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<TITLE> [Mono-bugs] [Bug 476081] New: Too many mod_mono instances running and mod-mono server stops responding
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<H1>[Mono-bugs] [Bug 476081] New: Too many mod_mono instances running and mod-mono server stops responding</H1>
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<B>bugzilla_noreply at novell.com</B>
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<A HREF="mailto:mono-bugs%40lists.ximian.com?Subject=%5BMono-bugs%5D%20%5BBug%20476081%5D%20New%3A%20Too%20many%20mod_mono%20instances%20running%0A%20and%20mod-mono%20server%20stops%20responding&In-Reply-To="
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TITLE="[Mono-bugs] [Bug 476081] New: Too many mod_mono instances running and mod-mono server stops responding">bugzilla_noreply at novell.com
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</A><BR>
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<I>Mon Feb 16 04:05:41 EST 2009</I>
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<PRE><A HREF="https://bugzilla.novell.com/show_bug.cgi?id=476081">https://bugzilla.novell.com/show_bug.cgi?id=476081</A>
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Summary: Too many mod_mono instances running and mod-mono
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server stops responding
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Classification: Mono
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Product: Mono: Runtime
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Version: 2.2.x
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Platform: Other
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OS/Version: SLES 10
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Status: NEW
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Severity: Critical
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Priority: P5 - None
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Component: misc
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AssignedTo: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at lists.ximian.com</A>
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ReportedBy: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">kuanil at novell.com</A>
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QAContact: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at lists.ximian.com</A>
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CC: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">bkalidas at novell.com</A>, <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">rarul at novell.com</A>,
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<A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">vvaradhan at novell.com</A>, <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">vprabudas at novell.com</A>,
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<A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">amahabaleshwar at novell.com</A>, <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">sbindu at novell.com</A>
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Found By: ---
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After discussion with Mono team for bug id 440486, iFolder code was modified so
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that it is supported to run with Mono2.x runtime. Currently we are
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running/testing iFolder with Mono2.2 runtime tree (This tree is a directory
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structure with all mono runtime libraries inside iFolder) as it was decided
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alongwith Mono team. When iFolder server is accessed through mod-mono with very
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requests coming in one by one, everything works fine. But once many clients
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connect and server also starts using mod-mono frequently, suddenly it is seen
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that there are many instances of mod-mono running and server stops responding.
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Once this happens, then every minute many instances of mod-mono comes up and
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get added. Server becomes non-responsive. This can be reproduced within15-30
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minutes. Our ST person, when tries to connect around 15 clients, this happens
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in first time itself.
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I read <A HREF="http://www.mono-project.com/Mod_mono#Advanced_options">http://www.mono-project.com/Mod_mono#Advanced_options</A>
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and tried putting "MonoAutoRestartTime simias10 00:00:120 " into our conf file
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for a restart at every 2 minutes, but this is not working at all. No restart of
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mod-mono happens.
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I also used :
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<Location /mono>
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SetHandler mono-ctrl
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Order deny,allow
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Deny from all
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Allow from 127.0.0.1
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</Location>
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to check the mod-mono server, but no of requests currently being processed does
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not cross 3 (or may be when i am checking this no has reduced ...not sure).
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i am writing here a part of the result of "pe -ef | grep mono" :
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wwwrun 32538 1 0 13:11 ? 00:00:00
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/opt/novell/ifolder3/bin/../lib/Mono/usr/bin/mono
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/opt/novell/ifolder3/bin/../lib/Mono/usr/lib/mono/2.0/mod-mono-server2.exe
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--filename /tmp/mod_mono_server_simias10 --applications
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/simias10:/opt/novell/ifolder3/lib/simias/web --nonstop
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wwwrun 32554 1 0 13:11 ? 00:00:00
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/opt/novell/ifolder3/bin/../lib/Mono/usr/bin/mono
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/opt/novell/ifolder3/bin/../lib/Mono/usr/lib/mono/2.0/mod-mono-server2.exe
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--filename /tmp/mod_mono_server_simias10 --applications
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/simias10:/opt/novell/ifolder3/lib/simias/web --nonstop
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wwwrun 32563 1 0 13:12 ? 00:00:00
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/opt/novell/ifolder3/bin/../lib/Mono/usr/bin/mono
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/opt/novell/ifolder3/bin/../lib/Mono/usr/lib/mono/2.0/mod-mono-server2.exe
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--filename /tmp/mod_mono_server_simias10 --applications
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/simias10:/opt/novell/ifolder3/lib/simias/web --nonstop
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and so-on...........
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For you reference, i am writing the conf file used by iFolder and which
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reproduces this issue :
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Include /opt/novell/ifolder3/lib/Mono/bin/mod_mono.conf
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Alias /simias10 "/opt/novell/ifolder3/lib/simias/web"
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AddMonoApplications simias10 "/simias10:/opt/novell/ifolder3/lib/simias/web"
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MonoSetEnv simias10
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"SimiasRunAsServer=true;SimiasDataDir=/var/simias/data/simias"
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MonoServerPath simias10 /opt/novell/ifolder3/lib/Mono/bin/mod-mono-server2
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<Location /simias10 >
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MonoSetServerAlias simias10
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Order allow,deny
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Allow from all
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SetHandler mono
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</Location>
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even if i do apache2 restart/reload or pkill mono, it does not kill mono..
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after sending SIGKILL to mono process, it kills mono. But these manual
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workarounds won't be acceptable by customers.Also iFolder will have big
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deployments where restarting server every now and then won't be acceptable
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scenario. So we would like to have a fix.
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--
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Configure bugmail: <A HREF="https://bugzilla.novell.com/userprefs.cgi?tab=email">https://bugzilla.novell.com/userprefs.cgi?tab=email</A>
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------- You are receiving this mail because: -------
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You are the QA contact for the bug.
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You are the assignee for the bug.
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</PRE>
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<!--endarticle-->
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<LI>Previous message: <A HREF="086094.html">[Mono-bugs] [Bug 464229] XmlReader.ReadElementContentAsBase64() hangs indefinitely and uses 100% CPU on the last read
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</A></li>
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<LI>Next message: <A HREF="086096.html">[Mono-bugs] [Bug 476081] Too many mod_mono instances running and mod-mono server stops responding
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</A></li>
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