RedHat Support
Scott Burch
scott at bulldoginfo.com
Mon May 3 21:56:12 UTC 2004
*This message was transferred with a trial version of CommuniGate(tm) Pro*
>Well, I certainly hope you haven't let this issue just fester for a
>month! Stay on top of tech support. File reports with Bugzilla.
>It's _your_ responsibility to see that you get your money's worth.
>You know, squeeky wheel and all that...
I don't know what the rules are here about posting RedHat stuff, but
since I was praising people for providing good advise....
The issue I am having is regarding the megaraid drivers. I am running
a Dell server with raid 5 on RHEL 3.0. Access is very slow. hdparm -t
shows approximatly 8MB/sec. I have done the following to troubleshoot:
1) modified initrd to use the provided megaraid2 module
2) Booted off of Knoppix and checked the speed (75MB/sec)
3) Booted off of the RedHat disk1 in recovery mode and checked the
speed (no change still 8MB/sec)
4) used a large file copy operation to ensure that hdparm not giving
me erroneous information. Took about twice as long as my laptop
that is running Fedora. (I know this is a rough test)
FURTHER SYMPTOMS
'top' shows high iowait percentage. I assume this is just the OS outrunning
the drives.
If anyone has any further things for me to try, please let me know.
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