From: Borislav Petkov <bp@alien8.de>
To: "Elliott, Robert (Persistent Memory)" <elliott@hpe.com>
Cc: Dan Williams <dan.j.williams@intel.com>,
"Luck, Tony" <tony.luck@intel.com>,
linux-nvdimm <linux-nvdimm@ml01.01.org>, X86 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Linux MM <linux-mm@kvack.org>, Andy Lutomirski <luto@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks
Date: Tue, 15 Dec 2015 20:28:37 +0100 [thread overview]
Message-ID: <20151215192837.GL25973@pd.tnic> (raw)
In-Reply-To: <94D0CD8314A33A4D9D801C0FE68B40295BE9F290@G4W3202.americas.hpqcorp.net>
On Tue, Dec 15, 2015 at 07:19:58PM +0000, Elliott, Robert (Persistent Memory) wrote:
...
> Due to the historic long latency of storage devices,
> applications don't re-read from storage again; they
> save the results.
> So, the streaming-load instructions are beneficial:
That's the theory...
Do you also have some actual performance numbers where non-temporal
operations are better than the REP; MOVSB and *actually* show
improvements? And no microbenchmarks please.
Thanks.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
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next prev parent reply other threads:[~2015-12-15 19:28 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-11 19:13 [PATCHV2 0/3] Machine check recovery when kernel accesses poison Tony Luck
2015-12-10 21:58 ` [PATCHV2 1/3] x86, ras: Add new infrastructure for machine check fixup tables Tony Luck
2015-12-11 20:06 ` Andy Lutomirski
2015-12-11 21:01 ` Luck, Tony
2015-12-12 10:11 ` Borislav Petkov
2015-12-14 17:58 ` Ross Zwisler
2015-12-14 22:27 ` Borislav Petkov
2015-12-15 1:00 ` Luck, Tony
2015-12-15 9:46 ` Borislav Petkov
2015-12-15 10:44 ` Borislav Petkov
2015-12-11 0:14 ` [PATCHV2 2/3] x86, ras: Extend machine check recovery code to annotated ring0 areas Tony Luck
2015-12-11 20:08 ` Andy Lutomirski
2015-12-15 11:43 ` Borislav Petkov
2015-12-15 23:46 ` Luck, Tony
2015-12-11 0:21 ` [PATCHV2 3/3] x86, ras: Add mcsafe_memcpy() function to recover from machine checks Tony Luck
2015-12-11 20:09 ` Andy Lutomirski
2015-12-11 21:19 ` Luck, Tony
2015-12-11 21:32 ` Konrad Rzeszutek Wilk
2015-12-11 21:50 ` Andy Lutomirski
2015-12-11 22:17 ` Luck, Tony
2015-12-11 22:20 ` Dan Williams
2015-12-11 22:26 ` Andy Lutomirski
2015-12-11 22:35 ` Luck, Tony
2015-12-11 22:38 ` Andy Lutomirski
2015-12-11 22:45 ` Luck, Tony
2015-12-11 22:55 ` Andy Lutomirski
2015-12-14 8:36 ` Ingo Molnar
2015-12-14 19:46 ` Luck, Tony
2015-12-14 20:11 ` Andy Lutomirski
2015-12-15 13:11 ` Borislav Petkov
2015-12-15 17:45 ` Dan Williams
2015-12-15 17:53 ` Luck, Tony
2015-12-15 18:21 ` Borislav Petkov
2015-12-15 18:27 ` Dan Williams
2015-12-15 18:35 ` Dan Williams
2015-12-15 18:39 ` Borislav Petkov
2015-12-15 19:19 ` Elliott, Robert (Persistent Memory)
2015-12-15 19:28 ` Borislav Petkov [this message]
2015-12-15 20:25 ` Elliott, Robert (Persistent Memory)
2015-12-21 17:33 ` Borislav Petkov
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