[Opensim-dev] OpenSim crashing why?

Tue May 4 10:36:02 UTC 2010

Hi

It seems that one particular remote client is causing OpenSim to open
new connections over and over again.

Is it possible a firewall setting on the client could be causing the
number of open connections to spiral out of control?

Anyone else have experience of this?

Thanks very much

Clive

> ------------------------------
>
> Message: 4
> Date: Tue, 4 May 2010 08:56:37 +0100
> From: Clive Gould <cliveg at gmail.com>
> To: opensim-users at lists.berlios.de
> Cc: tedd at konge.net
> Subject: Re: [Opensim-users] OpenSim crashing why?
> Message-ID:
>        <h2h62a72a691005040056z1951e9b3ra4917cfac0e8e271 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi
>
> The Linux command that finally did the trick was:
>
> netstat -anput
>
> Hi
>
> This showed that OpenSim was maintaining over 900 connections to the
> remote IP 94.169.170.24
>
> [opensim at vleinternal ~]$ host 94.169.170.24
> 24.170.169.94.in-addr.arpa domain name pointer
> cpc3-croy18-2-0-cust535.croy.cable.virginmedia.com.
>
> By restarting OpenSim and blocking 94.169.170.24 in /etc/hosts.deny
> these connections, which I suspect were crashing the simulator
> periodically, have gone away.
>
> Does anyone know what could cause all these open connections???
>
> Thanks for all the help and advice
>
> Clive
>
>
>
>
> On Mon, May 3, 2010 at 8:25 PM,  <opensim-users-request at lists.berlios.de> wrote:
>> Send Opensim-users mailing list submissions to
>> ? ? ? ?opensim-users at lists.berlios.de
>> ------------------------------
>>
>> Message: 4
>> Date: Mon, 3 May 2010 21:25:34 +0200
>> From: "Tedd Hansen" <tedd at konge.net>
>> To: <opensim-users at lists.berlios.de>
>> Subject: Re: [Opensim-users] OpenSim crashing why?
>> Message-ID: <004901caeaf6$691ea1b0$3b5be510$@net>
>> Content-Type: text/plain; ? ? ? charset="us-ascii"
>>
>> Hi
>>
>> netstat command will do that for you.
>> Linux: netstat -nlap | less
>> Windows: netstat -anb | more
>>
>> debian5:~# netstat -nlap | grep tcp | grep :8002
>> tcp ? ? ? ?0 ? ? ?0 0.0.0.0:8002 ? ? ? ? ? ?0.0.0.0:* ? ? ? ? ? ? ? LISTEN
>> 13841/mono
>>
>> Br,
>> ?Tedd
>>
>> -----Original Message-----
>> From: opensim-users-bounces at lists.berlios.de
>> [mailto:opensim-users-bounces at lists.berlios.de] On Behalf Of Clive Gould
>> Sent: 3. mai 2010 21:22
>> To: opensim-users at lists.berlios.de
>> Subject: Re: [Opensim-users] OpenSim crashing why?
>>
>> Hi
>>
>> Justin wrote: "By the look of it, something in OpenSim is failing to
>> close connections. ?After 24 hours, the HttpServer embedded in OpenSim
>> eventually finds that it runs out of sockets to play with."
>>
>> OpenSim is still crashing periodically.
>>
>> Any idea how I can find out how many connections the HTTP Server
>> embedded in OpenSim thinks it has open at any one time?
>>
>> Is there a command from the Linux command line that will show this?
>> (I've tried ps and netstat without success)
>>
>> Thanks very much
>>
>> Clive
>>
>>
>>> Message: 2
>>> Date: Thu, 29 Apr 2010 23:38:49 +0100
>>> From: Justin Clark-Casey <jjustincc at googlemail.com>
>>> Cc: opensim-users at lists.berlios.de
>>> Subject: Re: [Opensim-users] OpenSim crashing why?
>>> Message-ID: <4BDA0A79.5020105 at googlemail.com>
>>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>>
>>> Clive Gould wrote:
>>>> Hi
>>>>
>>>> We're successfully using OpenSim for student project work at Bromley
>> College.
>>>>
>>>> OpenSim 0.6.8 standalone has just started crashing on us every 24 hours
