Messages in this thread | | | Date | Tue, 22 Apr 2014 17:33:53 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH 6/6] x86: mm: set TLB flush tunable to sane value (33) |
| |
On 04/21/2014 02:24 PM, Dave Hansen wrote: > From: Dave Hansen <dave.hansen@linux.intel.com> > > This has been run through Intel's LKP tests across a wide range > of modern sytems and workloads and it wasn't shown to make a > measurable performance difference positive or negative. > > Now that we have some shiny new tracepoints, we can actually > figure out what the heck is going on. > > During a kernel compile, 60% of the flush_tlb_mm_range() calls > are for a single page. It breaks down like this:
> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Rik van Riel <riel@redhat.com>
-- All rights reversed
| |