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Re: r4400 cache code speed

To: Ladislav Michl <>
Subject: Re: r4400 cache code speed
From: Ralf Baechle <>
Date: Wed, 16 Apr 2003 14:33:13 +0200
In-reply-to: <20030416110202.GA2319@simek>; from on Wed, Apr 16, 2003 at 01:02:02PM +0200
Original-recipient: rfc822;
References: <20030416110202.GA2319@simek>
User-agent: Mutt/
On Wed, Apr 16, 2003 at 01:02:02PM +0200, Ladislav Michl wrote:

> make vmlinux on current cvs tree
> 2.4.19-rc1
> real    40m32.394s
> user    37m48.550s
> sys     2m13.350s
> cvs current
> real    41m14.253s
> user    37m39.880s
> sys     3m6.730s

This really comes as a surprise.  You have lost about as much performance
as other people have won.  I wonder if that is related to you using the
R4400SC which along with it's older brother R4000SC still is a major
special case in the cache code.


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