2002-10-23 19:51:23

by Andrew Morton

[permalink] [raw]
Subject: Re: 2.5.44-[mm3, ac2] time to tar zxf kernel tarball compared forvarious fs.

Steven Cole wrote:
>
> ext3
> tar zxf linux-2.5.44.tar.gz 2.5.44-mm3 2.5.44-ac2
> user 4.42 4.39
> system 4.09 4.05
> elapsed 00:53.17 00:34.05
> % CPU 16 24

The smaller fifo_batch setting hurts when there are competing
reads and writes on the same disk.

> reiserfs
> xfs
> jfs

ext2?


2002-10-23 20:00:20

by Steven Cole

[permalink] [raw]
Subject: Re: 2.5.44-[mm3, ac2] time to tar zxf kernel tarball compared forvarious fs.

On Wed, 2002-10-23 at 13:57, Andrew Morton wrote:
> Steven Cole wrote:
> >
> > ext3
> > tar zxf linux-2.5.44.tar.gz 2.5.44-mm3 2.5.44-ac2
> > user 4.42 4.39
> > system 4.09 4.05
> > elapsed 00:53.17 00:34.05
> > % CPU 16 24
>
> The smaller fifo_batch setting hurts when there are competing
> reads and writes on the same disk.
>
> > reiserfs
> > xfs
> > jfs
>
> ext2?
OK, if ext2 would be of interest.
Here is the result of df -T:

Filesystem Type Size Used Avail Use% Mounted on
/dev/hda1 ext3 236M 77M 148M 35% /
/dev/hda9 ext3 20G 8.0G 12G 41% /home
/dev/hda11 jfs 3.9G 1.8G 2.2G 46% /share_jfs
/dev/hda10
reiserfs 4.0G 73M 3.9G 2% /share_reiser
/dev/hda12 xfs 4.8G 290M 4.5G 6% /share_xfs
/dev/hda8 ext3 236M 4.7M 219M 3% /tmp
/dev/hda6 ext3 2.9G 1.3G 1.5G 47% /usr
/dev/hda7 ext3 479M 63M 392M 14% /var

I'll do the test on /tmp remounted as ext2.
Back in a while,

Steven

2002-10-23 19:58:40

by Benjamin LaHaise

[permalink] [raw]
Subject: Re: 2.5.44-[mm3, ac2] time to tar zxf kernel tarball compared forvarious fs.

On Wed, Oct 23, 2002 at 12:57:24PM -0700, Andrew Morton wrote:
> Steven Cole wrote:
> >
> > ext3
> > tar zxf linux-2.5.44.tar.gz 2.5.44-mm3 2.5.44-ac2
> > user 4.42 4.39
> > system 4.09 4.05
> > elapsed 00:53.17 00:34.05
> > % CPU 16 24
>
> The smaller fifo_batch setting hurts when there are competing
> reads and writes on the same disk.

Is the ext2/3 allocation heuristic fix in yet? That might swing things
around again too.

-ben
--
"Do you seek knowledge in time travel?"

2002-10-23 20:27:07

by Steven Cole

[permalink] [raw]
Subject: Re: 2.5.44-[mm3, ac2] time to tar zxf kernel tarball compared forvarious fs.

On Wed, 2002-10-23 at 13:57, Andrew Morton wrote:
> Steven Cole wrote:
> >
> > ext3
> > tar zxf linux-2.5.44.tar.gz 2.5.44-mm3 2.5.44-ac2
> > user 4.42 4.39
> > system 4.09 4.05
> > elapsed 00:53.17 00:34.05
> > % CPU 16 24
>
> The smaller fifo_batch setting hurts when there are competing
> reads and writes on the same disk.
>
> > reiserfs
> > xfs
> > jfs
>
> ext2?

OK, here is the ext2 data. This was done on my /tmp partition.

For ext2, the variation between runs was as much as between
mm3 and ac2. This data is from the first of 4 runs as before.

Steven

ext2
tar zxf linux-2.5.44.tar.gz 2.5.44-mm3 2.5.44-ac2
user 4.17 4.16
system 2.76 2.7
elapsed 00:08.39 00:08.05
% CPU 82 85

rm -rf linux-2.5.44 2.5.44-mm3 2.5.44-ac2
user 0.01 0.01
system 0.4 0.37
elapsed 00:02.31 00:01.17
% CPU 18 33