Review your favorite Linux distribution.
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


  Search this Thread
Old 11-02-2009, 12:38 PM   #1
LQ Newbie
Registered: Aug 2009
Posts: 3

Rep: Reputation: 0
hdparm parameters

I'm trying to do some disk access diagnostics but I don't quite understand how hdparm works.

I want to know what hdparm is actually doing (sequential? block size transfers?).

My goal is to compare apples to apples on some shared storage. One host is windows and one is linux. I'm using iometer on the Windows box and hdparm on the linux.

With iometer, I can set the block size transfer request and sequential reads but I want it to match the default hdparm ...

I'm running "hdparm -t"

Thanks in advance,
Old 11-02-2009, 04:19 PM   #2
LQ Guru
Registered: Jan 2006
Location: Ireland
Distribution: Slackware & Android
Posts: 8,560

Rep: Reputation: 862Reputation: 862Reputation: 862Reputation: 862Reputation: 862Reputation: 862Reputation: 862
You might do better comparing performance. Both will jump at default best options surely.
If you want to control blocksize in linux, use dd (man dd)

You want to see linux going faster? There's no need. Just know it and smile :-D.
Old 11-02-2009, 04:27 PM   #3
LQ Newbie
Registered: Aug 2009
Posts: 3

Original Poster
Rep: Reputation: 0
what is the default option in hdparm ?

is it 16kb transfer requests?

I just want an even disk access benchmark when using linux and windows. It looks like hdparm used 16kb transfer requests ... if i set 16kb in iometer, i get about the same read MB/s (setting 16k, 0% write, 0% random)


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
hdparm doesn't load hdparm.conf KOTAPAKA Linux - Hardware 2 05-21-2008 10:54 AM
hdparm risky parameters props666999 Slackware 2 03-08-2007 01:50 PM
Making hdparm parameters permanent Sabinou Linux - Hardware 2 11-29-2006 09:07 AM
hdparm Crumpet84 Linux - Newbie 1 04-16-2005 01:53 PM
hdparm -g NOT= hdparm -i ---LILO hangs @ L stevewalsh Linux - General 4 07-23-2001 10:37 PM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 09:19 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration