2.2.6-pre6 with ext3-2.4-0.0.8-246p5
System is a dual PIII/1Ghz 2G memory
Qlogic 2100 Fibre Channel
This is on a raid5 -- since both linux version and ext3 were changes not
sure which is the cause yet. I'm waiting for resync to finish to try it on
ext2.
tiobench.pl --size 4000
Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/secd . -T
File Block Num Seq Read Rand Read Seq Write Rand Write
Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%)
------- ------ ------- --- ----------- ----------- ----------- -----------
. 4000 4096 1 69.09 73.2% 0.909 1.74% 25.75 94.8% 1.247 0.63%
. 4000 4096 2 23.53 24.4% 1.001 1.63% 25.83 103.% 1.241 0.71%
. 4000 4096 4 20.07 21.1% 1.157 2.04% 27.32 98.7% 1.233 1.00%
Run #1: /usr/local/bin/tiotest -t 8 -f 500 -r 500 -b 4096 -d . -T
Message from syslogd@yeti at Thu Jun 28 08:11:08 2001 ...
yeti kernel: JBD: out of memory for journal_head
System locked up hard.
This same test was run multiple times on 2.2.5 without ext3 with much better
results too:
Done 6/7/01
Linux yeti 2.4.5 #2 SMP Sat May 26 07:13:52 EDT 2001 i686 unknown
root@yeti:/usr5# tiobench.pl --size 4000
Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/secd . -T
File Block Num Seq Read Rand Read Seq Write Rand Write
Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%)
------- ------ ------- --- ----------- ----------- ----------- -----------
. 4000 4096 1 81.48 65.7% 0.499 0.54% 34.33 24.0% 1.481 1.51%
. 4000 4096 2 77.10 77.2% 0.643 0.96% 33.04 23.6% 1.493 1.81%
. 4000 4096 4 67.18 72.4% 0.797 1.39% 28.03 20.8% 1.494 1.94%
. 4000 4096 8 58.29 66.2% 0.954 1.95% 24.89 19.8% 1.498 2.15%
________________________________________
Michael D. Black Principal Engineer
mblack@csihq.com 321-676-2923,x203
http://www.csihq.com Computer Science Innovations
http://www.csihq.com/~mike My home page
FAX 321-676-2355
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This archive was generated by hypermail 2b29 : Sat Jun 30 2001 - 21:00:18 EST