From: Andrea Arcangeli <andrea@suse.de>
To: Mike Fedyk <mfedyk@matchmail.com>
Cc: albhaf <albhaf@home.se>, linux-kernel@vger.kernel.org
Subject: Re: Better performance with 2.6
Date: Tue, 2 Mar 2004 23:31:48 +0100 [thread overview]
Message-ID: <20040302223148.GU2185@dualathlon.random> (raw)
In-Reply-To: <4044D513.5090607@matchmail.com>
On Tue, Mar 02, 2004 at 10:40:19AM -0800, Mike Fedyk wrote:
> albhaf wrote:
> >I know that 2.6 has the ability to get better
> >performance than the other versions.
> >But what parts of the kernel has provided to this
> >performance upgrade?
>
> Preempt
preempt hurts a bit performance (at least when running a single threaded
app) with the object of helping interactivity, I say in theory because
a 2.4-aa based kernel has a worst case RT scheduler latency lower than
2.6 with preempt enabled (during I/O and some other workload).
next prev parent reply other threads:[~2004-03-02 22:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-02 12:18 Better performance with 2.6 albhaf
2004-03-02 18:40 ` Mike Fedyk
2004-03-02 22:31 ` Andrea Arcangeli [this message]
2004-03-02 19:51 ` Albert Hafvenstrom
2004-03-02 19:10 ` Richard B. Johnson
2004-03-02 19:51 ` Chris Meadors
2004-03-02 19:58 ` Richard B. Johnson
2004-03-02 22:10 ` Darren Williams
2004-03-02 23:46 ` Mike Fedyk
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