From: Chris Mason <mason@suse.com>
To: Manuel Krause <manuelkrause@netscape.net>
Cc: "Dieter Nützel" <Dieter.Nuetzel@hamburg.de>,
reiserfs-list <reiserfs-list@namesys.com>
Subject: Re: udpated data logging available
Date: 01 Jul 2003 21:46:23 -0400 [thread overview]
Message-ID: <1057110382.20904.881.camel@tiny.suse.com> (raw)
In-Reply-To: <3F022B6B.3010801@netscape.net>
On Tue, 2003-07-01 at 20:46, Manuel Krause wrote:
>
> > Setting HZ=1000 (from 100) in linux/include/asm/param.h give me very
> > impressive latency boost. 2.4.21-rc1-jam1 (-rc1aa1)
>
> Just tried this HZ=1000 setting, too.
>
> (With the following patches "only": data-logging, search_reada-4 and
> rml-preempt on 2.4.21-final, and AA.00_nanosleep-6.diff (THAT ONE
> decreased my VMware+system CPU idle usage in these circumstances by
> approx. 1/2 [from 25% to approx. 12.5%] ).
>
Some userspace tools depend on the HZ value. It's clear the io-stalls-7
patch can't be the final one, I need to add userspace knobs to tune
things towards latency or multi-writer throughput (basically server or
desktop workloads).
-chris
next prev parent reply other threads:[~2003-07-02 1:46 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-16 11:47 udpated data logging available Chris Mason
2003-06-18 13:56 ` Chris Mason
2003-06-23 2:45 ` Chris Mason
2003-06-23 16:53 ` Christian Mayrhuber
2003-06-25 19:15 ` Chris Mason
2003-06-26 0:16 ` Christian Mayrhuber
2003-06-26 1:47 ` Chris Mason
2003-06-26 11:42 ` Dieter Nützel
2003-06-26 12:53 ` Chris Mason
2003-06-26 13:36 ` Manuel Krause
2003-07-01 23:41 ` Manuel Krause
2003-07-02 1:44 ` Chris Mason
2003-06-26 17:19 ` Dieter Nützel
2003-07-02 0:46 ` Manuel Krause
2003-07-02 1:46 ` Chris Mason [this message]
2003-06-26 11:48 ` Dieter Nützel
2003-06-26 12:18 ` Philippe Gramoullé
2003-06-26 12:35 ` Dieter Nützel
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