[Glass] JIT / native code [WAS] Re: Weird slowdown with a comparison

Dale K. Henrichs dale.henrichs at gemtalksystems.com
Sat Jan 4 08:36:59 PST 2014


Mariano, 

Yep that looks like a bug ... I'll report this one ... is there a chance that you can share your extent with us so that we can reproduce the bug? It might not be easy for us to isolate the problem otherwise. 

Thanks for the report. 

Dale 

----- Original Message -----

| From: "Mariano Martinez Peck" <marianopeck at gmail.com>
| To: "Dale K. Henrichs" <dale.henrichs at gemtalksystems.com>
| Cc: "John McIntosh" <johnmci at smalltalkconsulting.com>,
| glass at lists.gemtalksystems.com
| Sent: Friday, December 27, 2013 9:29:12 AM
| Subject: JIT / native code [WAS] Re: [Glass] Weird slowdown with a
| comparison

| On Tue, Dec 17, 2013 at 12:28 PM, Mariano Martinez Peck <
| marianopeck at gmail.com > wrote:

| | Thanks Dale. So..I can confirm that enabling the JIT in the seaside
| | gems increases performance quite a lot in my report. They decreased
| | to half :)
| 
| | Now... John pasted this:
| 

| | # This is set to allow breakpoints to be used ....
| 
| | # For production usage, set GEM_NATIVE_CODE_ENABLED
| 
| | # in the conf file for the appropriate gem
| 
| | # (see
| 
| | # $GEMSTONE/seaside/etc/maintenance30.conf
| 
| | # $GEMSTONE/seaside/etc/seaside30.conf)
| 
| | #
| 
| | GEM_NATIVE_CODE_ENABLED = FALSE;
| 

| | Notice the "This is set to allow breakpoints to be used".
| 
| | The admin guide says: "If any breakpoints are set in any methods,
| | native code is disabled. Native code is re-enabled when all
| | breakpoints have been removed"
| 

| | For me, I have 2 scenarios:
| 

| | 1) if someone press "remote debug" in a seaside walkback I really
| | want to be able to debug that with GemTools from the ObjectLog
| 
| | 2) if I put a halt somewhere in the code and I want to debug that
| | later
| 

| | I tested both enabling the JIT. 1) seems to work even with the JOT.
| | 2) does not work in the sense that the code is NOT interrupted by
| | the halt, it seems to simply continue executing and ignore it. So I
| | cannot see how this is exactly related to the above sentences. I
| | think I do see the "This is set to allow breakpoints to be used".
| | But I cannot understand the " "If any breakpoints are set in any
| | methods, native code is disabled. Native code is re-enabled when
| | all
| | breakpoints have been removed" "
| 
| | If I understand this, it means that native code would be disabled
| | automatically, the VM would start to interpret, and hence I would
| | expect the halt to interrupt. But that doesn't happen in my
| | case...the halt is ignored.
| 

| | Any clarification of the real implications of enabling the JIT
| | would
| | be appreciated.
| 

| | Thanks!
| 

| I continue my research with this topic. In my server (Linux box),
| everything works as described above. But....in my local OSX GemStone
| I have a real crash. I put a halt in a callback of Seaside. The
| adaptor is FastCGI. I clicked Remote Debug and the stack is written
| in the ObjectLog. Now...if I try to "Debug" and select that entry
| from the object log, my gem crash.

| SAME test case in the Linux-based works perfectly.

| Of course, if I switch to GEM_NATIVE_CODE_ENABLED = FALSE;
| in my /opt/gemstone/product/seaside/etc/seaside30.conf then I can
| debug without problem. So in fact it is a native code problem.

| In my case is not a big deal because locally I can put it in false,
| and the server works fine with true. But I thought about reporting
| it in case it is useful for you to find the cause.

