Red Hat Bugzilla – Bug 247614
ipvs_syncmaster / ipvs_syncbackup
Last modified: 2007-11-30 17:07:45 EST
Description of problem: Load on the machine running ipvs_syncmaster/backup daemon increases by 1 even if it's otherwise idle. Version-Release number of selected component (if applicable): kernel-2.6.18-8.1.6.el5 How reproducible: allways Steps to Reproduce: 1. set up ipvs loadbalancer 2. run: ipvsadm --start-daemon backup --mcast-interface eth0 --syncid 150 3. load slowly increases (on idle machine to 1), top reports 100% idle 4. run: ipvsadm --stop-daemon backup 5. load slowly decreses to "normal' state, eg. 0 Actual results: After starting the ipvs daemon, the load is slowly increasing. On idle machine to 1.00 -1.20). Top at the same time reports 100% idle time. Expected results: No load increase. Additional info: According to my question to keepalived development mailing list http://sourceforge.net/mailarchive/forum.php?thread_name=f54c1fdb0707100234t74a288d7ta2a35b0a6c91a5cf%40mail.gmail.com&forum_name=keepalived-devel the problem is a known bug in ip_vs_sync.c, fixed in cca 2.6.19 in November last year. The behaviour was in fact observer on CentOS5/x86_64, but to my best knowledge it should also affect RHEL5 ;-)
It seems that https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=245715 which I haven't discover before is reporting the same problem. Any news on this issue?
(In reply to comment #1) > It seems that https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=245715 which > I haven't discover before is reporting the same problem. Any news on this issue? Looks like the patch has been posted internally for review, but doubtful that it'll make 5.1, since we're already quite late in the development cycle. Should easily make 5.2 though. *** This bug has been marked as a duplicate of 245715 ***