linux-kernel - RE: [PATCH V2 RESEND] fsl-sata: I/O load balancing

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Message-ID: <1329448724.2892.43.camel@pasglop>
Date:	Fri, 17 Feb 2012 14:18:44 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Li Yang-R58472 <r58472@...escale.com>
Cc:	Liu Qiang-B32616 <B32616@...escale.com>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	"jgarzik@...ox.com" <jgarzik@...ox.com>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH V2 RESEND] fsl-sata: I/O load balancing

On Fri, 2012-02-17 at 03:09 +0000, Li Yang-R58472 wrote:
> >I tried a debian install on the p5020ds here and I find SATA to be
> >extremely slow, generating millions of interrupts. I think the
> defaults
> >should be a lot more aggressive at coalescing.
> 
> The P5020 has a hardware problem with SATA, making it generate more
> interrupts than it should.  A new revision of the silicon will fix it.

Ok cool. With a bit of luck you guys can send me a new silicon when it's
available then :-) (The one in the board you got me seems to be in a
socket).

Cheers,
Ben.


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