Re: Strange delete performance using XFS

Justin Piszcz
2007-04-05T11:11:46Z

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On Thu, 5 Apr 2007, Thomas Kaehn wrote:

> Hi Justin,
>
> On Thu, Apr 05, 2007 at 06:21:43AM -0400, Justin Piszcz wrote:
>>> So there is no improvement for a single disk.
>>>
>> What kind of disks are you using? Maybe just slow disks??
>
> I am using the following disks:
>
> http://www.westerndigital.com/en/products/products.asp?DriveID=233
>
> When disabling write barriers delete times are OK. I think that
> the 3ware RAID controller could have a problem with it. I'll try to
> contact 3ware in order to come to know if this feature is supported or
> not.
>
> Additionally I am going to try out some advices presented in the
> 3ware knowledge base.
>
> Ciao,
> Thomas
> --
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Ah, ok-- Keep us updated/let us know if you get any new findings/etc.

Something else you can try as well is turning off NCQ, that gave me a
10-35% performance boost depending on the benchmark.

Justin.