[Glass] Semaphore error in stone?

[Dale Henrichs]

Brodbeck,

Again, sorry for the slow response.
We have an internal bug recorded (bug #47499), that has similar error messages and there is a bugnote[1] that describes the problem in a bit more detail and describes a workaround ...
Let me know if this helps or not,
Dale

[1] https://gemtalksystems.com/data/bugnotes/47499.html
On Apr 20 2021, at 8:43 am, Brodbeck Andreas via Glass <glass at lists.gemtalksystems.com> wrote:
> Hi all!
>
> I have this "once/twice a day" problem, where my GsDevKit-based application terminates, and I can't find the root cause. According to the logs, the stone terminates. I am not sure, wether the reclaim gem or the stone is generating the error. Both logs have similar error messages. These lines from the stone log are probably the most important ones:
> from stone log:
> =============================
> ViaSiteTdu.log.1-ERROR:Semaphore failure errno 43 (stnSemIdx = 102)
> ViaSiteTdu.log.1:--- 04/19/21 22:33:17.502 CEST ---
> ViaSiteTdu.log.1- SHUTDOWN command was generated by Stone failed in goToSleep, semaphore failed.
> ViaSiteTdu.log.1-Shared memory SemClear idx 102 failure: errno=22,EINVAL, Invalid argument (programmer error) for lock: noLock
> =============================
>
> Environment:
> GemStone 3.4.5
> 2GB shared cache
> 500MB temp obj space
> Ubuntu 18.04.5 LTS
>
> (Below are some more log files excerpts and informations)
> After searching online and the manuals I am pretty clueless. Some sort of semaphore problem, it seems.
> Any tiny clues?
> Cheers,
> Andreas
>
> -- -- -- -- -- -- -- --
> Andreas Brodbeck
> Softwaremacher
> www.mindclue.ch
> Threema ID: JTJWSSBN
>
> Brot? www.brotrezept.ch!
>
>
>
> Stone log:
> ========================================================================
> ViaSiteTdu.log.1---- 04/19/21 19:28:51.831 CEST ---
> ViaSiteTdu.log.1- Starting a SymbolCreation Gem process.
> ViaSiteTdu.log.1-
> ViaSiteTdu.log.1- Session 3 with processId 16505 is the Symbol Creation Gem.
> ViaSiteTdu.log.1-
> ViaSiteTdu.log.1- Session 4 in processId 16501 is the Master Reclaim session
> ViaSiteTdu.log.1-
> ViaSiteTdu.log.1- Session 2 with processId 16503 is the AdminGem.
> ViaSiteTdu.log.1- First login used IcuLibraryVersion version 51.2
> ViaSiteTdu.log.1-ERROR:Semaphore failure errno 43 (stnSemIdx = 102)
> ViaSiteTdu.log.1:--- 04/19/21 22:33:17.502 CEST ---
> ViaSiteTdu.log.1- SHUTDOWN command was generated by Stone failed in goToSleep, semaphore failed.
> ViaSiteTdu.log.1-Shared memory SemClear idx 102 failure: errno=22,EINVAL, Invalid argument (programmer error) for lock: noLock
> ViaSiteTdu.log.1-
> ViaSiteTdu.log.1-HostCallDebugger: invoked at: Mon Apr 19 22:33:18 CEST 2021
> ViaSiteTdu.log.1-
> ViaSiteTdu.log.1-UTL_GUARANTEE failed, File /kufi2/users/buildgss/34/build47617/src/shrpcclient.c line 645
> ViaSiteTdu.log.1-
> ViaSiteTdu.log.1-Begin attempt to print C-level stack for process 16472 at: Mon Apr 19 22:33:18 CEST 2021
> ViaSiteTdu.log.1---- 04/19/21 22:33:18.508 CEST ---
> ViaSiteTdu.log.1- Starting checkpoint for clean shutdown.
> ========================================================================
>
> reclaim gc gem log:
> ========================================================================
> --- 04/19/21 22:31:10.677 CEST Changing to reclaimAll configuration
> --- 04/19/21 22:31:10.694 CEST Restoring previous configuration
> --- 04/19/21 22:33:17.514 CEST Logging out
> Shared memory SemClear idx 102 failure: errno=22,EINVAL, Invalid argument (programmer error) for lock: noLock
> HostCallDebugger: invoked at: Mon Apr 19 22:33:17 CEST 2021
> UTL_GUARANTEE failed, File /kufi2/users/buildgss/34/build47617/src/shrpcclient.c line 645
> Begin attempt to print C-level stack for process 16501 at: Mon Apr 19 22:33:17 CEST 2021
> gdb is /usr/bin/gdb
> ===--- start gdb stacks using /opt/GsDevKit_home/server/stones/ViaSiteTdu/product/bin/pstack.gdb
> ========================================================================
>
>
>
> All gems then forcibly terminate:
> ========================================================================
> seaside8084_server-8084.log.1:--- 04/19/21 22:33:17.815 CEST Logging out
> seaside8084_server-8084.log.1------------------------------------------------------
> seaside8084_server-8084.log.1-GemStone: Error Fatal
> seaside8084_server-8084.log.1-Your session has been forcibly terminated, , stone shutting down
> seaside8084_server-8084.log.1-Error Category: 231169 [GemStone] Number: 4059 Arg Count: 1 Context : 20 exception : 20
> ========================================================================
>
>
> ================================================
> Linux: ipcs -l
>
> ------ Messages Limits --------
> max queues system wide = 32000
> max size of message (bytes) = 8192
> default max size of queue (bytes) = 16384
>
> ------ Shared Memory Limits --------
> max number of segments = 4096
> max seg size (kbytes) = 2621440
> max total shared memory (kbytes) = 18014398509481980
> min seg size (bytes) = 1
>
> ------ Semaphore Limits --------
> max number of arrays = 32000
> max semaphores per array = 32000
> max semaphores system wide = 1024000000
> max ops per semop call = 500
> semaphore max value = 32767
> ================================================
>
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> Glass at lists.gemtalksystems.com
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>

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