[Glass] [GLASS] Seaside - growing extent - normal?

[Dale Henrichs via Glass]

Lawrence,

Are you doing regular Mark for collects? Are you running the maintenance 
vm along with you seaside servers?

Seaside produces persistent garbage (persistent session state that 
eventually times out) when it processes requests so if you do not run 
the maintenance vm the sessions are not expired and if you do not run 
mfc regularly the expired sessions are not cleaned up ...

Another source of growth could be the Object Log ... (use 
`ObjectLogEntry initalize` to efficiently reset the Object Log ... pay 
attention to the mispelling ... thats another story). If you are getting 
continuations saved to the object log, the stacks that are saved, can 
hang onto a lot of session state, that even though expired will not be 
garbage collected because of references from the continuation in the 
object log keep it alive ...

The best way to shrink your extent (once we understand why it is 
growing) is to do a backup and then restore into a virgin extent 
($GEMSTONE/bin/extent0.seaside.dbf)...

Dale

On 3/25/15 8:34 AM, Lawrence Kellogg via Glass wrote:
> Well, Amazon sent me a note that they are having hardware trouble on 
> my instance, so they shut it down. It looks like they’re threatening 
> to take the thing offline permanently so I’m trying to save my work 
> with an AMI and move it somewhere else, if I have to.
>
> I finally got Gemstone/Seaside back up and running and noticed these 
> lines in the Seaside log file. These kind of messages go on once a day 
> for weeks. Is this normal?
>
> --- 03/07/2015 02:44:14 PM UTC ---
>
>   Extent = 
> !#dbf!/opt/gemstone/GemStone64Bit2.4.4.1-x86_64.Linux/seaside/data/extent0.dbf
>
>       has grown to 22528 megabytes.
>
>   Repository has grown to 22528 megabytes.
>
>
>   Extent = 
> !#dbf!/opt/gemstone/GemStone64Bit2.4.4.1-x86_64.Linux/seaside/data/extent0.dbf
>
>       has grown to 22544 megabytes.
>
>   Repository has grown to 22544 megabytes.
>
>
> --- 03/08/2015 03:31:45 PM UTC ---
>
>   Extent = 
> !#dbf!/opt/gemstone/GemStone64Bit2.4.4.1-x86_64.Linux/seaside/data/extent0.dbf
>
>       has grown to 22560 megabytes.
>
>   Repository has grown to 22560 megabytes.
>
>
>   Extent = 
> !#dbf!/opt/gemstone/GemStone64Bit2.4.4.1-x86_64.Linux/seaside/data/extent0.dbf
>
>       has grown to 22576 megabytes.
>
>   Repository has grown to 22576 megabytes.
>
>
> --- 03/10/2015 03:19:34 AM UTC ---
>
>   Extent = 
> !#dbf!/opt/gemstone/GemStone64Bit2.4.4.1-x86_64.Linux/seaside/data/extent0.dbf
>
>       has grown to 22592 megabytes.
>
>   Repository has grown to 22592 megabytes.
>
>
> --- 03/10/2015 03:46:39 PM UTC ---
>
>   Extent = 
> !#dbf!/opt/gemstone/GemStone64Bit2.4.4.1-x86_64.Linux/seaside/data/extent0.dbf
>
>       has grown to 22608 megabytes.
>
>   Repository has grown to 22608 megabytes.
>
>
>   Extent = 
> !#dbf!/opt/gemstone/GemStone64Bit2.4.4.1-x86_64.Linux/seaside/data/extent0.dbf
>
>       has grown to 22624 megabytes.
>
>   Repository has grown to 22624 megabytes.
>
>
>
> My extent has now grown to
>
> -rw------- 1 seasideuser seasideuser 23735566336 Mar 25 15:31 extent0.dbf
>
>
> I don’t get a lot of traffic so I’m a little surprised at the growth. 
> Should I try to shrink the extent?
>
> I suppose I should also do a SystemRepository backup, if I can 
> remember the commands.
>
> Best,
>
> Larry
>
>
>
>
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