | | | | | | From: "Johan Brichau" < johan at yesplan.be >
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| | | | | | | | | | To: "Dale K. Henrichs" <
| | | | | | | | | | dale.henrichs at gemtalksystems.com
| | | | | | | | | | >
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| | | | | | | | | | Cc: glass at lists.gemtalksystems.com
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| | | | | | | | | | Sent: Thursday, December 19, 2013 7:46:37 AM
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| | | | | | | | | | Subject: Re: [Glass] problem update: Zinc server
| | | | | | | | | | with
| | | | | | | | | | Seaside
| | | | | | | | | | (3.1)
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| | | | | | | | | | Hi Dale,
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| | | | | | | | | | Thanks for these pointers.
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| | | | | | | | | | I will look into it asap.
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| | | | | | | | | | One thing I noticed is that after I merged the
| | | | | | | | | | latest
| | | | | | | | | | changes
| | | | | | | | | | into
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| | | | | | | | | | Seaside3.1 [1], a lot less processes were spawning
| | | | | | | | | | and
| | | | | | | | | | it
| | | | | | | | | | took
| | | | | | | | | | more
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| | | | | | | | | | time before the system ran out of memory.
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| | | | | | | | | | But it might just have been a coincidence...
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| | | | | | | | | | Johan
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| | | | | | | | | | [1] https://github.com/glassdb/Seaside31/pull/5
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| | | | | | | | | | On 19 Dec 2013, at 06:38, Dale K. Henrichs
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| | | | | | | | | | < dale.henrichs at gemtalksystems.com > wrote:
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| | | | | | | | | | > Just a touch more info:
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| | | | | | | | | | > ZnMultiThreadedServer>>listenLoop sents #repeat
| | | | | | | | | | > to
| | | | | | | | | | > a
| | | | | | | | | | > block
| | | | | | | | | | > ...
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| | | | | | | | | | > if `serverSocket isValid` returns false, the loop
| | | | | | | | | | > is
| | | | | | | | | | > exited
| | | | | | | | | | > but
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| | | | | | | | | | > it
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| | | | | | | | | | > launches another
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| | | | | | | | | | > #listenLoop ... if we get consistent invalid
| | | | | | | | | | > serverSockets,
| | | | | | | | | | > this
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| | | | | | | | | | > guy will spin out of control..
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| | | | | | | | | | > Inside the block,
| | | | | | | | | | > ZnMultiThreadedServer>>serveConnectionsOn:
| | | | | | | | | | > is
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| | | | | | | | | | > called (right before the repeat).
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| | | | | | | | | | > In ZnMultiThreadedServer>>serveConnectionsOn: if
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| | | | | | | | | | > #waitForAcceptFor:
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| | | | | | | | | | > returns a non-nil response, we are off to the
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| | | | | | | | | | > process and a return to
| | | | | | | | | | > ZnMultiThreadedServer>>listenLoop
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| | | | | | | | | | > itself spins up a new call to
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| | | | | | | | | | > ZnMultiThreadedServer>>serveConnectionsOn: ....
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| | | | | | | | | | > Soooo, it looks like
| | | | | | | | | | > SocketStreamSocket>>waitForAcceptFor:
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| | | | | | | | | | > better function correctly .... and serverSocket
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| | | | | | | | | | > into terminal invalidity...
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| | | | | | | | | | > Some halts or breakpoints in and around these
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| | | | | | | | | | > should yield some good information ... or point
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| | | | | | | | | | > productive direction.
