[SOLVED] Re: 7.1 hangs, shutdown terminated

[Laszlo Nagy]

>>   
> 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