zfs arc - just take it all and be good to me

[Andriy Gapon]

on 24/08/2010 23:05 Peter Jeremy said the following:
> On 2010-Aug-24 17:00:36 +0200, Ollivier Robert <roberto at keltia.freenix.fr> wrote:
>> According to Peter Jeremy:
>>> I suspect Artem is referring to his patch at http://pastebin.com/ZCkzkWcs
>>> which I have tweaked somewhat (see the last patch in 
>>> http://www.freebsd.org/cgi/query-pr.cgi?pr=146410 ).
>>
>> Thanks, cou you please send it in a non-QP-encoded form please?
> 
> See attached.
>>> Whilst these patches _are_ hacks, they seem to do a good job of
>>> making ZFS and UFS play together.
>>
>> Is the patch only useful in these mixed situations or could it be also interestng for those of use running full-zfs (cf. http://www.keltia.net/howtos/zfsboot)?
> 
> I think it will be useful.  As well as the trivial fix to count
> "cache" as "free" space (which is now in -stable), the intent of the
> patch is to improve the ability of ZFS to apply pressure to the VM
> subsystem.  In theory, this should improve overall system performance
> even in a ZFS-only environment where there is memory pressure due to
> large, long-running processes

Peter, Ollivier,

would it be possible for you to test patch informally specified in the following
post?
http://thread.gmane.org/gmane.os.freebsd.devel.hackers/40788

-- 
Andriy Gapon