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| | | | | | | | | | > Dale
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| | | | | | | | | | > From: "Dale K. Henrichs" <
| | | | | | | | | | > dale.henrichs at gemtalksystems.com
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| | | | | | | | | | > To: "Johan Brichau" < johan at yesplan.be >
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| | | | | | | | | | > Cc: glass at lists.gemtalksystems.com
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| | | | | | | | | | > Sent: Wednesday, December 18, 2013 8:59:47 PM
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| | | | | | | | | | > Subject: Re: [Glass] problem update: Zinc server
| | | | | | | | | | > with
| | | | | | | | | | > Seaside
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| | | | | | | | | | > (3.1)
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| | | | | | | | | | > Johan,
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| | | | | | | | | | > I've collected more info on two processes[1] ...
| | | | | | | | | | > first
| | | | | | | | | | > the
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| | | | | | | | | | > that
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| | | | | | | | | | > gets an "index out of range error" and the other
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| | | | | | | | | | > sitting in the process list waiting for more
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| | | | | | | | | | > the
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| | | | | | | | | | > socket, but the socket was closed (at leasted
| | | | | | | | | | > #isConnected
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| | | | | | | | | | > false).
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| | | | | | | | | | > I hit the out of memory earlier but didn't
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| | | | | | | | | | > info ... I'm assuming that the multi-threaded boy
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| | | | | | | | | | > error somewhere and spinning away like crazy ...
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| | | | | | | | | | > Need to catch the error in progress and perhaps
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| | | | | | | | | | > Sven
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| | | | | | | | | | > if there is supposed to be a "deadman switch" on
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| | | | | | | | | | > avoid
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| | | | | | | | | | > infinite errors ..
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| | | | | | | | | | > Dale
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| | | | | | | | | | > [1]
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| | | | | | | | | | > https://github.com/dalehenrich/todeHome/blob/master/home/seaside3.1.0/stacks
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| | | | | | | | | | > From: "Dale K. Henrichs" <
| | | | | | | | | | > dale.henrichs at gemtalksystems.com
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| | | | | | | | | | > To: "Johan Brichau" < johan at yesplan.be >
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| | | | | | | | | | > Cc: glass at lists.gemtalksystems.com
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| | | | | | | | | | > Sent: Wednesday, December 18, 2013 6:39:13 PM
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| | | | | | | | | | > Subject: Re: [Glass] problem update: Zinc server
| | | | | | | | | | > with
| | | | | | | | | | > Seaside
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| | | | | | | | | | > (3.1)
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| | | | | | | | | | > Here's the stack:
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| | | | | | | | | | > 1. OffsetError(AbstractException)>>_signalWith:
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| | | | | | | | | | > 2. OffsetError(AbstractException)>>signal @2 line
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| | | | | | | | | | > 3. ByteArray(Object)>>_error:args: @15 line 11
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| | | | | | | | | | > 4. ByteArray(Object)>>_errorIndexOutOfRange: @2
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| | | | | | | | | | > 5. ByteArray>>at: @4 line 13
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| | | | | | | | | | > 6. SocketStream>>next @13 line 10
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| | | | | | | | | | > 7. ZnLineReader>>processNext @5 line 4
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| | | | | | | | | | > 8. ZnLineReader>>nextLine @3 line 3
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| | | | | | | | | | > 9. ZnRequestLine>>readFrom: @3 line 3
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| | | | | | | | | | > 10. ZnRequestLine class>>readFrom: @3 line 3
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| | | | | | | | | | > 11. ZnRequest>>readHeaderFrom: @2 line 2
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| | | | | | | | | | > 12. ZnRequest(ZnMessage)>>readBinaryFrom: @2 line
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| | | | | | | | | | > 13. ZnRequest class(ZnMessage
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| | | | | | | | | | > @3
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| | | | | | | | | | > 14. [] in
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| | | | | | | | | | > ExecBlock1(ZnZincServerAdaptor)>>configureServerForBinaryReading
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| | | | | | | | | | > @2 line 4
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| | | | | | | | | | > 15. [] in
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnSingleThreadedServer)>>readRequest:
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| | | | | | | | | | > @3 line 6
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| | | | | | | | | | > 16. [] in
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| | | | | | | | | | > ExecBlock0(ZnSingleThreadedServer)>>withMaximumEntitySizeDo:
| | | | | | | | | | > @2
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| | | | | | | | | | > line 6
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| | | | | | | | | | > 17. [] in ZnMaximumEntitySize
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| | | | | | | | | | > class)>>value:during: @3 line 9
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| | | | | | | | | | > 18. ZnMaximumEntitySize class(ExecBlock)>>ensure:
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| | | | | | | | | | > 19. ZnMaximumEntitySize class(DynamicVariable
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| | | | | | | | | | > class)>>value:during:
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| | | | | | | | | | > @6 line 10
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| | | | | | | | | | > 20.
