Red Hat Bugzilla – Bug 245715
lvs syncdaemon causes 1.00 too high average load on system
Last modified: 2014-06-18 04:00:13 EDT
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.0.12) Gecko/20070531 Foobar/1.5.0.12-0.1.0.foo4 Firefox/1.5.0.12 Description of problem: Because of bug in kernel adding lvs syncdaemon causes high average load on system without actual load present. Load is 1.00 too high for lvs master and for both master and slave it's 2.00 too high. Fix need to be backported to get load low again. http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=89eaeb09ba01632511f69ce8e14c8d2abd2dbe9e Version-Release number of selected component (if applicable): kernel-2.6.18-8.1.6.el5 How reproducible: Always Steps to Reproduce: 1. start lvs sync master with command # ipvsadm --start-daemon master -mcast-interface eth1 --syncid 0 Actual Results: Average load goes to 1.00 Expected Results: Average load should be 0.00 because there was no actual load Additional info:
Created attachment 161726 [details] Proposed patch
*** Bug 247614 has been marked as a duplicate of this bug. ***
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
in 2.6.18-58.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5
confirmed fix is in the -92.el5 kernel
An advisory 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-2008-0314.html