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    SubjectRe: [RFC][PATCH] libata: enable SATA disk fua detection on default
    On Wed, May 09, 2012 at 02:19:56PM +0800, Zheng Liu wrote:
    > disable FUA detection for SATA disk. If FUA feature can be used, we
    > could disable io_barrier to improve the performance. Now one solution

    You can't run with -o nobarrier just because the driver/hardware support
    FUA. However the implementation of -o barrier (aka REQ_FUA) is a lot
    more efficient if it is implemented. If your workload has a high
    percentage of REQ_FUA requests it might be better to switch the disks to
    write through mode entirely.

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      Last update: 2012-05-09 11:02    [W:0.022 / U:17.364 seconds]
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