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnSingleThreadedServer)>>withMaximumEntitySizeDo:
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| | | | | | | | | | > @5 line 5
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| | | | | | | | | | > 21.
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnSingleThreadedServer)>>readRequest:
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| | | | | | | | | | > @2 line 6
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| | | | | | | | | | > 22. [] in
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnMultiThreadedServer)>>readRequestSafely:
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| | | | | | | | | | > @2 line 4
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| | | | | | | | | | > 23.
| | | | | | | | | | > ZnManagingMultiThreadedServer(ExecBlock)>>on:do:
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| | | | | | | | | | > 24.
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnMultiThreadedServer)>>readRequestSafely:
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| | | | | | | | | | > @3 line 5
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| | | | | | | | | | > 25.
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnMultiThreadedServer)>>executeOneRequestResponseOn:
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| | | | | | | | | | > @2 line 7
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| | | | | | | | | | > 26. [] in
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnMultiThreadedServer)>>executeRequestResponseLoopOn:
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| | | | | | | | | | > @2 line 10
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| | | | | | | | | | > 27. [] in ZnCurrentServer class(DynamicVariable
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| | | | | | | | | | > class)>>value:during: @3 line 9
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| | | | | | | | | | > 28. ZnCurrentServer class(ExecBlock)>>ensure: @2
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| | | | | | | | | | > 29. ZnCurrentServer class(DynamicVariable
| | | | | | | | | | > class)>>value:during:
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| | | | | | | | | | > @6
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| | | | | | | | | | > line 10
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| | | | | | | | | | > 30.
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnMultiThreadedServer)>>executeRequestResponseLoopOn:
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| | | | | | | | | | > @4 line 8
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| | | | | | | | | | > 31. [] in
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnMultiThreadedServer)>>serveConnectionsOn:
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| | | | | | | | | | > 32.
| | | | | | | | | | > ZnManagingMultiThreadedServer(ExecBlock)>>ensure:
| | | | | | | | | | > @2
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| | | | | | | | | | > 33. [] in
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnMultiThreadedServer)>>serveConnectionsOn:
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| | | | | | | | | | > 34. [] in ExecBlock0(ExecBlock)>>ifCurtailed: @2
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| | | | | | | | | | > 35. ExecBlock0(ExecBlock)>>ensure: @2 line 12
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| | | | | | | | | | > 36.
