On 14/08/2012 18:33, Martin Steigerwald wrote:
invalidate discards the buffer cache before the job group is started. During the job execution caches will be in use anyway. Unless using direct I/O (direct=1). Don´t know whether direct I/O will work with "windowsaio" I/O engine or in any other way on Windows.
On Windows (windowsaio) use sync=1 to disable buffering of writes. For reads, use direct=1.
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