HEADS UP: New ZFS in the tree.

[Nikolay Denev]

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On 19 Nov, 2008, at 13:58 , Nikolay Denev wrote:

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> On 19 Nov, 2008, at 11:48 , Nikolay Denev wrote:
>>
>> Well, it looks like that on -current and a 4G amd64 machine  
>> probably there is no need
>> to tune anything. Here are my defaults with everything vm and zfs  
>> related in loader.conf commented :
>>
>> vm.kmem_size_max: 4509713203
>> vfs.zfs.arc_max: 863907840
>>
>
> I was able to panic it again with "kmem_map too small" with these  
> settings (defaults).
>
> This are the bonnie++ arguments that i've used:
> bonnie++  -d /tank -c 4 -r 4096 -x 9999999 -u 0:0
>
>

With vfs.zfs.arc_max="512M" and nothing else the machine survived more  
than 20 hours of
bonnie++ and "iozone -a" in parallel, and is still working.

Definitely the stability has improved with the new version.

But maybe the algorithm for automatically setting arc_max needs a  
little more tweaking? (if it's not hardcoded?)

- --
Regards,
Nikolay Denev




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