From: Borislav Petkov <bp@alien8.de>
To: X86 ML <x86@kernel.org>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>,
Andy Lutomirski <luto@amacapital.net>,
LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Paul Mackerras <paulus@samba.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>
Subject: Re: [PATCH v2 00/15] x86, alternatives: Instruction padding and more robust JMPs
Date: Thu, 26 Feb 2015 19:13:38 +0100 [thread overview]
Message-ID: <20150226181338.GF3314@pd.tnic> (raw)
In-Reply-To: <1424776497-3180-1-git-send-email-bp@alien8.de>
Hi all,
So this alternatives patchset breaks perf bench mem, here are a couple
of patches ontop, you guys tell me whether it makes sense. I wanted to
make it run all memset/memcpy routines so here are a couple of patches
which do this:
./perf bench mem memset -l 20MB -r all
# Running 'mem/memset' benchmark:
Routine default (Default memset() provided by glibc)
# Copying 20MB Bytes ...
1.136000 GB/Sec
6.026304 GB/Sec (with prefault)
Routine x86-64-unrolled (unrolled memset() in arch/x86/lib/memset_64.S)
# Copying 20MB Bytes ...
5.333493 GB/Sec
5.633473 GB/Sec (with prefault)
Routine x86-64-stosq (movsq-based memset() in arch/x86/lib/memset_64.S)
# Copying 20MB Bytes ...
5.828484 GB/Sec
5.851183 GB/Sec (with prefault)
Routine x86-64-stosb (movsb-based memset() in arch/x86/lib/memset_64.S)
# Copying 20MB Bytes ...
5.553384 GB/Sec
5.956465 GB/Sec (with prefault)
This way you can see all results by executing one command only with "-r
all".
Patches coming as a reply to this message.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
next prev parent reply other threads:[~2015-02-26 18:14 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-24 11:14 [PATCH v2 00/15] x86, alternatives: Instruction padding and more robust JMPs Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 01/15] x86/lib/copy_user_64.S: Remove FIX_ALIGNMENT define Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 02/15] x86/alternatives: Cleanup DPRINTK macro Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 03/15] x86/alternatives: Add instruction padding Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 04/15] x86/alternatives: Make JMPs more robust Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 05/15] x86/alternatives: Use optimized NOPs for padding Borislav Petkov
2015-03-04 6:43 ` Ingo Molnar
2015-03-04 8:42 ` Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 06/15] x86/lib/copy_page_64.S: Use generic ALTERNATIVE macro Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 07/15] x86/lib/copy_user_64.S: Convert to ALTERNATIVE_2 Borislav Petkov
2015-03-04 6:25 ` Ingo Molnar
2015-03-04 7:13 ` Ingo Molnar
2015-03-04 9:06 ` Borislav Petkov
2015-03-05 0:34 ` Ingo Molnar
2015-03-05 8:23 ` Borislav Petkov
2015-03-04 9:00 ` Borislav Petkov
2015-03-05 0:32 ` Ingo Molnar
2015-03-05 8:35 ` Borislav Petkov
2015-03-05 9:34 ` Ingo Molnar
2015-03-05 9:46 ` Ingo Molnar
2015-02-24 11:14 ` [PATCH v2 08/15] x86/smap: Use ALTERNATIVE macro Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 09/15] x86/entry_32: Convert X86_INVD_BUG to " Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 10/15] x86/lib/clear_page_64.S: Convert to ALTERNATIVE_2 macro Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 11/15] x86/asm: Use alternative_2() in rdtsc_barrier() Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 12/15] x86/asm: Cleanup prefetch primitives Borislav Petkov
2015-03-04 6:48 ` Ingo Molnar
2015-03-04 9:08 ` Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 13/15] x86/lib/memset_64.S: Convert to ALTERNATIVE_2 macro Borislav Petkov
2015-02-24 11:14 ` [PATCH v2 14/15] x86/lib/memmove_64.S: Convert memmove() to ALTERNATIVE macro Borislav Petkov
2015-03-04 7:19 ` Ingo Molnar
2015-02-24 11:14 ` [PATCH v2 15/15] x86/lib/memcpy_64.S: Convert memcpy to ALTERNATIVE_2 macro Borislav Petkov
2015-03-04 7:26 ` Ingo Molnar
2015-03-04 13:58 ` Borislav Petkov
2015-03-05 0:26 ` Ingo Molnar
2015-03-05 8:37 ` Borislav Petkov
2015-02-24 20:25 ` [PATCH v2 00/15] x86, alternatives: Instruction padding and more robust JMPs Andy Lutomirski
2015-02-26 18:13 ` Borislav Petkov [this message]
2015-02-26 18:16 ` [PATCH 1/3] perf/bench: Fix mem* routines usage after alternatives change Borislav Petkov
2015-02-26 18:16 ` [PATCH 2/3] perf/bench: Carve out mem routine benchmarking Borislav Petkov
2015-02-26 18:16 ` [PATCH 3/3] perf/bench: Add -r all so that you can run all mem* routines Borislav Petkov
2015-03-04 7:30 ` Ingo Molnar
2015-03-02 14:51 ` [PATCH v2 00/15] x86, alternatives: Instruction padding and more robust JMPs Hitoshi Mitake
2015-03-02 16:27 ` Borislav Petkov
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