Re: Delta-syncrepl and latency

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

--On May 9, 2007 2:51:23 PM -0400 Sam Tran <stlist@gmail.com> wrote:

> On 5/9/07, Quanah Gibson-Mount <quanah@zimbra.com> wrote:
> > --On May 9, 2007 12:46:18 PM -0400 Sam Tran <stlist@gmail.com> wrote:
> >
> > > On 5/8/07, Quanah Gibson-Mount <quanah@zimbra.com> wrote:
> > > [snip]
> > >>
> > >> How have you tuned DB_CONFIG for the accesslog backend?
> > >>
> > >> --Quanah
> > >>
> > >
> > > Here is my DB_CONFIG for the accesslog backend:
> > >
> > > set_cachesize   0       52428800        0
> > > set_lg_regionmax        1048576
> > > set_lg_max              10485760
> > > set_lg_bsize            2097152
> > > set_lg_dir              /var/log/openldap_bdb/accesslog
> > > set_tmp_dir             /tmp
> >
> > Have you looked at the output of db_stat -m to see how things are
> > behaving?
>
> I ran 1,000 sequential writes on the provider. Then run the command
> you specified. Here is the output:
>
> According to the output most of the data is in cache.
> It took about 5 minutes for the consumer to get the updates.
> I still don't know why.

Well, things seem fine from the accesslog DB side.  On my servers @ 
Stanford, the largest latency I've seen is about 7 seconds.  I wonder if 
something is slow on your network.

--Quanah

--
Quanah Gibson-Mount
Principal Software Engineer
Zimbra, Inc
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