And you certainly cannot report on memory consumption relying on OpenVZ fake memory numbers.
On Tue, May 24, 2011 at 9:50 AM, Tony Zakula <[email protected]> wrote: > Was there any info on how OpenVZ was setup or how many other > containers were running on the machine, Do we know what the load was > on the machine at each stage of the tests? We really do not know > anything. The web servers were not even setup the same. The hosting > outfit could see a system spike and automatically kick in a limit that > we do not know about. I do that all the time. That is a common > practice. If you do not control the system, you cannot do a valid > benchmark. > > On Tue, May 24, 2011 at 9:39 AM, Cliff Wells <[email protected]> wrote: >> On Tue, 2011-05-24 at 09:25 -0500, Tony Zakula wrote: >>> I am not complaining about OpenVZ. I deploy servers on a regular >>> basis using OpenVZ. I also deploy using KVM, and others. There is a >>> massive difference between OpenVZ and KVM in implementation, system >>> stability, etc. They are entirely different animals. You cannot >>> discount the hypervisor. The hypervisor can make or break your >>> application depending on how you're application is structured. For >>> instance, Java apps run great on KVM hypervisors, but really poor if >>> at all on OpenVZ unless you tune the OpenVZ instance to meet your Java >>> apps needs. The reason for that is the way Java handles memory. >>> Threads is another big issue hypervisors. To say that the hypervisor >>> has no effect on application performance is not accurate at all. >> >> So are you suggesting no benchmark is ever valid unless it is run on >> every hypervisor available as well as on the bare metal? Clearly every >> benchmark has defined parameters, and in this case OpenVZ was one of >> those parameters. >> >> So long as the benchmark is defined as "Nginx vs Cherokee under OpenVZ" >> then it's a perfectly valid benchmark. >> >> Cliff >> >> > _______________________________________________ Cherokee mailing list [email protected] http://lists.octality.com/listinfo/cherokee
