Re: [PATCH 6/6] x86: mm: set TLB flush tunable to sane value (33)

[Rik van Riel]

On 04/21/2014 02:24 PM, Dave Hansen wrote:
> From: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
> 
> 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@xxxxxxxxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

-- 
All rights reversed
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/