[Opensim-users] Ubuntu and magic mini-trampolines (crash problem)

[John Hopkin]

To be more accurate, with 7 regions up, it's using just around 1GB out
of the 2GB of memory, same as 2.1 was.  That's with only a couple of
users, though, which is all I need.  I'll keep an eye on that, and see
what memory it's been using in the case of another crash.

One thing worth noting is that CPU usage is a *lot* lower under 2.2,
including when the server's just ticking over with no users.

Just observations - thanks to all for your input on this.

 John

Mic Bowman wrote:

>GC may also be a problem. Though my experience with 2.4 at least is
>that memory utilization is very good and in this case we have... "more
>than enough" memory. :-)
>
>Also... the consistency with which the problem occurs in log4net
>methods called from within an executing script suggests that its not
>just garbage collection. I'm not sufficiently mono-smart to root cause
>this... so I'm looking for bandaids (which in this case amounts to
>commenting out log4net calls in the call stack that caused the
>problem) that work consistently. If someone with mono-smarts would
>like to suggest some other ways to get data on this, I'm more than
>willing to try something different.
>
>--mic
>
>On Thu, Apr 23, 2009 at 6:09 AM, BlueWall Slade
><bluewall.slade at gmail.com> wrote:
>> I tested the 2.2/2.4 waters and regressed back to 2.0.1 . But, I did find
>> that the 2.2/2.4 works much better if you can keep some headroom in RAM.
>> Things seem to take a turn for the worse when you start swapping. Maybe the
>> GC has a hard time dealing with cached pages?
>>
>> Thanks!
>> BlueWall
>>
>> On Thu, Apr 23, 2009 at 8:53 AM, John Hopkin <opensim at jfhopkin.karoo.co.uk>
>> wrote:
>>>
>>> Dr Scofield wrote:
>>>
>>> >John Hopkin wrote:
>>> >> I've just upgraded Mono from 2.1 to 2.2 under Ubuntu Hardy, using Dr
>>> >> Scofield's script from here:
>>> >>
>>> >> http://xyzzyxyzzy.net/2009/02/17/updated-mono-build-script-mono-22/
>>> >
>>> >i've found that 2.2 has major problems and have since gone back to 2.0.1.
>>> >
>>> >i'll add a comment to the blog, sorry about not doing it earlier.
>>>
>>> I'd really, really like to stay on 2.2 if possible - under 2.1, the
>>> setup had recently become so slow and temperamental it was practically
>>> unusable, which is why I tried the upgrade.  With 2.2, this problem
>>> aside, there've been none of the performance issues, and generally
>>> it's a *lot* smoother than it has been for months.
>>> --
>>> John Hopkin
>>>
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>>
>>
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-- 
John Hopkin