Hello,
I had curiosity about what would bonnie say about modern (well,
not so modern) Ultra2 Wide SCSI hard drives and latest Linux kernel,
so I ran it on a dual PII450, 512Mb with 3 IBM U2W and an AIC7890 SCSI
controller on board. I used a 600 Mb file to skip the cache. I ran the
test on kernel 2.3.99-6-pre3. (This version numbering is getting a bit
crazy :-)
The hard drives were the following (as reported by
/proc/scsi/scsi)
Host: scsi0 Channel: 00 Id: 09 Lun: 00
Vendor: IBM Model: DNES-309170W Rev: SA30
Type: Direct-Access ANSI SCSI revision: 03
Host: scsi0 Channel: 00 Id: 10 Lun: 00
Vendor: IBM Model: DDRS-39130D Rev: DC1B
Type: Direct-Access ANSI SCSI revision: 02
The results where the following:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Linux x86 MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
Id9 600 7395 94.5 25997 27.9 11132 16.8 7026 82.0 24316 23.4 558.5 5.3
Id10 600 6091 78.0 10841 10.7 8050 11.8 7175 83.3 19640 18.0 565.7 5.2
I would like to know if a 600Mb file is enough to skip the
cache, and I would also like to know results on similar configurations
with UDMA66 hard disks, as people here are asking me if it is really
necessary to buy "expensive" SCSI disks when you can buy cheap UDMA.
Thanks,
- german
PS: Reply to me directly as I know this is someway offtopic.
<>-------------------------------------+-----------------------------------<>
One O.S. to rule them all, | German Gomez Garcia
One O.S. to find them. | german@pinon.ccu.uniovi.es
One O.S. to bring them all |
and in the darkness bind them. | "Wur Qanar Wur Stilor Wur Kas"
<>-------------------------------------+-----------------------------------<>
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