linux-kernel - Re: [RFC PATCH] a simple hardware detector for lattency as well as throughput

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Message-ID: <CAJRGBZxOo1Z=Ce6Qf9k1rXTonic5T+jbX4K_v5yxEe5cU0hVZg@mail.gmail.com>
Date:	Fri, 4 May 2012 14:16:27 +0800
From:	Luming Yu <luming.yu@...il.com>
To:	Jon Masters <jonathan@...masters.org>
Cc:	linux-kernel@...r.kernel.org, jcm@...masters.org
Subject: Re: [RFC PATCH] a simple hardware detector for lattency as well as throughput

On Thu, May 3, 2012 at 11:27 AM, Jon Masters <jonathan@...masters.org> wrote:
> On Apr 10, 2012, at 7:45 PM, Luming Yu wrote:
>
>> The rfc patch reuses some code and idea from jcm's hwlat_detector but
>> target for a broader problem that sometime we need to run a simple few minutes
>> hardware test to understand if there is any hardware latency as well as
>> throughput problem exposed on bare metal or left behind by BIOS or
>> interfered by SMI.
>
> Hey thanks. This is totally something I hoped would eventually go upstream,
> but I never got around to cleaning it up enough for mass consumption beyond
> the use case we had in mind (beating certain folks over the head when they
> have "value add" in BIOS code that causes huge SMIs, and the like, for RT).
>
> Did anyone ever get back to you on this one? I never saw any followup. I
> will be happy to do some testing and help you get this mainlined.

So far you are the only one. :-)
If you can find a maintainer for it, and find a way into mainline,
We probably can make it become a popular tool for hardware enabling.

/l
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