On 2017-04-19 14:14:54 -0700, Michael Malis wrote:
> > Could you also get a profile using perf record -g? The strace isn't
> > telling us all that much.
>
> I've attached the perf.data file from `perf record -g -p
> <backend-pid>`. I'm not that familiar with perf so if there is more
> information you need let me know. This was on Ubuntu 16.04
The profile seems to confirm that this is largely due to cache misses.
Greetings,
Andres Freund