From: "H. Peter Anvin" <hpa@zytor.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>
Cc: Alex Shi <alex.shi@linaro.org>, Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Fengguang Wu <fengguang.wu@intel.com>, Linux-X86 <x86@kernel.org>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/4] Fix ebizzy performance regression due to X86 TLB range flush v2
Date: Fri, 13 Dec 2013 14:38:32 -0800 [thread overview]
Message-ID: <52AB8C68.1040305@zytor.com> (raw)
In-Reply-To: <CA+55aFyNAigQqBk07xLpf0nkhZ_x-QkBYG8otRzsqg_8A2eg-Q@mail.gmail.com>
On 12/13/2013 01:16 PM, Linus Torvalds wrote:
> On Fri, Dec 13, 2013 at 12:01 PM, Mel Gorman <mgorman@suse.de> wrote:
>>
>> ebizzy
>> 3.13.0-rc3 3.4.69 3.13.0-rc3 3.13.0-rc3
>> thread vanilla vanilla altershift-v2r1 nowalk-v2r7
>> Mean 1 7377.91 ( 0.00%) 6812.38 ( -7.67%) 7784.45 ( 5.51%) 7804.08 ( 5.78%)
>> Mean 2 8262.07 ( 0.00%) 8276.75 ( 0.18%) 9437.49 ( 14.23%) 9450.88 ( 14.39%)
>> Mean 3 7895.00 ( 0.00%) 8002.84 ( 1.37%) 8875.38 ( 12.42%) 8914.60 ( 12.91%)
>> Mean 4 7658.74 ( 0.00%) 7824.83 ( 2.17%) 8509.10 ( 11.10%) 8399.43 ( 9.67%)
>> Mean 5 7275.37 ( 0.00%) 7678.74 ( 5.54%) 8208.94 ( 12.83%) 8197.86 ( 12.68%)
>> Mean 6 6875.50 ( 0.00%) 7597.18 ( 10.50%) 7755.66 ( 12.80%) 7807.51 ( 13.56%)
>> Mean 7 6722.48 ( 0.00%) 7584.75 ( 12.83%) 7456.93 ( 10.93%) 7480.74 ( 11.28%)
>> Mean 8 6559.55 ( 0.00%) 7591.51 ( 15.73%) 6879.01 ( 4.87%) 6881.86 ( 4.91%)
>
> Hmm. Do you have any idea why 3.4.69 still seems to do better at
> higher thread counts?
>
> No complaints about this patch-series, just wondering..
>
It would be really great to get some performance numbers on something
other than ebizzy, though...
-hpa
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WARNING: multiple messages have this Message-ID (diff)
From: "H. Peter Anvin" <hpa@zytor.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>
Cc: Alex Shi <alex.shi@linaro.org>, Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Fengguang Wu <fengguang.wu@intel.com>, Linux-X86 <x86@kernel.org>,
Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/4] Fix ebizzy performance regression due to X86 TLB range flush v2
Date: Fri, 13 Dec 2013 14:38:32 -0800 [thread overview]
Message-ID: <52AB8C68.1040305@zytor.com> (raw)
In-Reply-To: <CA+55aFyNAigQqBk07xLpf0nkhZ_x-QkBYG8otRzsqg_8A2eg-Q@mail.gmail.com>
On 12/13/2013 01:16 PM, Linus Torvalds wrote:
> On Fri, Dec 13, 2013 at 12:01 PM, Mel Gorman <mgorman@suse.de> wrote:
>>
>> ebizzy
>> 3.13.0-rc3 3.4.69 3.13.0-rc3 3.13.0-rc3
>> thread vanilla vanilla altershift-v2r1 nowalk-v2r7
>> Mean 1 7377.91 ( 0.00%) 6812.38 ( -7.67%) 7784.45 ( 5.51%) 7804.08 ( 5.78%)
>> Mean 2 8262.07 ( 0.00%) 8276.75 ( 0.18%) 9437.49 ( 14.23%) 9450.88 ( 14.39%)
>> Mean 3 7895.00 ( 0.00%) 8002.84 ( 1.37%) 8875.38 ( 12.42%) 8914.60 ( 12.91%)
>> Mean 4 7658.74 ( 0.00%) 7824.83 ( 2.17%) 8509.10 ( 11.10%) 8399.43 ( 9.67%)
>> Mean 5 7275.37 ( 0.00%) 7678.74 ( 5.54%) 8208.94 ( 12.83%) 8197.86 ( 12.68%)
>> Mean 6 6875.50 ( 0.00%) 7597.18 ( 10.50%) 7755.66 ( 12.80%) 7807.51 ( 13.56%)
>> Mean 7 6722.48 ( 0.00%) 7584.75 ( 12.83%) 7456.93 ( 10.93%) 7480.74 ( 11.28%)
>> Mean 8 6559.55 ( 0.00%) 7591.51 ( 15.73%) 6879.01 ( 4.87%) 6881.86 ( 4.91%)
>
> Hmm. Do you have any idea why 3.4.69 still seems to do better at
> higher thread counts?
