Replatform Debian 6 => CentOS 6.4 - major performance drop
Hey, I wonder if anyone can help, I've first of all hit this bug: Search bugzilla for: 2554 and have had to revert to an earlier OpenVZ kernel, but my containers since switching from Debian 6 to CentOS have started requiring large amounts of CPU. The graph attached explains it better: To the left is Debian To the right is the host redone with CentOS The guest contain blue is Debian also - is there a performance overhead when virtualising Debian on CentOS? Can anyone else give an indication as to why the contain effectively needs twice the resources since the migration. I would desperately like to stay on CentOS to get the upstream updates as Debian is seriously lacking, but the performance is ab-missal and on production people are noticing the performance drop! Any suggestions would be greatly appreciated. Currently using - 2.6.32-042stab053.5 Have tried using - 2.6.32-042stab077.3 It would appear the system is busy with user requests - but a top within the system seems to indicate, it's not the container making the system incredibly busy: Thanks, Keith