Re: Unexpected crash

[Quanah Gibson-Mount <quanah@zimbra.com>]

--On Thursday, May 22, 2008 12:54 PM -0400 Francis Swasey 
<Frank.Swasey@uvm.edu> wrote:

> On 5/22/08 12:12 PM, Quanah Gibson-Mount wrote:
> > --On Thursday, May 22, 2008 10:07 AM -0400 Francis Swasey
> > <Frank.Swasey@uvm.edu> wrote:
> >
> >
> > > I'm wondering the following things:
> > >
> > > 1) Is it possible that one of the ITS's for syncrepl that will be
> > > included in 2.3.42 would address this crash?  Any suggestions on
> > > tracking down why it crashed?
> >
> > You may have hit the accesslog callbacks bug (ITS#5490).
>
> Looks likely.  Then, I need to research why I didn't get a core file
> (likely a ulimit problem)
>
> > > 2) Does it appear that I have a configuration problem (the
> > > delta-syncrepl taking about five times as long to get the changes out
> > > to the replicas as it took to apply them on the master)?  Where would
> > > you suggest I look if it is likely?
> >
> >
> > Have you set up a DB_CONFIG file for your accesslog DB that's reasonable?
>
> I think it's reasonable ;-)  I have two DB's and 4GB of memory on this
> system.  The DB_CONFIG for the accesslog DB is as follows:
>
> set_cachesize 0 524288000 2
> set_lg_bsize 2097152
> set_lg_regionmax 262144
>
> Have I missed something that would be more reasonable?

I don't know without knowing the size of your accesslog db. ;)

Personally I avoid splitting memory regions if possible, but that may only 
apply to BDB 4.2.52, I've never tested that aspect of configuration with 
anything more recent.

--Quanah

--

Quanah Gibson-Mount
Principal Software Engineer
Zimbra, Inc
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