>
> No complaints about this patch-series, just wondering..
>
It would be really great to get some performance numbers on something
other than ebizzy, though...
-hpa
next prev parent reply other threads:[~2013-12-13 22:38 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-13 20:01 [PATCH 0/4] Fix ebizzy performance regression due to X86 TLB range flush v2 Mel Gorman
2013-12-13 20:01 ` Mel Gorman
2013-12-13 20:01 ` [PATCH 1/4] x86: mm: Clean up inconsistencies when flushing TLB ranges Mel Gorman
2013-12-13 20:01 ` Mel Gorman
2013-12-13 20:01 ` [PATCH 2/4] x86: mm: Account for TLB flushes only when debugging Mel Gorman
2013-12-13 20:01 ` Mel Gorman
2013-12-13 20:01 ` [PATCH 3/4] x86: mm: Change tlb_flushall_shift for IvyBridge Mel Gorman
2013-12-13 20:01 ` Mel Gorman
2013-12-13 20:01 ` [PATCH 4/4] x86: mm: Eliminate redundant page table walk during TLB range flushing Mel Gorman
2013-12-13 20:01 ` Mel Gorman
2013-12-13 21:16 ` [PATCH 0/4] Fix ebizzy performance regression due to X86 TLB range flush v2 Linus Torvalds
2013-12-13 21:16 ` Linus Torvalds
2013-12-13 22:38 ` H. Peter Anvin [this message]
2013-12-13 22:38 ` H. Peter Anvin
2013-12-16 10:39 ` Mel Gorman
2013-12-16 10:39 ` Mel Gorman
2013-12-16 17:17 ` Linus Torvalds
2013-12-16 17:17 ` Linus Torvalds
2013-12-17 9:55 ` Mel Gorman
2013-12-17 9:55 ` Mel Gorman
2013-12-15 15:55 ` Mel Gorman
2013-12-15 15:55 ` Mel Gorman
2013-12-15 16:17 ` Mel Gorman
2013-12-15 16:17 ` Mel Gorman
2013-12-15 18:34 ` Linus Torvalds
2013-12-15 18:34 ` Linus Torvalds
2013-12-16 11:16 ` Mel Gorman
2013-12-16 11:16 ` Mel Gorman
2013-12-16 10:24 ` Ingo Molnar
2013-12-16 10:24 ` Ingo Molnar
2013-12-16 12:59 ` Mel Gorman
2013-12-16 12:59 ` Mel Gorman
2013-12-16 13:44 ` Ingo Molnar
2013-12-16 13:44 ` Ingo Molnar
2013-12-17 9:21 ` Mel Gorman
2013-12-17 9:21 ` Mel Gorman
2013-12-17 9:26 ` Peter Zijlstra
2013-12-17 9:26 ` Peter Zijlstra
2013-12-17 11:00 ` Ingo Molnar
2013-12-17 11:00 ` Ingo Molnar
2013-12-17 14:32 ` Mel Gorman
2013-12-17 14:32 ` Mel Gorman
2013-12-17 14:42 ` Ingo Molnar
2013-12-17 14:42 ` Ingo Molnar
2013-12-17 17:54 ` Mel Gorman
2013-12-17 17:54 ` Mel Gorman
2013-12-18 10:24 ` Ingo Molnar
2013-12-18 10:24 ` Ingo Molnar
2013-12-19 14:24 ` Mel Gorman
2013-12-19 14:24 ` Mel Gorman
2013-12-19 16:49 ` Ingo Molnar
2013-12-19 16:49 ` Ingo Molnar
2013-12-20 11:13 ` Mel Gorman
2013-12-20 11:13 ` Mel Gorman
2013-12-20 11:18 ` Ingo Molnar
2013-12-20 11:18 ` Ingo Molnar
2013-12-20 12:00 ` Mel Gorman
2013-12-20 12:00 ` Mel Gorman
2013-12-20 12:20 ` Ingo Molnar
2013-12-20 12:20 ` Ingo Molnar
2013-12-20 13:55 ` Mel Gorman
2013-12-20 13:55 ` Mel Gorman
2013-12-18 10:32 ` [tip:sched/core] sched: Assign correct scheduling domain to ' sd_llc' tip-bot for Mel Gorman
2013-12-18 7:28 ` [PATCH 0/4] Fix ebizzy performance regression due to X86 TLB range flush v2 Fengguang Wu
2013-12-18 7:28 ` Fengguang Wu
2013-12-19 14:34 ` Mel Gorman
2013-12-19 14:34 ` Mel Gorman
2013-12-20 15:51 ` Fengguang Wu
2013-12-20 16:44 ` Mel Gorman
2013-12-20 16:44 ` Mel Gorman
2013-12-21 15:49 ` Fengguang Wu
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