From: Wu Fengguang <fengguang.wu@intel.com>
To: Dave Chinner <david@fromorbit.com>
Cc: "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Christoph Hellwig <hch@infradead.org>
Subject: Re: XFS/btrfs performance after IO-less dirty throttling
Date: Fri, 16 Dec 2011 13:16:09 +0800 [thread overview]
Message-ID: <20111216051609.GA4502@localhost> (raw)
In-Reply-To: <20111216042508.GE23662@dastard>
On Fri, Dec 16, 2011 at 12:25:08PM +0800, Dave Chinner wrote:
> On Fri, Dec 16, 2011 at 09:53:11AM +0800, Wu Fengguang wrote:
> > I'm indeed happy that you don't care that much on that regression
> > introduced by me ;-)
>
> Heh.
>
> BTW, do these tests run to ENOSPC?
Nope. Shall ENOSPC (performance) be tested?
> > 10829.00 +4.3% 11296.00 TOTAL xfs:xfs_delalloc_enospc
>
> This implies that it does.
Not really. The USB key partition size is 7.1GB.
Even in the fastest 1dd case, only 4GB data is written:
wfg@bee /export/writeback% cat fat/UKEY-thresh=100M/xfs-1dd-1-3.2.0-rc3/ls-files
131 -rw-rw-r-- 1 root root 4060078080 Dec 8 15:57 /fs/sdb3/zero-1
That's about 6.7MB/s write bandwidth running for 600 seconds.
Thanks,
Fengguang
next prev parent reply other threads:[~2011-12-16 5:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-14 14:31 XFS/btrfs performance after IO-less dirty throttling Wu Fengguang
2011-12-14 14:59 ` Wu Fengguang
[not found] ` <20111215133137.GA14562@localhost>
2011-12-16 0:31 ` Dave Chinner
2011-12-16 1:53 ` Wu Fengguang
2011-12-16 4:25 ` Dave Chinner
2011-12-16 5:16 ` Wu Fengguang [this message]
2011-12-19 1:57 ` Dave Chinner
2011-12-19 5:44 ` Wu Fengguang
[not found] ` <20111215135250.GB14562@localhost>
2011-12-16 5:27 ` Wu Fengguang
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