On Wed, 2006-09-20 at 09:25 -0700, Christoph Lameter wrote: > On Tue, 19 Sep 2006, Rohit Seth wrote: > > > For example, a user can run a batch job like backup inside containers. > > This job if run unconstrained could step over most of the memory present > > in system thus impacting other workloads running on the system at that > > time. But when the same job is run inside containers then the backup > > job is run within container limits. > > I just saw this for the first time since linux-mm was not cced. We have > discussed a similar mechanism on linux-mm. > > We already have such a functionality in the kernel its called a cpuset. A
Christoph, There had been multiple discussions in the past (as recent as Aug 18, 2006), where we (Paul and CKRM/RG folks) have concluded that cpuset and resource management are orthogonal features. cpuset provides "resource isolation", and what we, the resource management guys want is work-conserving resource control. cpuset partitions resource and hence the resource that are assigned to a node is not available for other cpuset, which is not good for "resource management". chandra PS: Aug 18 link: http://marc.theaimsgroup.com/?l=linux- kernel&m=115593114408336&w=2 Feb 2005 thread: http://marc.theaimsgroup.com/?l=ckrm- tech&m=110790400330617&w=2 > container could be created simply by creating a fake node that then > allows constraining applications to this node. We already track the > types of pages per node. The statistics you want are already existing. > See /proc/zoneinfo and /sys/devices/system/node/node*/*. > > > We use the term container to indicate a structure against which we track > > and charge utilization of system resources like memory, tasks etc for a > > workload. Containers will allow system admins to customize the > > underlying platform for different applications based on their > > performance and HW resource utilization needs. Containers contain > > enough infrastructure to allow optimal resource utilization without > > bogging down rest of the kernel. A system admin should be able to > > create, manage and free containers easily. > > Right thats what cpusets do and it has been working fine for years. Maybe > Paul can help you if you find anything missing in the existing means to > control resources. > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys -- and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > ckrm-tech mailing list > https://lists.sourceforge.net/lists/listinfo/ckrm-tech -- ---------------------------------------------------------------------- Chandra Seetharaman | Be careful what you choose.... - [EMAIL PROTECTED] | .......you may get it. ---------------------------------------------------------------------- ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ ckrm-tech mailing list https://lists.sourceforge.net/lists/listinfo/ckrm-tech