| Here is the log:

| 14:04 mariano at MacBook-Pro-de-Mariano /opt/gemstone/log
| % cat gemnetobject25860.log
| _____________________________________________________________________________
| | NetLDI Child Task |
| | |
| | CLIENTHOST: MacBook-Pro-de-Mariano.local |
| | VERSION: 3.1.0.4, Mon Jun 17 13:14:05 2013 |
| | BUILD: gss64_3_1_0_x_branch-31024 |
| | BUILT FOR: Darwin (Mac) |
| | MODE: 64 bit |
| | RUNNING ON: 2-CPU MacBook-Pro-de-Mariano.local x86_64 (Darwin
| | 12.5.0 ) 2530MHz
| | MacBookPro5,1 2048MB |
| | PROCESS ID: 25860 DATE: 12/27/2013 14:03:29 ART |
| | USER IDS: REAL=mariano (501) EFFECTIVE=mariano (501) |
| | COMMAND:
| | /opt/gemstone/GemStone64Bit3.1.0.4-i386.Darwin/sys/gemnetobject |
| | TCP 63159 30 |
| |_____________________________________________________________________________|
| exeConfig -d path
| [Info]: the hostname is: MacBook-Pro-de-Mariano.local
| GEMSTONE is: "/opt/gemstone/product"
| gem's location is: /opt/gemstone/product/sys
| system config file is: /opt/gemstone/product/seaside/data/system.conf
| executable config file is: /opt/gemstone/product/seaside/data
| gem's arguments are: TCP 63159 30
| _____________________________________________________________________________
| | GemStone/S64 Object-Oriented Data Management System |
| | Copyright (C) VMware, Inc. 1986-2013 |
| | All rights reserved. |
| | Covered by U.S Patents: |
| | 6,256,637 Transactional virtual machine architecture |
| | 6,360,219 Object queues with concurrent updating |
| | 6,567,905 Generational Garbage Collector. |
| | 6,681,226 Selective Pessimistic Locking for a Concurrently
| | Updateable Database
| +-----------------------------------------------------------------------------+
| | PROGRAM: GEM, GemStone Session Process |
| | VERSION: 3.1.0.4, Mon Jun 17 13:14:05 2013 |
| | BUILD: gss64_3_1_0_x_branch-31024 |
| | BUILT FOR: Darwin (Mac) |
| | MODE: 64 bit |
| | RUNNING ON: 2-CPU MacBook-Pro-de-Mariano.local x86_64 (Darwin
| | 12.5.0 ) 2530MHz
| | MacBookPro5,1 2048MB |
| | PROCESS ID: 25860 DATE: 12/27/2013 14:03:29 ART |
| | USER IDS: REAL=mariano (501) EFFECTIVE=mariano (501) |
| +-----------------------------------------------------------------------------+
| | GEMSTONE_NRS_ALL =
| | #dir:$GEMSTONE_DATADIR#log:/$GEMSTONE_LOGDIR/%N%P.log#dir:/opt/gemstone/product/seaside/data
| |_____________________________________________________________________________|
| _____________________________________________________________________________
| | Configuration Files |
| | |
| | System File:
| | /opt/gemstone/GemStone64Bit3.1.0.4-i386.Darwin/seaside/data/system.conf
| | |
| | Executable File:
| | /opt/gemstone/GemStone64Bit3.1.0.4-i386.Darwin/seaside/data/gem.conf
| | Warning: File not found (errno=2,ENOENT, The file or directory
| | specified cannot
| | be found) |
| | using defaults. |
| |_____________________________________________________________________________|
| _____________________________________________________________________________
| | Gem Configuration Options for process id 25860 |
| |_____________________________________________________________________________|

