From: Hans Reiser <reiser@namesys.com>
To: Clay Barnes <clay.barnes@gmail.com>
Cc: Reiserfs mail-list <Reiserfs-List@namesys.com>,
LKML <linux-kernel@vger.kernel.org>,
Alexander Lyamin aka FLX <flx@namesys.com>
Subject: Re: short term task list for Reiser4
Date: Tue, 11 Jul 2006 17:06:34 -0700 [thread overview]
Message-ID: <44B43D0A.8010803@namesys.com> (raw)
In-Reply-To: <20060711235553.GH9220@HAL_5000D.tc.ph.cox.net>
Reiser4 generally could use some knobs controlling things like whether
we trickle data slowly and continuously
>
>If you have a lazy write policy, what exactly is gained by intentionally
>delaying writes (beyond a certain size that is necessary to make things
>like dancing trees actually effecient)? If you trickle some data to
>disk, then when memory pressure causes (or an app calls) a big sync,
>then you have less to actually write. What I'm suggesting, now, is not
>a major write policy change, but rather a light process that is limited
>to extremely low resource use (I/O, CPU, etc.). It would take some of
>the edge off of major syncs, and for many (most?) non-server users, it
>could wholly eliminate memory pressure-induced heavy syncs.
>
>--Clay
>
>
>
>
next prev parent reply other threads:[~2006-07-12 0:06 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-11 22:04 short term task list for Reiser4 Hans Reiser
2006-07-11 22:29 ` Clay Barnes
2006-07-11 23:11 ` Hans Reiser
2006-07-11 23:55 ` Clay Barnes
2006-07-12 0:06 ` Hans Reiser [this message]
2006-07-13 19:17 ` Christoph Lameter
2006-07-13 19:53 ` Hans Reiser
2006-07-13 20:11 ` Christoph Lameter
2006-07-14 7:05 ` Hans Reiser
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