Description of problem: So, with older kernel, an 88gb tar takes 4h22min whereas the newer kernel takes 13hr40min. Red Hat Enterprise Linux ES (2.4.21-20.ELsmp) (newer & slow) Red Hat Enterprise Linux ES (2.4.21-15.0.4.ELsmp) (older & okay) Version-Release number of selected component (if applicable): Red Hat Enterprise Linux ES (2.4.21-20.ELsmp) (newer & slow) Red Hat Enterprise Linux ES (2.4.21-15.0.4.ELsmp) (older & okay) How reproducible: time tar cvf /tmp/tmp.tar /u Steps to Reproduce: 1. boot latest kernel, run test 2. boot 2nd oldest kernel, run test 3. Actual results: Expected results: Additional info: At first, I thought it was related to a USB drive issue, but I did the above test from/to the same SCSI drives.
A fix for this problem was was committed to the RHEL3 U4 patch pool Thursday evening (in kernel version 2.4.21-20.11.EL). The fix is essentially the same as in comment #6 of bug 132155.
I installed " 2.4.21-20.8.pagecache.ELsmp #1 SMP" kernel and it only took 4 hours and 24 minutes (4h24min) to backup 90gb. So, I'd say that you've got a good patch. (at least it solves my problem) What's the timeframe for general release? Thanks!
This patch will be in the RHEL3-U4 update, avaialable on about 12/1/04. We can send you early beta releases at anytime. Larry
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2004-550.html