On Mon 01-08-16 12:35:51, Ralf-Peter Rohbeck wrote: > On 01.08.2016 12:26, Michal Hocko wrote: [...] > > the amount of dirty pages is much smaller as well as the anonymous > > memory. The biggest portion seems to be in the page cache. The memory > > The page cache will always be full if I'm writing at full steam to multiple > drives, no? Yes, the memory full of page cache is not unusual. The large portion of that memory being dirty/writeback can be a problem. That is why we have a dirty memory throttling which slows down (throttles) writers to keep the amount reasonable. What is your dirty throttling setup? $ grep . /proc/sys/vm/dirty* and what is your storage setup? -- 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>