| DUMP_OPTIONS = TRUE;
| GEM_GCI_LOG_ENABLED = FALSE;
| GEM_ABORT_MAX_CRS = 0;
| GEM_FREE_FRAME_CACHE_SIZE = -1;
| GEM_FREE_FRAME_LIMIT = -1;
| GEM_FREE_PAGEIDS_CACHE = 200;
| GEM_HALT_ON_ERROR = 0;
| GEM_KEEP_MIN_SOFTREFS = 0;
| GEM_MAX_SMALLTALK_STACK_DEPTH = 1000;
| GEM_NATIVE_CODE_ENABLED = TRUE;
| GEM_PRIVATE_PAGE_CACHE_KB = 960;
| GEM_PGSVR_COMPRESS_PAGE_TRANSFERS = FALSE;
| GEM_PGSVR_FREE_FRAME_CACHE_SIZE = -1;
| GEM_PGSVR_FREE_FRAME_LIMIT = -1;
| GEM_PGSVR_UPDATE_CACHE_ON_READ = FALSE;
| GEM_RPC_KEEPALIVE_INTERVAL = 0;
| GEM_RPCGCI_TIMEOUT = 0;
| GEM_RPC_USE_SSL = TRUE;
| GEM_SOFTREF_CLEANUP_PERCENT_MEM = 50;
| GEM_TEMPOBJ_AGGRESSIVE_STUBBING = TRUE;
| GEM_TEMPOBJ_CACHE_SIZE = 1800000;
| GEM_TEMPOBJ_MESPACE_SIZE = 0;
| GEM_TEMPOBJ_OOPMAP_SIZE = 0;
| GEM_TEMPOBJ_SCOPES_SIZE = 2000;
| GEM_TEMPOBJ_POMGEN_SIZE = 0;
| GEM_TEMPOBJ_POMGEN_PRUNE_ON_VOTE = 90;
| GEM_TEMPOBJ_POMGEN_SCAVENGE_INTERVAL = 1800;
| GEM_TEMPOBJ_START_ADDR not used on this platform
| LOG_WARNINGS = TRUE;
| SHR_NUM_FREE_FRAME_SERVERS = -1;
| SHR_PAGE_CACHE_LOCKED = FALSE;
| SHR_PAGE_CACHE_NUM_PROCS = 10233;
| SHR_PAGE_CACHE_NUM_SHARED_COUNTERS = 1900;
| SHR_PAGE_CACHE_PERMISSIONS = 660;
| SHR_PAGE_CACHE_SIZE_KB = 2000000;
| SHR_TARGET_FREE_FRAME_COUNT = -1;
| SHR_WELL_KNOWN_PORT_NUMBER = 0;
| (vmGc spaceSizes: eden init 2048K max 337536K , survivor init 384K
| max 56256K,
| vmGc old max 1349952K, code max 360000K, perm max 180032K, pom 10 *
| 150016K = 1500160K,
| vmGc remSet 33988K, meSpace max 1720460K oopMapSize 8388608 max
| footprint 5548M)
| [Info]: libssl-3.1.0.4-64.dylib: loaded
| cmdLine=

| [Info]: RPC client/gem/minimum GCI levels = 851/851/851
| [Info]: Client PID: 6317
| native code DISABLED, offset from code memory to libgcilnk.so exceeds
| 32bits
| native code error, emit_call_stub, jmp displacement exceeds 32bits ,
| methodId:3589377, ipOffset 56, native code disabled for remainder of
| session
| native code error, emit_call_stub, jmp displacement exceeds 32bits ,
| methodId:3589377, ipOffset 96, native code disabled for remainder of
| session
| native code error, emit_call displacement exceeds 32bits ,
| methodId:3589377, ipOffset 140, native code disabled for remainder
| of session
| native code error, emit_call_stub, jmp displacement exceeds 32bits ,
| methodId:3589377, ipOffset 144, native code disabled for remainder
| of session
| native code error, emit_call_stub, jmp displacement exceeds 32bits ,
| methodId:3589377, ipOffset 176, native code disabled for remainder
| of session
| [Info]: User ID: DataCurator
| [Info]: Repository: seaside
| [Info]: Session ID: 5
| [Info]: GCI Client Host: ::ffff:127.0.0.1
| [Info]: Page server PID: -1
| [Info]: Login Time: 12/27/2013 14:03:29.264 ART
| [Info]: libicudata-3.1.0.4-64.dylib: loaded
| [Info]: libicuuc-3.1.0.4-64.dylib: loaded
| [Info]: libicui18n-3.1.0.4-64.dylib: loaded
| GemStone signal handler: signal 11 (SIGSEGV), received from process 0
| userId 0
| si_code: 0, unknown SI_

