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Date:      Fri, 24 Sep 2010 15:17:46 +0300
From:      Andriy Gapon <avg@freebsd.org>
To:        Jeff Roberson <jroberson@jroberson.net>
Cc:        freebsd-hackers@freebsd.org, Jeff Roberson <jeff@freebsd.org>
Subject:   Re: zfs + uma
Message-ID:  <4C9C96EA.9060100@freebsd.org>
In-Reply-To: <4C99AF63.3000900@freebsd.org>
References:  <4C93236B.4050906@freebsd.org>	<4C935F56.4030903@freebsd.org>	<alpine.BSF.2.00.1009181221560.86826@fledge.watson.org>	<alpine.BSF.2.00.1009181135430.23448@desktop>	<4C95C804.1010701@freebsd.org>	<alpine.BSF.2.00.1009182225050.23448@desktop>	<4C95CCDA.7010007@freebsd.org>	<4C984E90.60507@freebsd.org>	<alpine.BSF.2.00.1009202037260.23448@desktop> <AANLkTimy=2WUcH59R5spajrKkUYQnii9SD1ZDdMymNC%2B@mail.gmail.com> <4C99AF63.3000900@freebsd.org>

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on 22/09/2010 10:25 Andriy Gapon said the following:
> 2. patch that attempts to implement Jeff's three suggestions; I've tested
> per-CPU cache size adaptive behavior, works well, but haven't tested per-CPU
> cache draining yet:
> http://people.freebsd.org/~avg/uma-2.diff

Now I've fully tested this change, found out that it is a very bad idea to call
cache_drain/cache_drain2 on UMA_ZFLAG_INTERNAL zones, and updated the patch.
Everything seems to work as expected.

-- 
Andriy Gapon



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