Dear Gustav,
I believe you should also comment Jim's writing:
Anyway, as I could never really get Tcl cleanup to operate in a reliable way
and because it didn't really matter to Aolserver, the call to Tcl_Finalize
had been commented out for years. As this has become a recurring problem,
I'd suggest now it should be a config option, default off. In the
off-chance someone really needs Tcl_Finalize, they could set the option on.
All the best,
Maurizio
From: Gustaf Neumann [mailto:neum...@wu.ac.at]
Sent: 05 March 2012 11:29
To: aolserver-talk@lists.sourceforge.net
Subject: Re: [AOLSERVER] Problem with ns_shutdown
Dear Caroline,
We had a long discussion here in the list whether or not one should call
Tcl_Finalize() during cleanup. While i am not in favor of commenting
Tcl_Finalize() out on a unix-like os, i think that the possible harm of
doing so is limited. A crash during finalize can hint to a problem sitting
some else.
Concerning your crash-case: do you experience crashes on every ns_shutdown?
i would recommend to upgrade to tcl 8.5.11 if possible.
best regards
-gustaf neumann
On 02.03.12 05:49, Maurizio Martignano wrote:
Dear Caroline,
I use Aolserver on Windows Environments.
There the shutdown is always a problem if nsmain.c calls Tcl_Finalize.
To avoid any problem I had to comment out this call:
#ifndef _WIN32
Tcl_Finalize();
#endif
I believe that if you do the same, that is you comment out this call, you
may avoid all race conditions you are experiencing.
Please do notice that not calling Tcl_Finalize is not an issue, cause the
Aolserver process is anyhow about to die and the proper cleaning of all
allocated resources is performed by the operating system.
Hope it helps,
Maurizio
From: Porter, Caroline [mailto:cpor...@bna.com]
Sent: 01 March 2012 19:43
To: Victor Guerra
Cc: aolserver-talk@lists.sourceforge.net
Subject: Re: [AOLSERVER] Problem with ns_shutdown
tcl 8.5.9
Caroline
From: vgue...@gmail.com [mailto:vgue...@gmail.com] On Behalf Of Victor
Guerra
Sent: Thursday, March 01, 2012 10:36 AM
To: Porter, Caroline
Cc: aolserver-talk@lists.sourceforge.net
Subject: Re: [AOLSERVER] Problem with ns_shutdown
Which version of tcl are you running?
On Thu, Mar 1, 2012 at 3:08 PM, Porter, Caroline <cpor...@bna.com> wrote:
We are shutting down aolserver via the control port using the ns_shutdown
command. We are getting intermittent coredumps during the shutdown process.
Does anyone have any ideas as to how to resolve this?
Here's some more info.
webserver log:
[29/Feb/2012:08:20:02][30350.82082672][-nscp:1-] Notice: nscp: 127.0.0.1
connected
[29/Feb/2012:08:20:03][30350.82082672][-nscp:1-] Notice: nscp: nsadmin
logged in
[29/Feb/2012:08:20:04][30350.4151592640][-main-] Notice: nsmain:
AOLserver/4.5.1 stopping
[29/Feb/2012:08:20:04][30350.4151592640][-main-] Notice: driver: stopping:
nssock
[29/Feb/2012:08:20:04][30350.4151592640][-main-] Notice: sched: shutdown
pending
[29/Feb/2012:08:20:04][30350.131660656][-socks-] Notice: socks: shutdown
pending
[29/Feb/2012:08:20:04][30350.4141099888][-sched-] Notice: sched: shutdown
started
[29/Feb/2012:08:20:04][30350.4141099888][-sched-] Notice: sched: waiting for
event threads...
[29/Feb/2012:08:20:04][30350.131660656][-socks-] Notice: nscp: shutdown
[29/Feb/2012:08:20:04][30350.66386800][-sched:idle1-] Notice: exiting
[29/Feb/2012:08:20:04][30350.148007792][-sched:idle0-] Notice: exiting
[29/Feb/2012:08:20:04][30350.131660656][-socks-] Notice: socks: shutdown
complete
[29/Feb/2012:08:20:04][30350.56376176][-nssock:driver-] Notice: exiting
[29/Feb/2012:08:20:04][30350.4141099888][-sched-] Notice: sched: shutdown
complete
[29/Feb/2012:08:20:04][30350.4151592640][-main-] Notice: driver: stopped:
nssock
[29/Feb/2012:08:20:05][30350.82082672][-nscp:1-] Notice: nscp: 127.0.0.1
disconnected
[29/Feb/2012:08:20:05][30350.56376176][-shutdown-] Notice: Shutdown called
for server bwd
[29/Feb/2012:08:20:05][30350.56376176][-shutdown-] Notice: nslog: closing
'/data/bwd/logs/httpd_access_stg_delray.bna.com_5000.log'
[29/Feb/2012:08:20:05][30350.4151592640][-main-] Notice: nsmain:
AOLserver/4.5.1 exiting
called Tcl_FindHashEntry on deleted table
Here's what is in the coredump.
Program terminated with signal 6, Aborted.
#0 0x0071d430 in __kernel_vsyscall ()
#0 0x0071d430 in __kernel_vsyscall ()
#1 0x0036ab71 in raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#2 0x0036c44a in abort () at abort.c:92
#3 0x002e8ddf in Tcl_PanicVA () from /apps/bos-dev/bwd/lib/libtcl8.5.so
#4 0x002e8e04 in Tcl_Panic () from /apps/bos-dev/bwd/lib/libtcl8.5.so
#5 0x002bccea in BogusFind () from /apps/bos-dev/bwd/lib/libtcl8.5.so
#6 0x00304de1 in ThreadStorageGetHashTable () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#7 0x00304f0c in TclpThreadDataKeyGet () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#8 0x00303d28 in Tcl_GetThreadData () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#9 0x002e8545 in TclFreeObj () from /apps/bos-dev/bwd/lib/libtcl8.5.so
#10 0x0030f8b0 in FreeVarEntry () from /apps/bos-dev/bwd/lib/libtcl8.5.so
#11 0x002bc845 in Tcl_DeleteHashTable () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#12 0x0031052e in UnsetVarStruct () from /apps/bos-dev/bwd/lib/libtcl8.5.so
#13 0x0031080f in TclDeleteNamespaceVars () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#14 0x002dfda8 in TclTeardownNamespace () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#15 0x002e0045 in Tcl_DeleteNamespace () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#16 0x002dfeab in TclTeardownNamespace () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#17 0x002e0045 in Tcl_DeleteNamespace () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#18 0x002dfeab in TclTeardownNamespace () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#19 0x002647a7 in DeleteInterpProc () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#20 0x002f47a4 in Tcl_EventuallyFree () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#21 0x00264702 in Tcl_DeleteInterp () from
/apps/bos-dev/bwd/lib/libtcl8.5.so
#22 0x0014dd2f in Ns_TclDestroyInterp () from
/apps/bos-dev/bwd/lib/libnsd.so
#23 0x0014e508 in DeleteData () from /apps/bos-dev/bwd/lib/libnsd.so
#24 0x00ca6479 in NsCleanupTls () from /apps/bos-dev/bwd/lib/libnsthread.so
#25 0x00ca81e2 in FreeThread () from /apps/bos-dev/bwd/lib/libnsthread.so
#26 0x00174a8a in __nptl_deallocate_tsd (arg=0x4e47b70) at
pthread_create.c:154
#27 start_thread (arg=0x4e47b70) at pthread_create.c:308
#28 0x0041cc2e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133
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Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
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