Bug 86400 - 2.4.18-24, 1.4.18-26, 2.4.18-27 and 3wre raid 5
2.4.18-24, 1.4.18-26, 2.4.18-27 and 3wre raid 5
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i686 Linux
medium Severity medium
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Assigned To: Arjan van de Ven
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2003-03-21 07:42 EST by Ray
Modified: 2007-04-18 12:52 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-09-30 11:40:41 EDT
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Ray 2003-03-21 07:42:11 EST
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Description of problem:
Seems to be a problem in the updated kernels and the 3ware controller. Comparing
the 2.4.18-14 to the updated 2.4.18-24, 2.4.18-26 and 2.4.18-27 with MySQL
selects shows the difference in the speed. A 70 million row table can be
duplicated ( by doing insert into select * from) in a hour with the 2.4.18-14
but using the updated kernels take over 4 hours. The 3ware is in raid5 mode and
the problem exists on several PC's. This problem is not bound to any 1 computer
or 3ware model, it seems to be in the 6000 and 7000 series. It is also not just
a problem with MySQL, seems to affect a ftp transfer as well. Typically we get
11MBs on a ftp transfer from PC to PC, but with the new kernel we seem to get
2MBs. Anything to do with writing to disk seems to have the problem.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Install updated kernel

Actual Results:  I/O slowdown

Expected Results:  Newer kernel should have speed improvment

Additional info:
Comment 1 Bugzilla owner 2004-09-30 11:40:41 EDT
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem

The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, 
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/

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