Subject: Re: safety of UFS_DIRHASH
To: None <>
From: Perry E. Metzger <>
List: tech-kern
Date: 02/16/2007 17:19:30
"Stephen M. Rumble" <> writes:
> Quoting Blair Sadewitz <>:
>> I enabled UFS_DIRHASH on a hunch it would help LFS (wow, what a
>> difference for pkgsrc builds).
>> I have not seen any crashes yet, but I don't think it's been long
>> enough to tell.
> The crashes that Thor saw were on heavily loaded multiprocessor(?)
> systems. I had been using UFS_DIRHASH on my machines for at least a
> year and a half without seeing any problems. Let's just say that,
> without somebody familiar in that area proclaiming pool(9)'s safe
> usage in that code, I would not recommend that people start using it
> again if they're concerned with absolute stability.

I had trouble with UFS_DIRHASH on a quite ordinary uniprocessor

Perry E. Metzger