But maybe I'm wrong, I don't know if cfs_quota_us value apply globally on all cpus , or individually on each cpu.
----- Mail original ----- De: "aderumier" <aderum...@odiso.com> À: "dietmar" <diet...@proxmox.com> Cc: "pve-devel" <pve-devel@pve.proxmox.com> Envoyé: Samedi 30 Mai 2015 18:01:54 Objet: Re: [pve-devel] qemu-server : cgroups implementation through systemd-run >>yes, I do not want to do that. I think it does not really makes sense to >>restrict cpuset for >>containers if we can restrict overall cpu usage using cpulimit? I think it depend if application running inside container can do multithreading. for example, you have a physical serveur with 20cores. you can to assign 2cpus. so 10%. that mean that container will have 20cores running at 10%. If an application in container is monothreaded (1 php script for example), I'll use 10%speed of 1core. Now, same config with settings 2cpu set. 1 monothreaded application, will use 100% of 1core. So 10x faster than previously That's an huge difference. ----- Mail original ----- De: "dietmar" <diet...@proxmox.com> À: "aderumier" <aderum...@odiso.com> Cc: "pve-devel" <pve-devel@pve.proxmox.com> Envoyé: Samedi 30 Mai 2015 12:49:19 Objet: Re: [pve-devel] qemu-server : cgroups implementation through systemd-run > >>You think I should call it 'cpulimit' instead of 'cpus'? > > I mean, if you go in a container, do a "top", you'll always see the full > number of cpus of the host. > > in openvz : > cfs_quota_us = cpulimit. > cpus = number of cores assign in a container. > > > It's possible to really fix the number of cpus inside the container with > cpu.cpuset. > (The only problem is that we need to specify cpuids we want to assign, so > it's > not easy to have a good auto loadbalacing with multiple containers) Yes, I do not want to do that. I think it does not really makes sense to restrict cpuset for containers if we can restrict overall cpu usage using cpulimit? _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
