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Date: Fri, 17 Feb 2012 14:17:40 +1100 From: Benjamin Herrenschmidt <benh@...nel.crashing.org> To: Liu Qiang-B32616 <B32616@...escale.com> Cc: "jgarzik@...ox.com" <jgarzik@...ox.com>, "linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>, "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 01:54 +0000, Liu Qiang-B32616 wrote: > The default will be set in a common interface fsl_sata_set_irq_coalescing when > initialize the controller. This interface will check the range of intr count > and ticks and make sure the values are reasonably. Allright, but the current defaults are basically no coalescing right ? > It's hard to find a aggressive value to adapt all scenarios, so I use echo to adjust > the value. I remember P5020 have some performance issue, I will check it. > BTW, which filesystem do you use? Ext2 is lower than ext4 because metadata is > continuously wrote to disk. You can try ext4 or xfs. ext3 at the moment, I plan to switch to ext4 when I finish that fsck pass which is taking hours... I am not aware of the 5020 performance issues, is this something documented and/or fixable ? Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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