> On Fri, Aug 06, 1999, Jim Arnott <[EMAIL PROTECTED]> wrote:
> >
> > Thanks for all your help and pointers. Looks like its the disk bandwith.
When I
> > take out the fsync's in qmail-queue it drops down to 24 seconds (41.6/sec).
> >
> > SUMMARY:
> >
> > Could only inject a 1000 byte file into the queue at a rate of 13.6/sec.
> > On a ~433 Alpha with Digital UNIX 4.0.
> >
> > CONCLUSION:
> >
> > The queue is very disk intensive and all writes are fsync'ed.
> >
> > Things to try:
> >
> > (thanks to David Dyer-Bennet,Daemeon Reiydelle, [EMAIL PROTECTED],
> > [EMAIL PROTECTED])
> >
> > Remove the fsync call in qmail-queue.c
> > Use a battery backed ram drive.
> > Send directly before queing and queue those that fail (does qmail
> > support this)
> > Performance tune the system
> > SCSI controller with write-back cache
> > Run qmail-queue directly (qmail-queue does the fsync's though)
>
> This still seems VERY slow, esp for Digital Unix. Which patch version of
> Digital Unix are you using? What kind of partition are you writing to?
> AdvFS or UFS?
>
> JE
>
# uname -a
OSF1 uws001.vms.bridge.com V4.0 878 alpha
/var/qmail is on the usr_domain#usr partition and its AdvFS.
-jim
