On Fri, Feb 8, 2013 at 6:46 PM, Wido den Hollander <wido@xxxxxxxxx> wrote: > Hi, > > Has anybody tried this yet? > > Running into the memory leaks during scrubbing[0] I started thinking about a > way to limit OSDs to a specific amount of memory. > > A machine has 32GB of memory, 4 OSDs, so you might want to limit each OSD to > 8GB so it can't take the whole machine down and would only kill itself. > > I think I'll give it a try on a couple of machines, but I just wanted to see > if anybody has tried this already or sees any downsides to this? > Yep, it works fine, although I`d recommend to take a look to an oom-delay patch to handle oom situations inside cg more nicely. And of course you`ll pay for memory cg usage by some percents of overall node performance. > We use cgroups in the CloudStack project (through libvirt) to prevent that a > memory leak in one KVM proces can take down a whole hypervisor, it works > pretty well there. > > Suggestions or comments? > > Wido > > [0]: http://tracker.ceph.com/issues/3883 > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
