From: Alex Tomas <bzzz@tmi.comex.ru>
To: Ed Sweetman <ed.sweetman@wmich.edu>
Cc: linux-kernel@vger.kernel.org, ext2-devel@lists.sourceforge.net
Subject: Re: [RFC] extents support for EXT3
Date: Fri, 29 Aug 2003 22:09:13 +0400 [thread overview]
Message-ID: <m3ad9snxo6.fsf@bzzz.home.net> (raw)
In-Reply-To: 3F4F923F.9070207@wmich.edu
>>>>> Ed Sweetman (ES) writes:
ES> Throughput 221.812 MB/sec 16 procs ext2
ES> Throughput 159.495 MB/sec 16 procs ext3-extents (definitely enabled)
ES> Throughput 147.598 MB/sec 16 procs ext3 (patched but disabled)
ES> There is an obvious improvement, but nothing near the 70+% increase
ES> you saw. Subsequent runs run anything from a little lower than above
ES> for extents to 167MB/s.
it seems one of my scsi drive is a bit broken (caching, at least).
sorry for invalid numbers. on another drive I see following:
w/o extents:
[root@zefir root]# /root/db2.sh 2 16
Throughput 119.199 MB/sec 16 procs
Throughput 106.09 MB/sec 16 procs
Average: 112.64450
with extents:
[root@zefir root]# /root/db2.sh 2 16
Throughput 156.846 MB/sec 16 procs
Throughput 170.591 MB/sec 16 procs
Average: 163.71850
so, this time improvement is about 45%
I can't explain this yet. need to be investigated carefully
ES> By the way, what's the behavior of opening an existing non-extent file
ES> and writing and reading to it while the partition is mounted with
ES> extents enabled?
those files are handled usual way
next prev parent reply other threads:[~2003-08-29 18:03 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-28 8:22 [RFC] extents support for EXT3 Alex Tomas
2003-08-28 17:22 ` [Ext2-devel] " Mike Fedyk
2003-08-29 5:55 ` Alex Tomas
2003-08-28 18:12 ` Ed Sweetman
2003-08-29 5:59 ` Alex Tomas
2003-08-29 15:28 ` Ed Sweetman
2003-08-29 15:38 ` Alex Tomas
2003-08-29 15:52 ` Ed Sweetman
2003-08-29 16:10 ` Alex Tomas
2003-08-29 16:16 ` Alex Tomas
2003-08-29 16:20 ` Ed Sweetman
2003-08-29 16:34 ` Alex Tomas
2003-08-29 17:49 ` Ed Sweetman
2003-08-29 18:09 ` Alex Tomas [this message]
2003-08-29 19:55 ` Ed Sweetman
2003-08-29 21:39 ` [Ext2-devel] " Mike Fedyk
2003-08-29 22:25 ` Ed Sweetman
2003-08-29 23:17 ` Mike Fedyk
2003-08-31 20:25 ` Eric W. Biederman
2003-08-31 20:37 ` Alex Tomas
2003-09-05 10:06 ` Pavel Machek
2003-09-05 14:55 ` Eric W. Biederman
2003-08-30 9:09 ` Alex Tomas
2003-08-30 8:55 ` Alex Tomas
2003-08-30 10:13 ` Alex Tomas
2003-08-28 22:00 ` Ramón Rey Vicente
2003-08-29 6:04 ` Alex Tomas
2003-08-29 9:55 ` Ramón Rey Vicente
2003-09-06 0:19 ` jw schultz
2003-09-06 6:09 ` Alex Tomas
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