[Opensim-users] Intermittent crashing - System.OutofMemoryException

[Fleep Tuque]

Hi all,

After going through the log files and trying to figure out what changed in
the time period when the out of memory errors began, we traced it back to
an OAR file import. (Thanks to whoever suggested that might be an issue
earlier in this thread!)

I'd ported over a copy of the FleepGrid Plaza region so my students could
easily grab some of the freebies I'd created, and it looks like something
got horked during the import to the UCSIM grid:

012-02-07 09:12:05,991 ERROR -
Flotsam.RegionModules.AssetCache.FlotsamAssetCache [FLOTSAM ASSET CACHE]:
Failed to update cache for asset 3d0b3a52-40e5-48fe-8595-b72e163917fa.
 Exception The process cannot access the file
'c:\Opensim\bin\assetcache\3d0\3d0b3a52-40e5-48fe-8595-b72e163917fa'
because it is being used by another process.    at
System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess
access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize,
FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean
bFromProxy)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess
access, FileShare share, Int32 bufferSize)
   at System.IO.File.OpenFile(String path, FileAccess access,
SafeFileHandle& handle)
   at System.IO.File.SetLastAccessTimeUtc(String path, DateTime
lastAccessTimeUtc)
   at
Flotsam.RegionModules.AssetCache.FlotsamAssetCache.UpdateFileCache(String
key, AssetBase asset)

Shortly after that, we begin to see the first out of memory errors..

2012-02-07 09:15:17,453 DEBUG - OpenSim.Region.ScriptEngine.XEngine.XEngine
[XEngine] Loaded script LK-Stool-Sit #2.poseball-zero-lag, script UUID
e73e1114-297a-43a7-b4b8-dd423cd83b95, prim UUID
2ae59628-943d-49ec-9673-ee3465bd0242 @ <168.1464, 156.7953, 26.90887>.UCSIM
Staff 1
2012-02-07 09:15:17,984 ERROR - OpenSim.Region.ScriptEngine.XEngine.XEngine
[XEngine] Exception creating app domain:
 System.OutOfMemoryException: Exception of type
'System.OutOfMemoryException' was thrown.
   at System.AppDomain.nCreateDomain(String friendlyName, AppDomainSetup
setup, Evidence providedSecurityInfo, Evidence creatorsSecurityInfo, IntPtr
parentSecurityDescriptor)
   at System.AppDomain.CreateDomain(String friendlyName, Evidence
securityInfo, AppDomainSetup info)
   at OpenSim.Region.ScriptEngine.XEngine.XEngine.DoOnRezScript(Object[]
parms)

And we see those out of memory errors stack up until eventually the
application crashed..

When we realized it was probably the OAR file that was the source of the
issue, I wiped the region by importing a fresh "blank" OAR and we haven't
had the out of memory exception since.

Looks like the problem is resolved and super thanks again to everyone who
helped with pointers and info in this thread - much appreciated!

- Chris/Fleep


Chris M. Collins (SL/OS: Fleep Tuque)
Center for Simulations & Virtual Environments Research (UCSIM)
UCIT Instructional & Research Computing
University of Cincinnati
406A Zimmer Hall
315 College Drive
PO BOX 210088
Cincinnati, OH 45221-0088
chris.collins at uc.edu
(513) 556-3018

http://ucsim.uc.edu


On Thu, Feb 16, 2012 at 2:16 PM, R.Gunther <rigun at rigutech.nl> wrote:

> There's a 3e option. Munin.
> http://munin-monitoring.org/
>
>
> On 2012-02-16 16:49, BlueWall wrote:
>
>> The rrdtools is very good for storing and organizing the data for
>> statistics and it will also produce graphs from that data. It relies on
>> external scripts to collect the data - that's where Cacti comes in. It has
>> the scripts and templates to graph your system (and snmp devices) in the
>> distribution. I have done it on Linux and they claim to work on Windows too.
>>
>> You could also write scripts and templates to graph OpenSim. I haven't
>> tried that, though. There is documentation included in the distro, and
>> scattered across the Cacti user forums.
>>
>> -BlueWall
>>
>> On 02/16/2012 09:55 AM, Rick Anderson wrote:
>>
>>> One question about Cacti, and RDDTools. The sites describe them as
>>> general purpose graphing tools. Is there any documentation or tutorial
>>> for configuring them to monitor system status. Maybe, it's really
>>> simple, and I'm over complicating it.
>>>
>>> -_Rick
>>>
>>
> ______________________________**_________________
> Opensim-users mailing list
> Opensim-users at lists.berlios.de
> https://lists.berlios.de/**mailman/listinfo/opensim-users<https://lists.berlios.de/mailman/listinfo/opensim-users>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://opensimulator.org/pipermail/opensim-users/attachments/20120216/e98540f8/attachment.html>