Thank you very much! Probably you are right. Our users use shared IMAP
folders and sometimes they keep ten thousands of messages in one
folder. I have increased dirhash_maxmem to 64MB and see what happens.
Unfortunately, I cannot play with the hardware because it is in a
server park, and it must be up 99.99% on workdays.
I hope dirhash will solve the problem. I'm setting this to [SOLVED]
and come back if it happens again. (Maybe on monday?)
By the way, there is nothing in /etc/periodic that would execute "find
/ -sx". Can somebody explain what is this for, and why it was started
by root? Is it being used instead for enumerating files in a
directory, when dir hash is full?
I'm starting to believe that this was the problem. Within an hour, I see
this:
shopzeus# sysctl vfs.ufs
vfs.ufs.dirhash_docheck: 0
vfs.ufs.dirhash_mem: 33708867
vfs.ufs.dirhash_maxmem: 134217728
vfs.ufs.dirhash_minsize: 2560
Went up to 32MB!
L
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