[Building Sakai] Memory leak in Courier Service

[Earle Nietzel]

Hi Chris

I would reopen it and attach the patch.


On Mon, Sep 23, 2013 at 10:29 AM, Maurer, Christopher Wayne <chmaurer at iu.edu
> wrote:

>  I'm working on a fix that we should be able to contribute back once we
> get it through some testing.  Should I reopen SAK-21398 and attach a patch
> or would it be more appropriate to open a new one?
>
>  Chris
>
>   From: <Maurer>, Christopher Maurer <chmaurer at iu.edu>
> Date: Friday, September 20, 2013 11:36 AM
> To: Matthew Jones <matthew at longsight.com>, Beth Kirschner <
> bkirschn at umich.edu>
> Cc: dev sakai <sakai-dev at collab.sakaiproject.org>
>
> Subject: Re: [Building Sakai] Memory leak in Courier Service
>
>   We restart weekly on Sunday mornings around 6am.  But Sunday evening is
> some of our heaviest load, so by around 8pm, memory is about at capacity
> and GC starts thrashing essentially causing the servers to die a slow
> horrible death!
> So restarts don't really help us in this situation.  And if it can build
> up in a little over 12 hours, that doesn't seem like a slow leak.  Though,
> we are running lots of sessions when we hit peak load!
>
>  Chris
>
>   From: Matthew Jones <matthew at longsight.com>
> Date: Friday, September 20, 2013 11:12 AM
> To: Beth Kirschner <bkirschn at umich.edu>
> Cc: Christopher Maurer <chmaurer at iu.edu>, dev sakai <
> sakai-dev at collab.sakaiproject.org>
> Subject: Re: [Building Sakai] Memory leak in Courier Service
>
>   Chat (new or old) still uses it, new presence was the one that got
> switched from using it.
>
>  It's still an issue but wasn't a huge/fast leak and basically just meant
> the best practice was weekly restarts for highly active instances.
>
>
> On Fri, Sep 20, 2013 at 11:07 AM, Beth Kirschner <bkirschn at umich.edu>wrote:
>
>> We're still using the old chat, though I thought that the Courier Service
>> was deprecated and so not used by the old chat?
>>
>> - Beth
>>
>> On Sep 20, 2013, at 10:00 AM, "Maurer, Christopher Wayne" <
>> chmaurer at iu.edu> wrote:
>>
>> > https://jira.sakaiproject.org/browse/SAK-21398
>> >
>> > We believe we've been running into this old-ish issue lately.  We
>> upgraded to 2.9.0 back in May but didn't notice issues until load really
>> picked up at the beginning of the fall semester a couple weeks ago.  Are
>> other 2.9 people still running the "old" style chat or has everyone
>> switched over to the "neo" chat (I've been out of the sakai game for pretty
>> much the whole year…is it still called that?)  Trying to determine if the
>> best course of action is to try and get the old one working better, or
>> switch to the new.  Thoughts?
>> >
>> > Chris
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>
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