On Wed, 3 Apr 2002, Joel Laing wrote to Daniel Senie: > I think the biggest improvement you can make is to put the temp-drop-dir > on a separate drive. This will help lessen the I/O bottleneck. Also, use > fast drives. If possible, stripe multiple drives for performance on both > the spool file system, and the tmp-drop-dir file system. Mind you, I've > not really played with the 4.x possibilities, but the above greatly > improved performance for my 3.x setup.
Agreed. Mail system performance is more an issue of efficient disk I/O than of processing power. Even with 4.x you can fine tune Qpopper all you want, but if you have an I/O bottleneck Qpopper will still perform poorly. On my Solaris mail machine (9500 users) I moved /var/mail (mailboxes), /var/spool (including Qpopper temp-drop-dir), and the rest of /var (most logging) to separate disks on separate disk controllers. This made a tremendous improvement in performance. It still doesn't address the problem of users with huge mailboxes. They will still slow everything down. -- Chip Old (Francis E. Old) E-Mail: [EMAIL PROTECTED] Manager, BCPL Network Services Phone: 410-887-6180 Manager, BCPL.NET Internet Services FAX: 410-887-2091 320 York Road Towson, MD 21204 USA