| Gemstone Signal Handler: Signal 11, SIGSEGV Received
| HostFaultHandler: signal = 11
| info->si_signo = 11 = 0xb
| info->si_code = 0 = 0x0
| info->si_errno = 0 = 0x0
| info->si_addr = 0x0
| signal 11 , received from process 0 userId 0
| si_code: 0, unknown SI_

| Begin attempt to print C-level stack for current thread of process
| 25860 at: Fri Dec 27 14:03:46 ART 2013

| 0 libgcilnk-3.1.0.4-64.dylib 0x000000010135424b _Z15HostPrintCStackv
| + 158
| 1 libgcilnk-3.1.0.4-64.dylib 0x00000001013a34b6 HostFaultHandler +
| 838
| 2 libsystem_c.dylib 0x00007fff884d890a _sigtramp + 26
| 3 ??? 0x00007fff5fbf465c 0x0 + 140734799758940
| 4 libgcilnk-3.1.0.4-64.dylib 0x00000001011df7cd
| _Z19IntLpSupControlLoopP2omiPP10omObjSType + 605
| 5 libgcilnk-3.1.0.4-64.dylib 0x00000001011d6b38
| _Z16IntExecuteMethodP13IntStateSTypePP10omObjSTypeS3_i + 376
| 6 libgcilnk-3.1.0.4-64.dylib 0x00000001010974c2
| _ZL14executeFromCtxP2omyyyitiPKyi + 882
| 7 libgcilnk-3.1.0.4-64.dylib 0x0000000101097d15
| _Z23GemDoExecuteFromContextyyyitPy + 149
| 8 libgcilnk-3.1.0.4-64.dylib 0x000000010104e7ba
| _ZL12dispatchLoopP2omP13LgcStateSTypeP13RpcStateSType + 7754
| 9 libgcilnk-3.1.0.4-64.dylib 0x000000010105087f
| _Z12GemDoRpcLoopP2omP13LgcStateSTypeP19IntGciActStateSType + 479
| 10 libgcilnk-3.1.0.4-64.dylib 0x000000010103a914 _ZL9doConnectv + 516
| 11 libgcilnk-3.1.0.4-64.dylib 0x000000010103b0e1
| _ZL15dispatchCommandv + 817
| 12 libgcilnk-3.1.0.4-64.dylib 0x000000010103b6e1 _Z4GdbgPKci + 1281
| 13 libgcilnk-3.1.0.4-64.dylib 0x0000000101051afc gemMain + 2124
| 14 gem 0x0000000100001bd1 main + 376
| 15 gem 0x00000001000014b4 start + 52

| End of C-level stack for current thread process 25860

| _____________________________________________________________________________
| | Possible Internal Error: HostCoreDump invoked at 12/27/2013
| | 14:03:47.428 ART
| in process 25860

| __________________________________
| HostCoredump: Waiting 60 seconds for C Debugger to attach, process
| 25860

| --
| Mariano
| http://marianopeck.wordpress.com

| | On Sat, Dec 14, 2013 at 9:40 PM, Dale K. Henrichs <
| | dale.henrichs at gemtalksystems.com > wrote:
| 

| | | Mariano,
| | 
| 

| | | I'll see what the vms guys have to say about this ...
| | 
| 

| | | Dale
| | 
| 

| | | | From: "Mariano Martinez Peck" < marianopeck at gmail.com >
| | | 
| | 
| 
| | | | To: "John McIntosh" < johnmci at smalltalkconsulting.com >,
| | | | glass at lists.gemtalksystems.com
| | | 
| | 
| 
| | | | Sent: Thursday, December 12, 2013 10:58:23 AM
| | | 
| | 
| 
| | | | Subject: Re: [Glass] Weird slowdown with a comparison
| | | 
| | 
| 

