Re: Bad rss-counter is back on 3.14-stable

From: Dave Jones
Date: Wed Jun 04 2014 - 18:23:11 EST

On Wed, Jun 04, 2014 at 12:35:45PM -0700, Brandon Philips wrote:
> On Wed, Jun 4, 2014 at 12:12 PM, Dave Jones <davej@xxxxxxxxxx> wrote:
> > Brandon, what kind of workload is that machine doing ? I wonder if I can
> > add something to trinity to make it provoke it.
> A really boring database workload (fsync() ~50ms) with a sloowww block
> device with btrfs. There are occasional CPU spikes due to expensive
> queries.
> How can I be more helpful in my workload description?

I feared it would be something like a database. Trying to replicate
things seen under those workloads always seems to be challenging,
in part due to the system specific setups they seem to have.

I wonder if any of the benchmarking apps we have do a realistic
representation of what modern databases do. It might be a fun project
to take something like that and extend it to do random queries.


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