Re: RHEL 3 x86 and LSI Megaraid

[Jesse Keating <jkeating j2solutions net>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Sunday 26 October 2003 10:55, Stephen Smoogen wrote:
> Could you give absolute kernel versions for these by the way.. it might
> help track down where things went bad. The other issues I can think of
> are:

I'll report these when I get into work on Monday.  RHEL3 is the shipping 
i686 smp-kernel since there isn't any updates yet.  RHL9 kernel was 
2.4.20-20.9smp i686.

> 1) hdparm is not written for SCSI disks and RAID controllers. It does
> low level things that might change the time numbers between kernels if
> the code changes. Using Bonnie++ or other tools will probably get a
> quicker kernel answer as they wont be saying the above. [the dd also
> gives better answers, but using a standard tool probably would get rid
> of all the 'what-ifs']

I'll run tiobench and bonnie++ on each kernel, attach a file with the 
output, or better yet, put the file on our public webserver and post a 
link to it.

> 2) If possible see if the module from the RHL 9 version that gives good
> times can compile with a RHEL kernel. If it can.. then you can use it
> for a second test of where in the kernel the slowdown has occurred.

I'll give that a try.  I have tried the module source that LSI has for 
download, but it resulted in the same slow speeds.

- -- 
Jesse Keating RHCE MCSE	(http://geek.j2solutions.net)
Fedora Legacy Team	(http://www.fedora.us/wiki/FedoraLegacy)
Mondo DevTeam		(www.mondorescue.org)
GPG Public Key		(http://geek.j2solutions.net/jkeating.j2solutions.pub)

Was I helpful?  Let others know:
 http://svcs.affero.net/rm.php?r=jkeating
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2 (GNU/Linux)

iD8DBQE/nKEx4v2HLvE71NURAjOzAJ9Sgf86WU4BSN1wXEwh5BMGvLC0jACdEr0u
zcEfF07jz77n57lHTDbev5Q=
=BRAp
-----END PGP SIGNATURE-----