On Sun 25-09-16 22:48:23, Lorenzo Stoakes wrote: > On Mon, Sep 19, 2016 at 10:53:48AM +0200, Michal Hocko wrote: > > On Mon 19-09-16 09:42:37, Lorenzo Stoakes wrote: > > > On Mon, Sep 19, 2016 at 10:32:15AM +0200, Michal Hocko wrote: > > > > > > > > so this is the same thing as in Linus case. All the zones are hitting > > > > min wmark so the should_compact_retry() gave up. As mentioned in other > > > > email [1] this is inherent limitation of the workaround. Your system is > > > > swapless but there is a lot of the reclaimable page cache so Vlastimil's > > > > patches should help. > > > > > > I will experiment with a linux-next kernel and see if the problem > > > recurs. I've attempted to see if there is a way to manually reproduce > > > on the mainline kernel by performing workloads that triggered the > > > OOM (loading google sheets tabs, compiling a kernel, playing a video > > > on youtube), but to no avail - it seems the system needs to be > > > sufficiently fragmented first before it'll trigger. > > > > > > Given that's the case, I'll just have to try using the linux-next > > > kernel and if you don't hear from me you can assume it did not repro > > > again :) > > > > OK, fair deal ;) > > Actually, I'll break the deal :) I've been running workloads similar to previous > weeks when I encountered the issue - including kernel builds, video playing, > lotsa tabs, etc. and also tried to intentionally eat up a bit of RAM from > time-to-time and have not seen a single OOM, so it looks like this is sorted it > for my system, notwithstanding Murphy's law. Thanks for the feedback. Your testing is highly appreciated! I guess Andrew can put your Tested-by for the latest Vlastimil patches to credit your effort. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>