dovecot, maildir, UFS 2 performance
wojtek at wojtek.tensor.gdynia.pl
Wed Sep 24 07:53:35 UTC 2008
>> i have everything (/) on single partition on most of my servers, including
>> those having lots of mail.
> I don't think that is clever. sysinstall creates different partitions for /
but i do. sysinstall and most people and manuals just copy "traditions".
> Except when my users search for a text in the "message body". Unfortunately,
> they often do this. :-(
ok right :)
>> assuming you configured your RAID1+0 properly it will give you MUCH more
>> performance from 10 disks, than RAID1 on 2 - a bit faster - drives.
>> IMHO you wasted money for SAS drives, simply having SATA only system could
>> be enough.
> This is true for raw read/write speed. But some I/O operations are seek
> intensive. Seek time for a 15 000 rpm SAS disk is lower than it is for a 10
> disk SATA2 RAID. Seek intensive operations should go to SAS. But I'm not sure
> what they are. If you say that dovecot is not seek intensive then you
> answered my question. :-)
with 5000 mails in one folder it will be seek intensive ;)
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