find /mnt/loop -type f -exec cat {} > /dev/null \;
gives:
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
..
1 0 0 13696 1272 8492 22448 0 0 1753 0 1277 2349 0 17 83
1 0 0 13696 1120 8480 22616 0 0 1751 0 1278 2346 1 21 78
1 0 0 13696 1120 8480 22616 0 0 1728 0 1260 2330 2 17 81
..
The same command after the files have been copied to an ext2fs partition
on the same physical disk gives:
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
..
1 0 0 13668 556 1316 30500 0 0 5617 0 273 200 2 25 74
1 0 0 13668 584 1316 30476 0 0 5734 0 275 215 3 22 75
1 0 0 13668 632 1312 30440 0 0 5716 0 265 202 1 29 70
..
I understand it isn't fair to compare iso9660/loop/ext2fs to ext2fs but
> 3 times slower? I have re-run the test for both cases 3 times (for the
whole 650 MB). What is going on here? Any takers?
One more thing. I can make my box totally unresponsive by running a cp
-r from/to UDMA to/from UW-SCSI. A totally new phenomen to me. Am I
alone with this one too?
TIA.
-- Samuli Kaski, samkaski@cs.helsinki.fi Department of Computer Science, University of Helsinki, Finland.
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