some simple nfs-benchmarks on 5.4 RC2

[Eric Anderson]

Claus Guttesen wrote:
>>elin% dd if=/dev/zero of=/nfssrv/dd.tst bs=1024 count=1048576
>>1048576+0 records in
>>1048576+0 records out
>>1073741824 bytes transferred in 21.373114 secs (50237968 bytes/sec)
>>
> 
> 
> Follow-up, did the same dd on a Dell 2850 with a LSI Logic (amr), 6
> scsi-disks in a raid 5:
> 
> frodo~%>dd if=/dev/zero of=dd.tst bs=1024 count=1048576
> 1048576+0 records in
> 1048576+0 records out
> 1073741824 bytes transferred in 8.972321 secs (119672693 bytes/sec)
> 
> Must faster. FreeBSD 5.4 RC2.
> 
> Are there any benchmarks comparing the atabeast against other
> ide->fc-storage-systems in relation to disk-access?

That's about what I expected.  RAID 5 depends on fast xor, so a slow processor 
in a hardware RAID5 box will slow you down a lot.

You should try taking the two RAID5's (6 disks each) created on your original 
controller and striping those together (RAID 50) - this should get you some 
better performance, probably not as close as the amr device, but I would guess 
somewhere in the 80-90mb/s range.


Eric


-- 
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Eric Anderson        Sr. Systems Administrator        Centaur Technology
A lost ounce of gold may be found, a lost moment of time never.
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