From: Davidlohr Bueso <davidlohr@hp.com>
To: Dave Hansen <dave@sr71.net>
Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
ak@linux.intel.com, kirill.shutemov@linux.intel.com,
mgorman@suse.de, alex.shi@linaro.org, x86@kernel.org,
linux-mm@kvack.org, dave.hansen@linux.intel.com
Subject: Re: [PATCH 6/7] x86: mm: set TLB flush tunable to sane value
Date: Thu, 06 Mar 2014 17:55:04 -0800 [thread overview]
Message-ID: <1394157304.2555.21.camel@buesod1.americas.hpqcorp.net> (raw)
In-Reply-To: <20140306004529.5510B23D@viggo.jf.intel.com>
On Wed, 2014-03-05 at 16:45 -0800, Dave Hansen wrote:
> From: Dave Hansen <dave.hansen@linux.intel.com>
>
> 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:
It would be interesting to see similar data for opposite workloads with
more random access patterns. That's normally when things start getting
fun in the tlb world.
Thanks,
Davidlohr
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next prev parent reply other threads:[~2014-03-07 1:55 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-06 0:45 [PATCH 0/7] x86: rework tlb range flushing code Dave Hansen
2014-03-06 0:45 ` [PATCH 1/7] x86: mm: clean up tlb " Dave Hansen
2014-03-07 0:16 ` Davidlohr Bueso
2014-03-07 0:51 ` Davidlohr Bueso
2014-03-07 0:57 ` Eric Boxer
2014-03-06 0:45 ` [PATCH 2/7] x86: mm: rip out complicated, out-of-date, buggy TLB flushing Dave Hansen
2014-03-06 0:45 ` [PATCH 3/7] x86: mm: fix missed global TLB flush stat Dave Hansen
2014-03-06 0:45 ` [PATCH 4/7] x86: mm: trace tlb flushes Dave Hansen
2014-03-06 0:45 ` [PATCH 5/7] x86: mm: new tunable for single vs full TLB flush Dave Hansen
2014-03-07 1:37 ` Davidlohr Bueso
2014-03-07 17:19 ` Dave Hansen
2014-03-06 0:45 ` [PATCH 6/7] x86: mm: set TLB flush tunable to sane value Dave Hansen
2014-03-07 1:55 ` Davidlohr Bueso [this message]
2014-03-07 17:15 ` Dave Hansen
2014-03-08 0:28 ` Davidlohr Bueso
2014-03-06 0:45 ` [PATCH 7/7] big time hack: instrument flush times Dave Hansen
2014-03-07 0:15 ` [PATCH 0/7] x86: rework tlb range flushing code Davidlohr Bueso
2014-03-10 17:11 Dave Hansen
2014-03-10 17:11 ` [PATCH 6/7] x86: mm: set TLB flush tunable to sane value Dave Hansen
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