* Bill Huey <[email protected]> wrote:
> > ISTR we still thought dcache scalability was a significant problem
> > last time anyone looked at it seriously - just never got fixed.
> > Dipankar?
>
> My lock stat stuff shows dcache to a be a problem under -rt as well.
> [...]
yeah, it shows up frequently, but it's hard to fix.
for a well-cached kernel rebuild on a system with lots of RAM and lots
of CPUs, files_lock is the leading lock. (because the dcache is mostly
populated already) files_lock is even more of a problem for workloads
that do lots of open()/close() [Apache comes to mind].
Ingo
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