Hi Greg,
Yeah I know sorry about the mail line wrap thing I only
noticed after I had sent the email.
4 SCSI disks 40mb/s synchronous SCSI config, 2 Intel P500's and 256mb RAM,
Redhat 6.2, raid0145-19990824-2.2.11, raidtools-19990824-0.90.tar.gz
and kernel 2.2.13 SMP.
[root@bod tiobench-0.3.1]# ./tiobench.pl --dir /raid5
No size specified, using 200 MB
Size is MB, BlkSz is Bytes, Read, Write, and Seeks are MB/sec
File Block Num Seq Read Rand Read Seq Write Rand Write
Dir Size Size Thr Rate (CPU%) Rate (CPU%) Rate (CPU%) Rate (CPU%)
------- ------ ------- --- ----------- ----------- ----------- -----------
/raid5 200 4096 1 27.96 19.4% 0.794 1.01% 12.93 12.6% 0.877 1.62%
/raid5 200 4096 2 21.37 15.8% 0.991 1.11% 11.46 17.1% 0.801 1.71%
/raid5 200 4096 4 18.23 13.7% 1.153 1.20% 11.00 19.4% 0.777 2.00%
/raid5 200 4096 8 15.70 15.0% 1.306 1.46% 10.62 20.4% 0.768 2.27%
Options ...
Run #1: ./tiotest -t 2 -f 100 -r 2000 -b 4096 -d /raid5 -T
Is that enough to go on? Thanks for the lead on tiobench.
Darren
-----Original Message-----
From: Gregory Leblanc [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 08, 2000 3:29 AM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: bonnie++ for RAID5 performance statistics
> -----Original Message-----
> From: Darren Evans [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, June 07, 2000 3:02 AM
> To: [EMAIL PROTECTED]
> Subject: bonnie++ for RAID5 performance statistics
>
> I guess this kind of thing would be great to be detailed in the FAQ.
Did you try reading the archives for this list, or the benchmarking HOWTO?
> Anyone care to swap statistics so I know how valid these are.
>
> This is with an Adaptec AIC-7895 Ultra SCSI host adapter.
>
> Is this good, reasonable or bad timing?
Impossible to tell, since we only know the adapter. How many disks, what
sort of configuration, what processor/ram? Without those, you can't even
guess at how the performance compares. You should also check out tiobench
if you're doing multi-disk things, since it does a pretty darn good job of
threading, which takes better advantage of RAID. tiobench.sourceforge.net,
I think.
One other thing, I find it easier to read things if your mail program
doesn't wrap lines like that. If you can't modify it, attachments are good
for me. Later!
Greg