>> or so.
>>>>
>>>> Logins are disabled and the OpenSim.log file fills up the CentOS home
>>>> partition very quickly with error messages.
>>>>
>>>> Killing all processes owned by the opensim user, deleting the
>>>> OpenSim.log file, restarting the vnc session and the opensim
>>>> application cures the problem, until the next time.
>>>>
>>>> I append relevent excerpts from the error log to this message.
>>>>
>>>> Does anyone have any idea what may be causing this??
>>>
>>> By the look of it, something in OpenSim is failing to close connections.
>> After 24 hours, the HttpServer embedded in OpenSim eventually finds that it
>> runs out of sockets to play with.
>>>
>>> I'm surprised to see this in standalone mode. ?Are you doing something
>> with OpenSim in standalone mode that requires outbound connections (e.g.
>> remote database, groups, etc.), or perhaps a script that regularly
>> establishes an outbound connection?
>>>
>>> If this has just started crashing after being fine before then it suggests
>> that something has changed locally to reveal a bug in OpenSim.
>>>
>>> -- Justin
>>>
>>>>
>>>> Thanks
>>>>
>>>> Clive
>>>>
>>>> 2010-04-29 16:55:47,776 DEBUG - OpenSim.Region.Framework.Scenes.Scene
>>>> [Scene] Adding new agent India Airie to scene Rookery_NW
>>>> 2010-04-29 16:55:47,777 DEBUG - OpenSim.Region.Framework.Scenes.Scene
>>>> [APPEARANCE]: Appearance not found in Rookery_NW, returning default
>>>>
>>>> 2010-04-29 16:55:55,132 DEBUG -
>>>> OpenSim.Region.Framework.Scenes.SceneObjectGroup [SCENE]: Storing
>>>> Primitive, 204f5d0d-a994-4d61-8fb1-4b8d3af433fd in Rookery_
>>>> SW
>>>> 2010-04-29 16:56:14,262 DEBUG -
>>>> OpenSim.Region.Framework.Scenes.SceneObjectGroup [SCENE]: Storing
>>>> Primitive, 9b4c39ad-eebe-4417-9fd9-12a3994f17bc in Rookery_
>>>> SW
>>>> 2010-04-29 16:57:30,449 DEBUG -
>>>> OpenSim.Region.Framework.Scenes.SceneObjectGroup [SCENE]: Storing
>>>> Primitive, 88551bb8-3fa2-4bd9-a2fb-78c74bf45f55 in Rookery_
>>>> SW
>>>>
>>>> 2010-04-29 17:16:15,070 DEBUG -
>>>> OpenSim.Region.Framework.Scenes.SceneObjectGroup [SCENE]: Storing
>>>> Primitive, 9b4c39ad-eebe-4417-9fd9-12a3994f17bc in Rookery SW
>>>>
>>>> 2010-04-29 17:17:11,209 ERROR -
>>>> OpenSim.Framework.Servers.HttpServer.BaseHttpServer [BASE HTTP
>>>> SERVER]: HttpServer.HttpListener had an exception
>>>> System.Net.Sockets.SocketException: Too many open files
>>>> ? at System.Net.Sockets.Socket.Accept () [0x00000]
>>>> ? at System.Net.Sockets.Socket+Worker.Accept () [0x00000]
>>>> 2010-04-29 17:17:11,255 ERROR -
>>>> OpenSim.Framework.Servers.HttpServer.BaseHttpServer [BASE HTTP
>>>> SERVER]: HttpServer.HttpListener had an exception
>>>> System.Net.Sockets.SocketException: Too many open files
>>>> ? at System.Net.Sockets.Socket.Accept () [0x00000]
>>>> ? at System.Net.Sockets.Socket+Worker.Accept () [0x00000]
>>>> 2010-04-29 17:17:11,273 ERROR -
>>>> OpenSim.Framework.Servers.HttpServer.BaseHttpServer [BASE HTTP
>>>> SERVER]: HttpServer.HttpListener had an exception
>>>> System.Net.Sockets.SocketException: Too many open files
>>>> ? at System.Net.Sockets.Socket.Accept () [0x00000]
>>>> ? at System.Net.Sockets.Socket+Worker.Accept () [0x00000]
>>>> ockets.SocketException: Too many open files
>>>> ? at System.Net.Sockets.Socket.Accept () [0x00000]
>>>> ? at System.Net.Sockets.Socket+Worker.Accept () [0x00000]
>>>>
>>>
>>>
>>> --
>>> Justin Clark-Casey (justincc)
>>> http://justincc.org
>>> http://twitter.com/justincc
>
>
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