SCSI & storage

[Kevin Buettner]

On Mar 24,  6:31pm, plug@arcticmail.com wrote:

> It would be interesting to see similar tests in which the
> filesystems were mounted such that the inode access time
> is not updated.

I tried it on Linux and FreeBSD.  (I used the noatime option to mount.)

The Linux results showed no appreciable difference.

FreeBSD crashed when I ran the test on the Linux partition mounted with
noatime.

When I ran the test on the UFS partition, I saw the following:

mesquite:kev$ time find linux-2.4.2 -type f -print | xargs wc > /dev/null

real    0m30.553s
user    0m1.510s
sys     0m1.162s
mesquite:kev$ time find linux-2.4.2 -type f -print | xargs wc > /dev/null

real    0m4.904s
user    0m1.526s
sys     0m0.646s

These results are only slightly better than without noatime....

>> FreeBSD 4.2 (2) |   31.00 |    1.43 |    1.25 |    4.93 |    1.45 |    0.75 |

Kevin