[ Tuesday, March 7, 2000 ] Matthew Clark wrote:
> Hey guys.. I just installed and ran iozone.. neat tool..
>
> When the file size reaches 32Mb, I see a huge drop from around 129Mb/sec
> (obviously caching effects) right down to 10Mb/sec... then at 64Mb it drops
> to between 2.5 and 6.7 Mb/sec depending on record/block size...
Could you try bonnie (textuality.com/bonnie) or tiotest (mirror available
at sublogic.com/tio that includes the mmap code as 0.25)? The second
opinions they offer would be interesting to see.
> I have a Dual Intel PIII 500 system with 256Mb of main Memory... It has a
> Hardware RAID 5 system on 5 18 Gb Seagate Barracuda drives spread over 3 LVD
> SCSI channels on a Megaraid controller. I have the latest megaraid source
> (1.05) from ami.com.
what parameters did you use making the h/w array? (write-through vs
write-back, stripe size, etc)
James
