On Mon 16-07-18 17:53:42, Marinko Catovic wrote: > I can provide further data now, monitoring vmstat: > > https://pastebin.com/j0dMGBe4 .. 1 day later, 600MB/13GB in use, 35GB free > https://pastebin.com/N011kYyd .. 1 day later, 300MB/10GB in use, 40GB free, > performance becomes even worse > > the issue raises up again, I would have to drop caches by now to restore > normal usage for another day or two. > > Afaik there should be no reason at all to not have the buffers/cache fill > up the entire memory, isn't that true? > There is to my knowledge almost no O_DIRECT involved, also as mentioned > before: when dropping caches > the buffers/cache usage would eat up all RAM within the hour as usual for > 1-2 days until it starts to go crazy again. > > As mentioned, the usage oscillates up and down instead of up until all RAM > is consumed. > > Please tell me if there is anything else I can do to help investigate this. Do you have periodic /proc/vmstat snapshots I have asked before? -- Michal Hocko SUSE Labs
