On Wed, 13 Sep 2000, Petr Novotny wrote:
1. What's that? qmail's queue can be mounted noatime? Huh!
Please try "grep atime /usr/src/qmail/qmail-1.03/*c" and then
withdraw your claims. atime is used to identify ossified files in the
queue.
If you look closely at the source you'll see that ossified files are
still detected with noatime turned on. The atime value is set to
the creation time in this case. The only undesired effect of using
noatime is that a file may be falsely identified as ossified in the
rare case that reception of the file takes longer than 36 hours.
Same goes for files in a maildir's tmp directory.
The performance win from noatime can be significant. I have run a
large service for many years (since qmail-0.72) with the queue
and message store mounted noatime with no harmful effects.
-- Jeff Hayward
