From: Stefan Priebe <s.priebe@profihost.ag>
To: Mark Nelson <mark.nelson@inktank.com>
Cc: Stefan Majer <stefan.majer@gmail.com>,
"ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
Subject: Re: poor OSD performance using kernel 3.4
Date: Wed, 30 May 2012 20:42:39 +0200 [thread overview]
Message-ID: <4FC66A1F.1080407@profihost.ag> (raw)
In-Reply-To: <4FC62BB0.1020003@inktank.com>
Hi Mark,
> Specifically, the gap in the movie where there is no write activity
> around second 30 correlates in the blktrace results with one of these
> stalls:
>> 8,16 0 0 29.548567957 0 m N cfq schedule dispatch
>> 8,16 2 2185 34.548923918 2688 A W 2192 + 8 <- (8,17) 144
>
> As to why this is happening, I don't know yet. I'll have more later.
Should i try the bisect thing?
Stefan
next prev parent reply other threads:[~2012-05-30 18:42 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-24 14:10 poor OSD performance using kernel 3.4 Stefan Priebe - Profihost AG
2012-05-24 14:57 ` Mark Nelson
[not found] ` <CAJCPpW+SKnnVUaDEAsCkKyZwMVrHCRJF2C8zqB4eORgwW5p=1Q@mail.gmail.com>
[not found] ` <4FBE7ABC.5020502@profihost.ag>
2012-05-24 18:53 ` Mark Nelson
2012-05-24 19:05 ` Stefan Priebe
2012-05-25 1:53 ` Mark Nelson
2012-05-25 8:19 ` Stefan Priebe - Profihost AG
2012-05-25 11:31 ` Stefan Priebe - Profihost AG
2012-05-25 12:10 ` Stefan Priebe - Profihost AG
2012-05-25 15:47 ` Alexandre DERUMIER
2012-05-27 9:11 ` Stefan Priebe - Profihost AG
2012-05-27 11:33 ` Alexandre DERUMIER
2012-05-27 18:57 ` Stefan Priebe
2012-05-28 5:37 ` Alexandre DERUMIER
2012-05-28 6:25 ` Stefan Priebe
2012-05-28 6:52 ` Alexandre DERUMIER
2012-05-28 19:48 ` Stefan Priebe
2012-05-29 3:54 ` Alexandre DERUMIER
2012-05-29 8:22 ` Stefan Priebe - Profihost AG
2012-05-29 13:01 ` Alexandre DERUMIER
2012-05-29 14:18 ` Stefan Priebe - Profihost AG
2012-05-29 9:46 ` Stefan Priebe - Profihost AG
2012-05-29 13:39 ` Yann Dupont
2012-05-29 14:43 ` Stefan Priebe - Profihost AG
2012-05-29 17:50 ` Mark Nelson
2012-05-29 19:50 ` Yann Dupont
2012-05-29 21:04 ` Stefan Priebe
2012-05-29 21:08 ` Stefan Priebe
2012-05-29 21:31 ` Yann Dupont
2012-05-29 21:34 ` Stefan Priebe
2012-05-29 21:45 ` Yann Dupont
2012-05-30 6:29 ` Stefan Priebe - Profihost AG
2012-05-29 21:41 ` Mark Nelson
2012-05-30 6:22 ` Stefan Priebe - Profihost AG
2012-05-30 7:20 ` building test cluster : missing /etc/ceph/client.admin.keyring, need help Alexandre DERUMIER
2012-05-30 7:25 ` Stefan Priebe - Profihost AG
2012-05-30 7:33 ` Alexandre DERUMIER
2012-05-30 7:47 ` Alexandre DERUMIER
