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Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org
Subject: Re: ZFS deadlock
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Johan Ström wrote:
> On Apr 8, 2008, at 9:40 AM, LI Xin wrote:
>
>> For your question: just reboot would be fine, you may want to tune 
>> your arc size (to be smaller) and kmem space (to be larger), which 
>> would reduce the chance that this would happen, or eliminate it, 
>> depending on your workload.
>
> Back online now, with kmem/kmem_max to 1G and arcsize to 512M. Are 
> those reasonable on a 2G machine? I think I've read that from 
> somewhere, but cannot find that (arc at least) in the TuningGuide now.
>

Depending on  your work load you are just buying more time, so 
"reasonable" is a matter of perspective. :(  I didn't see if you said 
you are on 32bit or 64bit? Keep in mind the kmem max is 1.5-2G on amd64 
regardless of how much memory you have. If 512M arcsize crashes too soon 
for your tastes you can always lower it down to 256M, or 128M, etc.