Some people compact memory in cron jobs with: echo 1 > /proc/sys/vm/ compact_memory to defragment the ram. Try this on a sacrified server first :)
On Thu, Jan 26, 2017 at 6:36 AM, Benjamin Roth <benjamin.r...@jaumo.com> wrote: > Hi there, > > We installed 2 new nodes these days. They run on ubuntu (Ubuntu 16.04.1 > LTS) with kernel 4.4.0-59-generic. On these nodes (and only on these) CS > gets killed by the kernel due to OOM. It seems very strange to me because, > CS only takes roughly 20GB (out of 128GB), most of RAM is allocated to page > cache. > > Top looks typically like this: > KiB Mem : 13191691+total, 1974964 free, 20278184 used, 10966376+buff/cache > KiB Swap: 0 total, 0 free, 0 used. 11051503+avail Mem > > This is what kern.log says: > https://gist.github.com/brstgt/0f1aa6afb558a56d1cadce958db46cf9 > > Has anyone encountered sth like this before? > > -- > Benjamin Roth > Prokurist > > Jaumo GmbH · www.jaumo.com > Wehrstraße 46 · 73035 Göppingen · Germany > Phone +49 7161 304880-6 <+49%207161%203048806> · Fax +49 7161 304880-1 > <+49%207161%203048801> > AG Ulm · HRB 731058 · Managing Director: Jens Kammerer >
