From: Jens Axboe <jaxboe@fusionio.com>
To: wu meng <james.wumeng@gmail.com>
Cc: fio@vger.kernel.org
Subject: Re: Delivery Status Notification (Failure)
Date: Mon, 14 Feb 2011 10:15:07 +0100 [thread overview]
Message-ID: <4D58F29B.3000101@fusionio.com> (raw)
In-Reply-To: <AANLkTikCqfuWKFQU0w=0N6n-C9d-VNUvB1XF+mzXzewp@mail.gmail.com>
On 2011-02-14 09:08, wu meng wrote:
> Hi,
>
> I've a problem on using fio:
> "buffered=bool If value is true, use buffered io. This is the opposite
> of the 'direct' option. Defaults to true."
> So what kind of buffer mean for this option? Is that mean kernel cache
> or user space buffer?
'direct' and 'buffered' control the same thing, they are just opposites.
Both refer to the use of kernel file cache bypass.
--
Jens Axboe
prev parent reply other threads:[~2011-02-14 9:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTin2ZjkkFOrwo++EZw0arQnsMrqzy0drUF6WrqDm@mail.gmail.com>
[not found] ` <20cf30564493a84040049c39612f@google.com>
2011-02-14 8:08 ` Delivery Status Notification (Failure) wu meng
2011-02-14 9:15 ` Jens Axboe [this message]
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