From: Andrew Morton <akpm@osdl.org>
To: Badari Pulavarty <pbadari@us.ibm.com>
Cc: linux-kernel@vger.kernel.org, suparna@in.ibm.com
Subject: Re: use O_DIRECT open file, when read will hang.
Date: Fri, 19 Sep 2003 09:57:36 -0700 [thread overview]
Message-ID: <20030919095736.284aaa9f.akpm@osdl.org> (raw)
In-Reply-To: <200309190939.18796.pbadari@us.ibm.com>
Badari Pulavarty <pbadari@us.ibm.com> wrote:
>
> I am also seeing some kind of regression on raw in 2.6.0-test5-mm2.
What is "some kind of regression"?
> Unfortunately, this happens only with huge database benchmarks.
> I still haven't narrowed it down.
Use mm3 - it has fixes. Daniel McNeil reports that mm3 fixes the dbt2
problems he was seeing.
>
> - can I do fsx, rawiobench on NFS files to test DIO on NFS ?
Probably, but it will deadlock immediately.
All the i_sem and i_alloc_sem rework needs to be pushed down to the
blockdev_direct_IO level. That means reverting
O_DIRECT-race-fixes-fixes-2.patch first.
next prev parent reply other threads:[~2003-09-19 16:56 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-19 4:46 Hugang
2003-09-19 5:54 ` Andrew Morton
2003-09-19 16:39 ` Badari Pulavarty
2003-09-19 16:57 ` Andrew Morton [this message]
2003-09-19 17:38 ` Badari Pulavarty
2003-09-19 22:12 ` Badari Pulavarty
2003-09-19 13:06 ` Richard B. Johnson
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