From: Bruce Cran <bruce@cran.org.uk>
To: Martin Steigerwald <Martin@lichtvoll.de>
Cc: Jens Axboe <axboe@kernel.dk>,
Greg Sullivan <greg.sullivan@sullivang.net>,
"fio@vger.kernel.org" <fio@vger.kernel.org>
Subject: Re: "Invalidate" not functional on Windows?
Date: Tue, 14 Aug 2012 18:40:30 +0100 [thread overview]
Message-ID: <502A8D8E.70200@cran.org.uk> (raw)
In-Reply-To: <201208141934.00289.Martin@lichtvoll.de>
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.
--
Bruce Cran
next prev parent reply other threads:[~2012-08-14 17:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAHaS=QzLW_CcDATeZnWXPEiVEGRJr9UHdohyJo53M4pp+hh27g@mail.gmail.com>
2012-08-14 4:57 ` "Invalidate" not functional on Windows? Greg Sullivan
2012-08-14 13:06 ` Jens Axboe
2012-08-14 17:33 ` Martin Steigerwald
2012-08-14 17:40 ` Bruce Cran [this message]
2012-08-14 17:50 ` Martin Steigerwald
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