| | | | | | | | | | > ZnManagingMultiThreadedServer(ExecBlock)>>ifCurtailed:
| | | | | | | | | | > @3
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| | | | | | | | | | > 37. [] in
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| | | | | | | | | | > ZnManagingMultiThreadedServer(ZnMultiThreadedServer)>>serveConnectionsOn:
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| | | | | | | | | | > @2 line 11
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| | | | | | | | | | > 38. GsProcess>>_start @7 line 16
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| | | | | | | | | | > 39. UndefinedObject(GsNMethod
| | | | | | | | | | > class)>>_gsReturnToC
| | | | | | | | | | > @1
| | | | | | | | | | > line
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| | | | | | | | | | > From: "Dale K. Henrichs" <
| | | | | | | | | | > dale.henrichs at gemtalksystems.com
| | | | | | | | | | > >
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| | | | | | | | | | > To: "Johan Brichau" < johan at yesplan.be >
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| | | | | | | | | | > Cc: glass at lists.gemtalksystems.com
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| | | | | | | | | | > Sent: Wednesday, December 18, 2013 6:26:01 PM
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| | | | | | | | | | > Subject: Re: [Glass] problem update: Zinc server
| | | | | | | | | | > with
| | | | | | | | | | > Seaside
| | | | | | |
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| | | | | | | | | | > (3.1)
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| | | | | | | | | | > Johan,
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| | | | | | | | | | > I've finally started monkeying with this and the
| | | | | | | | | | > first
| | | | | | | | | | > thing
| | | | | | | | | | > I
| | | | | | |
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| | | | | | | | | | > ran
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| | | | | | | | | | > into (running this under tODE and trying to
| | | | | | | | | | > duplicate
| | | | | | | | | | > the
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| | | | | | | | | | > GemTools
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| | | | | | | | | | > error condition) was an error involving
| | | | | | | | | | > SocketStream
| | | | | | | | | | > and
| | | | | | | | | | > an
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| | | | | | | | | | > apparent buffer overflow ... it looks to me that
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| | | | | | | | | | > SocketStream>>next has no logic to refill the
| | | | | | | | | | > buffer
| | | | | | | | | | > once
| | | | | | | | | | > it
| | | | | | | | | | > is
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| | | | | | | | | | > full ... at least I got a stack in which the
| | | | | | | | | | > ByteArray
| | | | | | | | | | > buffer
| | | | | | | | | | > was
| | | | | | |
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| | | | | | | | | | > accessed at slot 4097 (1 larger than the buffer):
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| | | | | | | | | | >
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| | | | | | | | | | > There are three other processes floating around
| | | | | | | | | | > as
| | | | | | | | | | > well
| | | | | | | | | | > ...
| | | | | | | | | | > I'll
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| | | | | | | | | | > keep digging ...
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| | | | | | | | | | >
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| | | | | | | | | | > Dale
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| | | | | | | | | | > From: "Johan Brichau" < johan at yesplan.be >
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| | | | | | | | | | > To: glass at lists.gemtalksystems.com
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| | | | | | | | | | > Sent: Sunday, December 15, 2013 1:20:20 PM
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| | | | | | | | | | > Subject: [Glass] problem update: Zinc server with
| | | | | | | | | | > Seaside
| | | | | | | | | | > (3.1)
| | | | | | |
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| | | | | | | | | | > Hi all,
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| | | | | | | | | | > I’m working on the Zinc server adaptor for
| | | | | | | | | | > Seaside
| | | | | | | | | | > 3.1
| | | | | | | | | | > but
| | | | | | | | | | > I
| | | | | | | | | | > got
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| | | | | | | | | | > stuck.
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| | | | | | | | | | > Launching the following from Gemtools brings up
| | | | | | | | | | > the
| | | | | | | | | | > server
| | | | | | | | | | > and
| | | | | | |
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| | | | | | | | | | > makes it respond to requests nicely. Trying to do
| | | | | | | | | | > the
| | | | | | | | | | > same
| | | | | | | | | | > from
| | | | | | | | | | > a
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| | | | | | | | | | > topaz session though, immediately throws an
| | | | | | | | | | > out-of-mem
| | | | | | | | | | > exception.
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| | | | | | | | | | >
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| | | | | | | | | | > WAGsZincAdaptor startOn: 8383
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| | | | | | | | | | >
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| | | | | | | | | | > If you break the blocking call in Gemtools and
| | | | | | | | | | > run
| | | | | | | | | | > the
| | | | | | | | | | > line
| | | | | | | | | | > above
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| | | | | | | | | | > again, you also run out-of-mem after a couple of
| | | | | | | | | | > times
| | | | | | | | | | > (but
| | | | | | | | | | > only
| | | | | | |
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| | | | | | | | | | > after _also_ connecting to the server from your
| | | | | | | | | | > web
| | | | | | | | | | > browser).
| | | | | | |
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| | | | | | | | | | > First question about this is why that does not
| | | | | | | | | | > happen
| | | | | | | | | | > in
| | | | | | | | | | > gem
| | | | | | |
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| | | | | | | | | | > tools?
