Hi Jon,
> Significant performance increases will be seen using the ReiserFS for > Queues dirs due to the small random file counts. You can find all kinds of > info on ReiserFS on the IBM site. The other thing you would really want to > investigate is Sendmail 8.12. Yes, Yes, not just another "go to the new > rev" 8.10 actually performs better in some cases, 8.12 has this > performance plus advantages in the allocation of processes and queue > definition. I do know that SuSE builds of 8.12 are available, have not > checked right away on zSeries. You can always use source. > > We have also seen large performance gains on 2.4.18, especially with the > SuSE patch from Andrea (VM33). > Up to now I thought that every filesystem with journaling lowers disk performance ? The journaling function produces additional CPU load and i/o's. So I'm suprised that ReiserFS should be faster than ext2. Let's see if I find time to try it out. I just read the list of new features from sendmail 8.12. Seems that for our purpose - a smtp-relay that is mx-backup for several domains - upgrading to 8.12.3 could result in much better performance. I think it's worth building it on the zSeries. Thanks, Robert.
