From: Robert Whitton <rwhitton@iee.org>
To: "Clemens Ladisch" <clemens@ladisch.de>, <rwhitton@iee.org>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: Background memory scrubbing
Date: Wed, 20 Apr 2011 15:40:42 +0100 [thread overview]
Message-ID: <16117.1303310442@jupiter.eclipse.co.uk> (raw)
> Robert Whitton wrote:
> > I have a home grown module that performs background memory scrubbing
> > to eliminate single bit memory errors before they become a problem.
> > ... it is specifically targeted at the AMD64 PC architecture
>
> Then why don't you use the memory controller's automatic background
> memory scrubbing support? Doesn't your BIOS have this option?
>
> Regards,
> Clemens
>
Hi,
Unfortunately in common with a large number of hardware platforms background scrubbing isn't supported in the hardware (even though ECC error correction is supported) and thus there is no BIOS option to enable it. The software solution has always been fine and the CPU load negligible as it's only necessary to complete one complete scrub every day or so. I just need to find a solution to making this work on newer Linux kernels.
Rob
next reply other threads:[~2011-04-20 14:41 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-20 14:40 Robert Whitton [this message]
2011-04-20 15:19 ` Background memory scrubbing Clemens Ladisch
2011-04-20 15:35 ` Borislav Petkov
2011-04-20 15:46 ` Markus Trippelsdorf
2011-04-20 15:58 ` Borislav Petkov
2011-04-20 16:45 ` Markus Trippelsdorf
2011-04-20 16:55 ` Markus Trippelsdorf
2011-04-20 17:36 ` Borislav Petkov
2011-04-20 18:28 ` [PATCH] edac: Remove debugging output in scrub rate handling Markus Trippelsdorf
2011-04-21 11:55 ` Borislav Petkov
2011-04-20 19:23 ` Background memory scrubbing Bill Gatliff
-- strict thread matches above, loose matches on Subject: below --
2011-04-20 17:05 Robert Whitton
2011-04-20 17:53 ` Rik van Riel
2011-04-24 20:47 ` Pavel Machek
2011-04-20 15:46 Robert Whitton
2011-04-20 16:01 ` Borislav Petkov
2011-04-25 16:53 ` Chris Friesen
2011-04-20 7:58 Robert Whitton
2011-04-20 13:30 ` Clemens Ladisch
2011-04-20 16:45 ` Rik van Riel
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