Re: System unresponsive during HDD activity

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On Sat, 2010-09-18 at 01:36 -0700, Konstantin Svist wrote:
> On 09/17/2010 12:41 PM, Gilboa Davara wrote:
> > Your SATA seems to be configured to work in IDE compatibility mode.
> 
> 
> You were right, I found a mention of my chipset and a patch 
> (http://www.codon.org.uk/~mjg59/tmp/ahci_quirk_cleanup.diff)
> After compiling the kernel with it, the chipset is now running with ahci 
> driver. That enabled NCQ and improved some fio benchmarks, but looks 
> like the lag during svn up is still present.
> Still, some improvement is a good thing.
> 

I'd suggest you file a bug report in http://bugzilla.redhat.com and ask
that this patch will be included. Make sure you post the complete
hardware configuration in the bug report.
Looking at the code, I don't see any huge reason that this patch (minus
some cleanup) won't find it way into the kernel. (Though, I'd check
http://bugzilla.kernel.org and see if its already in-line for inclusion
in the up stream kernel.)

- Gilboa


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