Re: [RFC v4 00/20] Speculative page faults

From: Michal Hocko
Date: Fri Jun 09 2017 - 12:35:32 EST


On Fri 09-06-17 17:25:51, Laurent Dufour wrote:
[...]
> Thanks Michal for your feedback.
>
> I mostly focused on this database workload since this is the one where
> we hit the mmap_sem bottleneck when running on big node. On my usual
> victim node, I checked for basic usage like kernel build time, but I
> agree that's clearly not enough.
>
> I try to find details about the 'kbench' you mentioned, but I didn't get
> any valid entry.
> Would you please point me on this or any other bench tool you think will
> be useful here ?

Sorry I meant kernbech (aka parallel kernel build). Other highly threaded
workloads doing a lot of page faults and address space modification
would be good to see as well. I wish I could give you much more
comprehensive list but I am not very good at benchmarks.

--
Michal Hocko
SUSE Labs