From: Michael <michael@rw23.de>
To: Mikael Abrahamsson <swmike@swm.pp.se>
Cc: linux-raid@vger.kernel.org
Subject: Re: Slow(?) raid5 to raid6 reshape speed
Date: Tue, 16 Feb 2010 13:18:19 +0100 [thread overview]
Message-ID: <afb99b76feb4fad30a4f43fb46ea3e4d@rw23.de> (raw)
In-Reply-To: <alpine.DEB.1.10.1002161251570.4986@uplift.swm.pp.se>
here is the output. i have watched it
avg-cpu: %user %nice %system %iowait %steal %idle
3.87 0.00 2.23 8.52 0.00 85.38
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz
avgqu-sz await svctm %util
sda 859.60 857.60 74.40 21.20 14192.00 7030.40 221.99
0.98 10.33 6.35 60.72
sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00
sdd 831.40 840.60 100.40 43.20 14198.40 7070.40 148.11
0.50 3.50 1.73 24.86
sdc 831.20 836.40 100.60 44.20 14198.40 7044.80 146.71
0.51 3.52 1.81 26.14
sde 0.00 0.00 0.00 40.40 0.00 19673.60 486.97
8.72 215.79 4.46 18.00
sdf 854.60 865.40 77.20 17.20 14174.40 7060.80 224.95
1.28 13.61 4.95 46.72
sdg 0.00 854.80 0.20 27.80 1.60 7060.80 252.23
0.69 24.60 11.17 31.28
a minute later (just to state another one):
avg-cpu: %user %nice %system %iowait %steal %idle
3.15 0.00 2.16 10.28 0.00 84.41
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz
avgqu-sz await svctm %util
sda 811.60 813.80 92.20 16.60 16446.40 6643.20 212.22
0.97 9.05 5.54 60.32
sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00
sdd 785.00 790.60 117.60 40.60 16436.80 6649.60 145.93
0.47 2.98 1.50 23.66
sdc 785.80 791.20 116.80 40.00 16436.80 6649.60 147.23
0.49 3.14 1.57 24.68
sde 0.00 0.00 0.00 45.20 0.00 21844.80 483.29
10.51 197.05 4.38 19.80
sdf 809.00 815.60 94.80 14.60 16446.40 6641.60 211.04
1.26 11.47 4.27 46.74
sdg 0.00 808.00 0.00 23.40 0.00 6651.20 284.24
0.64 27.41 12.33 28.86
so this is not 100%, right?
On Tue, 16 Feb 2010 12:53:27 +0100 (CET), Mikael Abrahamsson
<swmike@swm.pp.se> wrote:
> On Tue, 16 Feb 2010, Michael wrote:
>
>> i think the kernel's raid io is not visible at iotop or iam wrong?
>
> Use "iostat -x 5" to see what is going on, personally I used
> "sync_speed_min" so my drives were around 50-80% busy because for some
> reason it tried to use much lower speed a otherwise.
>
> If your drives are already at 100% then there is nothing more to do than
> to wait it out...
next prev parent reply other threads:[~2010-02-16 12:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-16 11:50 Slow(?) raid5 to raid6 reshape speed Michael
2010-02-16 11:53 ` Mikael Abrahamsson
2010-02-16 12:18 ` Michael [this message]
[not found] ` <alpine.DEB.1.10.1002161334170.4986@uplift.swm.pp.se>
2010-02-16 13:31 ` Michael
2010-02-16 17:34 ` Bill Davidsen
2010-02-16 19:11 ` Michael
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=afb99b76feb4fad30a4f43fb46ea3e4d@rw23.de \
--to=michael@rw23.de \
--cc=linux-raid@vger.kernel.org \
--cc=swmike@swm.pp.se \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox