Topic: Speed issue - how to test?

[ed hunter]

I was wondering what's the best way to test the speed of a setup? Namely, I want to see how fast the hard drives are running... it seems somewhere I read on here that people were discussing hard drive speeds, how fast their raid setups were...  Im going to be installing 6.0.1 custom (great btw!) on a new Dell 700 with software raid with S-ATA drives.  On another board one person said that "older redhat" OS will not recognize the S-ATA correctly, it will only see them as slow ATA, non-DMA drives.  I was wondering whats the best way to test to see how fast they are working, compared to my current setup with IDE drives.
thanks for info, these boards are great!

[Guest]

I usually test the speed with the following command:
hdparm -Tt /dev/hdX

the first result is the machine and memory test and the second result is the hard drive test

hth

[ed hunter]

thanks, that's what I was looking for!

[Scott McKeen]

Can someone post what their speeds are for comparison? What's fast, relatively speaking...

[Scott McKeen]

Can someone post what their speeds are for comparison? What's fast, relatively speaking...

[allun]

I get the following on a P4 2.66GHz/1GB RAM/IDE, UDMA100 drives in software raid configuration:

/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.39 seconds =328.21 MB/sec
 Timing buffered disk reads:  64 MB in  1.60 seconds = 40.00 MB/sec

hth

Allun

[BlueSky]

For me, this is what I receive:

/dev/hda:
read() failed: Input/output error
 Timing buffered disk reads:  read() failed: Input/output error

Any ideas what went wrong !!

[guest]

you must use what your hard drives are:
/dev/hda master primary IDE
/dev/hdb slave primary IDE
/dev/hdc master secondary IDE
/dev/hdd slave secondary IDE
etc....
or /dev/sdX for scsi drives....

Mind you, turning on hdparm will improve IDE results

hth