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Legacy Forums => General Discussion (Legacy) => Topic started by: ed hunter on March 27, 2004, 06:27:05 PM

Title: Speed issue - how to test?
Post by: ed hunter on March 27, 2004, 06:27:05 PM

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!

Title: Hard drive speed test
Post by: Guest on March 27, 2004, 09:55:50 PM

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

Title: Speed issue - how to test?
Post by: ed hunter on March 27, 2004, 10:36:25 PM

thanks, that's what I was looking for!

Title: Speed Test - How fast is fast?
Post by: Scott McKeen on March 29, 2004, 03:08:03 AM

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

Title: Speed Test - How fast is fast?
Post by: Scott McKeen on March 29, 2004, 03:08:32 AM

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

Title: Speed issue - how to test?
Post by: allun on March 29, 2004, 05:17:25 AM

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

Title: Speed issue - how to test?
Post by: BlueSky on March 29, 2004, 08:46:49 AM

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 !!

Title: speed
Post by: guest on March 29, 2004, 09:55:59 AM

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