On Thu, 2 Mar 2000, Gregory Leblanc wrote:
> Perhaps they got reset when syslog cycled at midnight, or something. :)
> Try comparing the number of resets to the number of reads/writes, more like
> you would for ethernet collisions. I think that resets will only indicate a
> problem when the number of them compared with drive activity is fairly high.
> BTW, where did you pull that info from, it doesn't show anywhere under proc
> for me.
The system really is doing pretty much nothing. There's very little
syslog data and it's not gziping the files, so logrotate just has to
rename them and send syslogd a HUP.
Anyway...it took around an hour...but here's the tiobench numbers:
# tiobench.pl --numruns 5 --size 1024
Size is MB, BlkSz is Bytes, Read and Write are MB/sec, Seeks are Seeks/sec
Dir Size BlkSz Thr# Read (CPU%) Write (CPU%) Seeks (CPU%)
----- ------ ------- ---- ------------- -------------- --------------
. 1024 4096 1 25.6001 12.0% 8.64345 7.08% 159.776 0.48%
. 1024 4096 2 26.0927 12.3% 8.63389 7.11% 199.146 0.64%-W
. 1024 4096 4 25.5174 12.0% 8.64470 7.19% 236.201 0.75%-W
. 1024 4096 8 25.1011 12.1% 8.61819 7.25% 265.246 0.92%W
It looks like tiobench has some screen formatting issues (the -W's and W)
above at the end of the CPU column.
For the record, this is an Intel N440BX in an AstorII chassis, 256mb ECC
memory, PIII-500, AcceleRAID 250/8mb, 5 9gb IBM DNES-309170Y drives in a
RAID-5 array giving about 34gb of space run on a 30gb partition formatted
with 4kb blocks.
Strangely enough, these numbers are very similar to the bonnie block IO
results I posted earlier:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1024 6766 85.3 9150 7.6 6452 11.9 7840 94.8 26361 13.0 268.0 2.5
----------------------------------------------------------------------
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System Administrator | nestea'd...whatever it takes
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