linux-kernel - Re: realtime preemption performance difference

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Message-ID: <88dfed9d0709241427v329aeed9jfbc298666ac483c8@mail.gmail.com>
Date:	Tue, 25 Sep 2007 05:27:27 +0800
From:	hufey <hufeyy@...il.com>
To:	"Jaswinder Singh" <jaswinderlinux@...il.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu
Subject: Re: realtime preemption performance difference

On 9/24/07, Jaswinder Singh <jaswinderlinux@...il.com> wrote:
> Hi all,
>
> I want to check performance difference by using realtime preemption patch :
>
> http://www.kernel.org/pub/linux/kernel/projects/rt/
>
> Please let me know from where I can download samples to test realtime
> preemption performance difference.
>

As far as I know, some embedded linux vendors such as MontaVista
provide kernel patch to export some interfaces to measure realtime
performance.

> Can someone please share performance numbers for your hardware:-
>
> 1. Interrupt latency
> 2. Task switching time
> 3. hard-realtime scheduling latency
>
> Thank you,
>
> Jaswinder Singh.
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