2012-05-29 22:25 ` poor OSD performance using kernel 3.4 Mark Nelson
2012-05-30 6:33 ` Stefan Priebe - Profihost AG
[not found] ` <CADdPHGs9dpSh9Oyu+5yDhyYU=Et_-zF5MuYybBuuAN5DgR433A@mail.gmail.com>
2012-05-30 7:16 ` Stefan Priebe - Profihost AG
[not found] ` <CADdPHGuiJqZUCK-0qR_CrOo6GRhkjaCdkOhJ2boq3zD0_voTsA@mail.gmail.com>
2012-05-30 11:04 ` Stefan Priebe - Profihost AG
[not found] ` <CADdPHGuLAL5+hkzq0tigqu355DvPxkhE5sxBhOVZPj=EzDSVtA@mail.gmail.com>
2012-05-30 11:25 ` Stefan Priebe - Profihost AG
2012-05-30 12:17 ` Mark Nelson
2012-05-30 12:41 ` Stefan Priebe - Profihost AG
[not found] ` <CADdPHGsmr8Ht1pTWH1Oe8=NmAyM81SSdH+c_GV89D8ntfyUmgA@mail.gmail.com>
2012-05-30 13:19 ` Stefan Priebe - Profihost AG
[not found] ` <CADdPHGvxCmuViy+0==Vkdz_QjC1K+kD5kD1m7+0tYM2YDTtJbw@mail.gmail.com>
2012-05-30 13:54 ` Stefan Priebe - Profihost AG
[not found] ` <4FC63381.6090300@inktank.com>
2012-05-30 14:53 ` Stefan Priebe
2012-05-30 14:56 ` Mark Nelson
2012-05-30 18:26 ` Stefan Priebe
2012-05-30 19:41 ` Mark Nelson
2012-05-30 13:27 ` Mark Nelson
2012-05-30 13:51 ` Stefan Priebe - Profihost AG
2012-05-30 14:16 ` Mark Nelson
2012-05-30 18:42 ` Stefan Priebe [this message]
[not found] ` <CADdPHGuxa7TAyqXcXehb9WgKgkHwkybYTrj2oue_PKsiF+oR3A@mail.gmail.com>
2012-05-30 21:10 ` Stefan Priebe
[not found] ` <CADdPHGutEwoDc=Kcrqcx2ZMO=dqhuoT5iLoP-WxqD+e5ZUmBRA@mail.gmail.com>
2012-05-31 7:10 ` poor OSD performance using kernel 3.4 => problem found Stefan Priebe - Profihost AG
2012-05-31 7:30 ` Yehuda Sadeh
[not found] ` <CADdPHGtz9Jq624DMO6Dve2AcJ9vrnFHbyqRa+qheA+0-y4k++g@mail.gmail.com>
2012-05-31 12:31 ` Mark Nelson
2012-05-31 12:33 ` Stefan Priebe - Profihost AG
2012-05-31 13:21 ` Yann Dupont
2012-05-31 13:37 ` Stefan Priebe - Profihost AG
2012-05-31 13:45 ` Yann Dupont
2012-05-31 14:42 ` Yann Dupont
2012-05-31 15:32 ` Mark Nelson
2012-05-31 15:43 ` Yann Dupont
2012-05-31 16:14 ` Mark Nelson
2012-05-31 16:29 ` Sage Weil
2012-05-31 16:37 ` Yann Dupont
[not found] ` <CADdPHGv0YjxDQFnZML-55jDj7XxHxaxUZ_FeQ=ReKK6Rs7NNhw@mail.gmail.com>
2012-05-31 8:04 ` Stefan Priebe - Profihost AG
2012-05-31 8:09 ` Stefan Majer
2012-05-31 11:34 ` Stefan Priebe - Profihost AG
2012-05-31 12:18 ` Stefan Priebe - Profihost AG
2012-05-30 11:51 ` poor OSD performance using kernel 3.4 Mark Nelson
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=4FC66A1F.1080407@profihost.ag \
--to=s.priebe@profihost.ag \
--cc=ceph-devel@vger.kernel.org \
--cc=mark.nelson@inktank.com \
--cc=stefan.majer@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.