| | | | On Thu, Dec 12, 2013 at 9:18 AM, Mariano Martinez Peck <
| | | | marianopeck at gmail.com > wrote:
| | | 
| | 
| 

| | | | | On Thu, Dec 12, 2013 at 12:04 AM, John McIntosh <
| | | | | johnmci at smalltalkconsulting.com > wrote:
| | | | 
| | | 
| | 
| 

| | | | | | You restart the stone?
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | Yes.
| | | | 
| | | 
| | 
| 

| | | | | | Also
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | To determine if native code is in use by the currently
| | | | | | executing
| | | | | | session, execute: GsProcess usingNativeCode
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | Weird...that gives false!!! yet, GEM_NATIVE_CODE_ENABLED is
| | | | | true...
| | | | 
| | | 
| | 
| 

| | | | | mmmm maybe GemTools gem and Topaz gems are started with a
| | | | | false?
| | | | 
| | | 
| | 
| 

| | | | | Strange...
| | | | 
| | | 
| | 
| 

| | | | OK.....I found out something. I was running this in my local
| | | | gemstone
| | | | (OSX). In the server I have a Linux box and there,
| | | | GEM_NATIVE_CODE_ENABLED was also true,
| | | 
| | 
| 
| | | | but GsProcess usingNativeCode also answered true, and indeed,
| | | | the
| | | | time to execute that is around 20ms (as I get in Pharo). So
| | | | that
| | | | is
| | | | the explanation of the difference.
| | | 
| | 
| 

| | | | The admin guide says: " Under some configurations on x86, in
| | | | particular with Darwin, the 32-bit offset limit my be exceeded
| | | | in
| | | | some cases with a very large temporary object cache. If this
| | | | occurs,
| | | | native code is disabled. " Maybe I am under this situation, I
| | | | don't
| | | | know. But my machine is 64 bits.
| | | 
| | 
| 

| | | | | | On Wed, Dec 11, 2013 at 9:57 PM, Mariano Martinez Peck <
| | | | | | marianopeck at gmail.com > wrote:
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | On Wed, Dec 11, 2013 at 11:42 PM, John McIntosh <
| | | | | | | johnmci at smalltalkconsulting.com > wrote:
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | | You know I've not played in this area but in
| | | | | | | | data/system.conf
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | | # This is set to allow breakpoints to be used ....
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | # For production usage, set GEM_NATIVE_CODE_ENABLED
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | # in the conf file for the appropriate gem
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | # (see
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | # $GEMSTONE/seaside/etc/maintenance30.conf
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | # $GEMSTONE/seaside/etc/seaside30.conf)
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | #
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | GEM_NATIVE_CODE_ENABLED = FALSE;
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | Wow...i didn't know the JIT could be enable/disabled.
| | | | | | | Nice!
| | | | | | | Thanks
| | | | | | | for letting me know.
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | I have just check using the Admin -> DoITs -> Gem
| | | | | | | Configuration
| | | | | | | Report from GemTools and it was already in TRUE.
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | Just in case, I edited
| | | | | | | /opt/gemstone/GemStone64Bit3.1.0.4-i386.Darwin/seaside/data/system.conf
| | | | | | | and add it to TRUE.
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | Still, I am having the same results :(
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | What is weird is that I can use breakpoint in
| | | | | | | GemStone...so
| | | | | | | maybe
| | | | | | | the
| | | | | | | JIT is not being run even if the boolean appears to be
| | | | | | | set..
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | But the default says it is TRUE.
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | Thanks,
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | | Admin manual states:
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | "By default, generation of native code for Smalltalk
| | | | | | | | methods
| | | | | | | | is
| | | | | | | | enabled. This is configured using the configuration
| | | | | | | | parameter
| | | | | | | | GEM_NATIVE_CODE_ENABLED. When native code is disabled,
| | | | | | | | execution
| | | | | | | | is
| | | | | | | | interpreted; behavior will be identical but somewhat
| | | | | | | | slower.
| | | | | | | | "
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | | See
| | | | | | | | http://downloads.gemtalksystems.com/docs/GemStone64/3.1.x/GS64-SysAdminGuide-3.1.pdf
| | | | | | | | page 84
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | You could fiddle, restart your stone and run your tests
| | | | | | | | again
| | | | | | | | to
| | | | | | | | see
| | | | | | | | what happens.
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | | On Wed, Dec 11, 2013 at 9:32 PM, Mariano Martinez Peck
| | | | | | | | <
| | | | | | | | marianopeck at gmail.com > wrote:
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | | | Hi,
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | | | I am profiling some reports that take some time in
| | | | | | | | | GemStone
| | | | | | | | | and
| | | | | | | | | I
| | | | | | | | | come to a place that I find weird. So I want to check
| | | | | | | | | with
| | | | | | | | | you
| | | | | | | | | to
| | | | | | | | | see if this is expected.
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | | | | char newline carriageReturn |
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | | char := $a.
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | | newline := Character lf.
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | | carriageReturn := Character cr.
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | | [1 to: 1000000 do: [ :i |
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | | char == carriageReturn or: [ char == newline ] .
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | | ]
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | | | | ] timeToRun
| | | | | | | | 
| | | | | | | 
| | | | | | 
| | | | | 
| | | | 
| | | 
| | 
| 

