On Mon 01-08-16 12:35:51, Ralf-Peter Rohbeck wrote:

On 01.08.2016 12:26, Michal Hocko wrote:

[...]

quoted

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

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