Strange ATTO numbers...

cubalis

Hello everyone, I am new to this forum and new to a RAID 0 with a Promise tx2000 and two 120Gb ATA 100 Seagate Barracuda's. I have been reading about people's results with ATTO and was wondering if anyone can point me in the right direction.

I have the stripe set to 32k, cluster size is unknown (if anyone could let me know where to find that info it would be greatly appreciated.)

My write speeds seem very low, but my read speeds seem crazy high.

Running a standard system (ECS L7... board with an athlon 2500+ and 512Mb DDR 2700)

Thanks,
cubalis


*edit - spelling is fun*

Tex

The writes are low but the reads are impossible. Those drives in a optimal setting with that controller might just break 100,000 on reads and maybe 80 to 90,000 on writes. And thats doing good. The 32bit pci bus limits you to a theoetical max of about 140,000 in bandwidth. 64bit slots on servers can go higher. You have differant partitions try and run it several times on differant parttions as I see that was the "e" drive.

If the writes were not so low I would of suspected that was a ram drive not a disk drive. But every once in a while atto just burps and throws out a wild azz number that doesnt make sense.

Tex

cubalis

Yeah.... I tried it on all of my partitions and it came up with very similar results, so I think I will disregard this program for benchmarking at the time being.

Can anyone share some knowledge of other decent bench programs? Thanks in advance, and thanks Tex for clearing up some of my confusion

cubalis

Garg

SiSoft Sandra has a disk benchmarker, along with other benchmarkers for RAM, CPU, etc.

Tex

I wonder what is whacking atto on your system like that though? usually it only barfs everyt once in a 100 runs like that?

Tex