| | | | | | | | | The following code, takes approx 5 ms in Pharo (Cog).
| | | | | | | | | While
| | | | | | | | | in
| | | | | | | | | GemStone it takes me around 60ms. That is 12 times
| | | | | | | | | slower...
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| | | | | | | | | Am I doing something wrong? I used #to:do but
| | | | | | | | | #timesRepeat
| | | | | | | | | got
| | | | | | | | | similar results. I try to not affect GC by putting
| | | | | | | | | the
| | | | | | | | | stuff
| | | | | | | | | before
| | | | | | | | | the loop. I tried to run it several times just in
| | | | | | | | | case...
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| | | | | | | | | So....is that expected or I am missing something?
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| | | | | | | | | Thanks,
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| 

| | | | | | | | | --
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| | | | | | | | | Mariano
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| | | | | | | | | http://marianopeck.wordpress.com
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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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| | | | | | | | --
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| | | | | | | | ===========================================================================
| | | | | | | 
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| | | | | | | | John M. McIntosh < johnmci at smalltalkconsulting.com >
| | | | | | | 
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| 
| | | | | | | | Corporate Smalltalk Consulting Ltd. Twitter:
| | | | | | | | squeaker68882
| | | | | | | 
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| 
| | | | | | | | ===========================================================================
| | | | | | | 
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| 

| | | | | | | --
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| | | | | | | Mariano
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| | | | | | | http://marianopeck.wordpress.com
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| 

| | | | | | --
| | | | | 
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| 
| | | | | | ===========================================================================
| | | | | 
| | | | 
| | | 
| | 
| 
| | | | | | John M. McIntosh < johnmci at smalltalkconsulting.com >
| | | | | 
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| 
| | | | | | Corporate Smalltalk Consulting Ltd. Twitter: squeaker68882
| | | | | 
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| 
| | | | | | ===========================================================================
| | | | | 
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| 

| | | | | --
| | | | 
| | | 
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| 
| | | | | Mariano
| | | | 
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| 
| | | | | http://marianopeck.wordpress.com
| | | | 
| | | 
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| 

| | | | --
| | | 
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| 
| | | | Mariano
| | | 
| | 
| 
| | | | http://marianopeck.wordpress.com
| | | 
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| 

| | | | _______________________________________________
| | | 
| | 
| 
| | | | Glass mailing list
| | | 
| | 
| 
| | | | Glass at lists.gemtalksystems.com
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| 
| | | | http://lists.gemtalksystems.com/mailman/listinfo/glass
| | | 
| | 
| 

| | --
| 
| | Mariano
| 
| | http://marianopeck.wordpress.com
| 

| --
| Mariano
| http://marianopeck.wordpress.com
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