fsync() takes about 0.06 second ---makes Cyrus deliver slow

[Luc Brouard]

On Tue, Sep 10, 2002 at 11:31:30AM -0400, Su Li wrote:
> Thanks Daniel,
> 
> I think performance is the bigger issue for me. I need to get 8-10 messages
> per second and right now I only got 1.2-1.5 messages per second. I will
> definitely give a try. In the mean time I also looking into my configure to
> see if I can get any better there.
> 
> I have posted my configure before. I choose db3_nosync to be my
> duplicate.db. Can you help me to see, if I can improve performance there? I
> post again here. Sorry for that.
> 
> ./configure --with-auth=unix --without-krb4 --without-ucdsnmp
> --with-bdb-incdir=/usr/local/BerkeleyDB.4.0/include
> --with-bdb-libdir=/usr/local/BerkeleyDB.4.0/lib --with-dblib=berkeley
> --with-dbpath=/usr/local/BerkeleyDB.4.0 --with-lock=fcntl
> --with-mboxlist-db=skiplist --with-seen-db=skiplist
> --with-duplicate-db=db3_nosync --without-notify --disable-sieve
> --enable-fulldirhash --with-idle=no
> 
> Thanks a lot.
> 
Check postfix archives, during the summer there was talk about it (ext3)
and tuning it.
I don"t remember exactly what were the results (one of the thing IIRC
was to have the journal to be up to 128MB)

Luc