| | | | | | |
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| | | | | | | | | | > I tried turning the auto commit off but that did
| | | | | | | | | | > not
| | | | | | | | | | > change
| | | | | | |
| | | | | |
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| | | | | | | | | | > anything.
| | | | | | |
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| | | | | | | | | | >
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| | | | | | | | | | > Following advice in [1], I started investigating
| | | | | | | | | | > from
| | | | | | | | | | > gemtools
| | | | | | |
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| | | | | | | | | | > and
| | | | | | |
| | | | | |
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| | | | | | | | | | > got this for the byte sizes in temp obj memory on
| | | | | | | | | | > 75%
| | | | | | | | | | > full:
| | | | | | |
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| | | | | | | | | | >
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| | | | | | | | | | > #'ByteArray'->22153440,
| | | | | | | | | | > #'GsMethodDictionary'->3073088,
| | | | | | |
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| | | | | | | | | | > #'GsMethodLookupCache'->2224064,
| | | | | | | | | | > #'GsProcess'->562224,
| | | | | | |
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| | | | | | | | | | > #'String'->415504, #'Array'->340168,
| | | | | | | | | | > #'SocketStream'->322680,
| | | | | | |
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| | | | | | | | | | > #'ExecBlock'->201664, #'VariableContext'->175552,
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| | | | | | | | | | > #'SocketStreamSocket'->150696, …0
| | | | | | |
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| | | | | | | | | | >
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| | | | | | | | | | > The process browser shows over 100 threads
| | | | | | | | | | > displayed
| | | | | | | | | | > as
| | | | | | | | | | > follows:
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| | | | | | | | | | >
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| | | | | | | | | | > (priority=25) ready [oop= …. ]
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| | | | | | | | | | >
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| | | | | | | | | | > I guess this is where Dale started having
| | | | | | | | | | > nightmares.
| | | | | | | | | | > The
| | | | | | | | | | > stack
| | | | | | |
| | | | | |
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| | | | | | | | | | > traces show the out-of-mem always happens in the
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| | | | | | | | | | > ZnNetworkingUtils>>setSocketStreamParameters:
| | | | | | | | | | > method.
| | | | | | |
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| | | | | | | | | | >
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| | | | | | | | | | > All of this is using the current Zinc version on
| | | | | | | | | | > github
| | | | | | | | | | > for
| | | | | | |
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| | | | | | | | | | > gemstone 3.1 [2] and my version of the Seaside
| | | | | | | | | | > 3.1
| | | | | | | | | | > port
| | | | | | | | | | > [3]
| | | | | | |
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| | | | | | | | | | > To try, load Seaside from my repo, load the
| | | | | | | | | | > ‘Zinc-Seaside’
| | | | | | | | | | > group
| | | | | | |
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| | | | | | | | | | > from the baseline and hit the above.
| | | | | | |
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| | | | | | | | | | >
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| | | | | | | | | | > Any ideas are welcome
| | | | | | |
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| | | | | | | | | | >
| | | | | | |
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| | | | | | | | | | > Johan
| | | | | | |
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| | | | | | | | | | >
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| | | | | | | | | | > [1]
| | | | | | |
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| | | | | | | | | | > http://gemstonesoup.wordpress.com/2008/11/19/gemstone-101-managing-out-of-memory-situations/
| | | | | | |
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| | | | | | | | | | > [2]
| | | | | | | | | | > https://github.com/glassdb/zinc/tree/gemstone3.1
| | | | | | |
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| | | | | | | | | | > [3] https://github.com/jbrichau/Seaside31
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| | | | | | | | | | >
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| | | | | | | | | | > _______________________________________________
| | | | | | |
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| | | | | | | | | | > Glass mailing list
| | | | | | |
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| | | | | | | | | | > Glass at lists.gemtalksystems.com
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| | | | | | | | | | > http://lists.gemtalksystems.com/mailman/listinfo/glass
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