From owner-freebsd-hackers@FreeBSD.ORG  Tue Dec 15 22:39:19 2009
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Date: Tue, 15 Dec 2009 23:39:16 +0100
Message-ID: <2ae8edf30912151439h799277a0ofee13f5aecc55f00@mail.gmail.com>
From: Wiktor Niesiobedzki <bsd@w.evip.pl>
To: Ivan Voras <ivoras@freebsd.org>
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Cc: freebsd-fs <freebsd-fs@freebsd.org>,
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Subject: Re: ZFS, compression, system load, pauses (livelocks?)
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2009/12/15 Ivan Voras <ivoras@freebsd.org>:
> I have tried before reducing priority of ZFS taskqueues but only to
> PRIBIO, not below it - not much effect wrt "pauses".

I was testing with getting the thread as low priority as PUSER (with
original pjd@ patch) and it was actually performing better than the
current solution, though I found that quite risky.


Cheers,

Wiktor Niesiob=C4=99dzki