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Date: Wed, 28 Sep 2005 10:12:04 +0200
Message-ID: <1CFEB358338412458B21FAA0D78FE86D4F0DF7@rennsmail02.eu.thmulti.com>
From: "Fillod Stephane" <stephane.fillod@thomson.net>
To: <linuxppc-embedded@ozlabs.org>
Subject: RE: How to use SPE on MPC8541
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Bonjour G=E9rard,

G=E9rard Gu=E9vel wrote:
>I don't especially want to see if the bit is set, I just want
>to improve the board performance for a Linux application :-).

Do you know where your CPU is spending much of its time?
It looks like a job for OProfile. Support for e500 exists in 2.6.x=20
thanks to the fine folks of Freescale. We appreciate their involvement=20
in OSS community.

>To check the performance, I used the Dhrystone 2.1 benchmark=20

I like the lmbench microbenchmark too. It depends on what profile
is your application (instruction mix, library calls, cache usage, =
paging,..)

>with the standard glibc (strcpy, strcmp, ...) on one part, and with
>the freescale SPE library on the other part (vstrcpy, vstrcmp, ...).

Will the SPE enhanced C library calls will be integrated in Glibc one =
day?=20


Regards,
Stephane