From: NeilBrown <neilb@suse.de>
To: "Mathias Burén" <mathias.buren@gmail.com>
Cc: Linux-RAID <linux-raid@vger.kernel.org>
Subject: Re: SSSE6 / RAID6
Date: Wed, 23 May 2012 10:20:51 +1000 [thread overview]
Message-ID: <20120523102051.071bf55b@notabene.brown> (raw)
In-Reply-To: <CADNH=7HByQyQy=Bbn5AjO=nz8437QOCjGbkVhiUAKwp61_is0A@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1915 bytes --]
On Tue, 22 May 2012 22:27:42 +0100 Mathias Burén <mathias.buren@gmail.com>
wrote:
> Hi list,
>
> I just compiled 3.4 for my little Atom box. Is there any way I can
> confirm if the RAID6 check is using SSSE6 instructions?
SSSE6 ? What is that? Some other name for SSSE3 ??
The SSSE3 RAID6 code was too late for 3.4. It is in -next and should appear
in 3.5-rc1.
NeilBrown
>
> $ zcat /proc/config.gz |grep -i -P '(raid|sss)'
> CONFIG_RAID_ATTRS=y
> CONFIG_MD_RAID0=m
> CONFIG_MD_RAID1=m
> CONFIG_MD_RAID10=m
> CONFIG_MD_RAID456=y
> # CONFIG_MULTICORE_RAID456 is not set
> CONFIG_DM_RAID=m
> CONFIG_ASYNC_RAID6_TEST=m
> CONFIG_ASYNC_RAID6_RECOV=y
> CONFIG_CRYPTO_SHA1_SSSE3=y
> CONFIG_RAID6_PQ=y
>
> $ cat /proc/cpuinfo |grep ssse
> flags : fpu vme de tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat
> clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
> constant_tsc arch_perfmon pebs bts nopl aperfmperf pni dtes64 monitor
> ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dts
>
> $ cat /proc/mdstat
> Personalities : [raid6] [raid5] [raid4]
> md0 : active raid6 sdf1[5] sdh1[8] sdg1[0] sde1[7] sdc1[3] sdd1[4] sdb1[9]
> 9751756800 blocks super 1.2 level 6, 64k chunk, algorithm 2
> [7/7] [UUUUUUU]
> [>....................] check = 0.7% (15577860/1950351360)
> finish=1918.9min speed=16804K/sec
>
> unused devices: <none>
>
> $ ps aux |grep -i -P '(md|raid)'
> root 27 0.0 0.0 0 0 ? S< 21:52 0:00 [md]
> root 342 15.5 0.0 0 0 ? R 21:52 5:23 [md0_raid6]
> root 3937 65.2 0.0 0 0 ? R 22:13 9:11 [md0_resync]
>
> Thanks,
> Mathias
> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 828 bytes --]
prev parent reply other threads:[~2012-05-23 0:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-22 21:27 SSSE6 / RAID6 Mathias Burén
2012-05-22 22:18 ` H. Peter Anvin
2012-05-22 23:37 ` Mathias Burén
2012-05-23 0:26 ` Jim Kukunas
2012-05-23 0:30 ` Mathias Burén
2012-05-23 0:20 ` NeilBrown [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120523102051.071bf55b@notabene.brown \
--to=neilb@suse.de \
--cc=linux-raid@vger.kernel.org \
--cc=mathias.buren@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.