From: Piotr Szymaniak <szarpaj-TbOm9Ca2r9GrDJvtcaxF/A@public.gmane.org>
To: linux-nilfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: Strange "flush" process bahaviour
Date: Tue, 13 Nov 2012 16:28:56 +0100 [thread overview]
Message-ID: <20121113152856.GP25100@wloczykij> (raw)
In-Reply-To: <50A159BC.9060600-3TRaYzfGuuI@public.gmane.org>
[-- Attachment #1.1: Type: text/plain, Size: 912 bytes --]
On Tue, Nov 13, 2012 at 12:19:08AM +0400, fwdnilfsml.to.11df-2pMamKoQTv4@public.gmane.org wrote:
> Hello!
> Some time ago I've noticed, that "flush" kernel process associated with
> device running nilfs2 filesystem, generate huge amount of IO activity
> (using 100% CPU time). "iotop" utility show speeds about 5-15 GB\S on
> that "flush" process, but no actual disk activity happens.
> This condition lasts about 1-2 minutes, and then it stops for some time
> (usually 10-20 minutes).
I can confirm this (but never bothered to check what caused it). But I
saw some huge load (few days ago) on 1 CPU core that was stopped
immediately after runnig "sync". This could be the same as mentioned
here.
And I just checked that machine and it eats my CPU. ps ax attached.
Piotr Szymaniak.
--
- You know nothing about woman!
- Of course not, I'm a man, so how could I know?
-- Berserk
[-- Attachment #1.2: ps.out --]
[-- Type: text/plain, Size: 6974 bytes --]
PID TTY STAT TIME COMMAND
1 ? Ss 0:00 init [3]
2 ? S 0:00 [kthreadd]
3 ? S 0:00 [ksoftirqd/0]
4 ? S 0:10 [kworker/0:0]
5 ? S< 0:00 [kworker/0:0H]
7 ? S< 0:00 [kworker/u:0H]
8 ? S 0:00 [migration/0]
9 ? S 0:00 [migration/1]
11 ? S< 0:00 [kworker/1:0H]
12 ? S 0:00 [ksoftirqd/1]
13 ? S< 0:00 [khelper]
14 ? S 0:00 [kdevtmpfs]
149 ? S 0:00 [bdi-default]
151 ? S< 0:00 [kblockd]
274 ? S< 0:00 [ata_sff]
281 ? S< 0:00 [md]
397 ? S 0:00 [kswapd0]
398 ? S 0:00 [fsnotify_mark]
400 ? S< 0:00 [crypto]
441 ? S< 0:00 [ttm_swap]
472 ? S 0:00 [scsi_eh_0]
475 ? S 0:00 [scsi_eh_1]
478 ? S 0:00 [scsi_eh_2]
481 ? S 0:00 [scsi_eh_3]
484 ? S 0:00 [scsi_eh_4]
487 ? S 0:00 [scsi_eh_5]
491 ? S 0:00 [kworker/u:3]
492 ? S 0:00 [kworker/u:4]
508 ? S< 0:00 [kpsmoused]
522 ? S< 0:00 [deferwq]
567 ? S 0:00 [md5_raid1]
573 ? S 0:00 [md1_raid1]
577 ? S 0:00 [md0_raid1]
693 ? Ss 0:00 /usr/lib/systemd/systemd-udevd --daemon
757 ? S 0:00 [scsi_eh_6]
758 ? S 0:00 [scsi_eh_7]
760 ? S 0:00 [khubd]
767 ? S< 0:00 [kworker/0:1H]
793 ? S< 0:00 [kworker/1:1H]
1030 ? S< 0:00 [iprt]
1106 ? S< 0:00 [hci0]
1107 ? S< 0:00 [kworker/u:1H]
1130 ? S 0:02 [segctord]
1193 ? S 0:00 [jbd2/md5-8]
1194 ? S< 0:00 [ext4-dio-unwrit]
1195 ? S< 0:00 [loop0]
1202 ? Ss 0:00 /usr/sbin/mount.ntfs-3g /dev/sdd1 /mnt/ce -o rw,locale=pl_PL.utf8
1205 ? Ss 0:00 /usr/sbin/mount.ntfs-3g /dev/sdd5 /mnt/de -o rw,locale=pl_PL.utf8
1208 ? Ss 0:00 /usr/sbin/mount.ntfs-3g /dev/sde1 /mnt/ef -o rw,locale=pl_PL.utf8
1607 ? Ss 0:00 /usr/bin/dbus-daemon --system
1621 ? Ss 0:00 metalog [MASTER]
1622 ? S 0:00 metalog [KERNEL]
1637 ? Ssl 0:00 /usr/sbin/console-kit-daemon
1712 ? Sl 0:01 /usr/lib/polkit-1/polkitd --no-debug
1920 ? Ss 0:00 /usr/bin/kdm
1924 ? R 111:40 [flush-8:0]
1926 tty7 Ss+ 8:59 /usr/bin/X -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-c2i4Cb
1950 ? S 0:00 -:0
1973 ? SNs 0:00 /usr/bin/distccd --daemon --pid-file /var/run/distccd/distccd.pid --port 3632 --log-file /var/log/distccd.log --log-level critical --allow 192.168.1.1 --allow 10.0.0.0/24 -N 15
1975 ? SN 0:00 /usr/bin/distccd --daemon --pid-file /var/run/distccd/distccd.pid --port 3632 --log-file /var/log/distccd.log --log-level critical --allow 192.168.1.1 --allow 10.0.0.0/24 -N 15
2025 ? Ss 0:00 /usr/sbin/ntpd -p /var/run/ntpd.pid
2109 ? Ss 0:00 //usr/libexec/postfix/master
2114 ? S 0:00 qmgr -l -t fifo -u
2125 ? Ss 0:01 /usr/sbin/privoxy --pidfile /var/run/privoxy.pid --user privoxy.privoxy /etc/privoxy/config
2126 ? SN 0:00 /usr/bin/distccd --daemon --pid-file /var/run/distccd/distccd.pid --port 3632 --log-file /var/log/distccd.log --log-level critical --allow 192.168.1.1 --allow 10.0.0.0/24 -N 15
2140 ? SN 0:00 /usr/bin/distccd --daemon --pid-file /var/run/distccd/distccd.pid --port 3632 --log-file /var/log/distccd.log --log-level critical --allow 192.168.1.1 --allow 10.0.0.0/24 -N 15
2141 ? SN 0:00 /usr/bin/distccd --daemon --pid-file /var/run/distccd/distccd.pid --port 3632 --log-file /var/log/distccd.log --log-level critical --allow 192.168.1.1 --allow 10.0.0.0/24 -N 15
2143 ? S 0:00 /usr/sbin/smartd -p /var/run/smartd.pid
2159 ? Ss 0:00 /usr/sbin/sshd
2175 ? Ss 0:00 /sbin/nilfs_cleanerd -c /etc/nilfs_cleanerd_rootfs.conf /dev/disk/by-uuid/1aa9e6fb-cf7d-45bd-bbfb-08110a8840b7
2183 tty1 Ss+ 0:00 /sbin/agetty 38400 tty1 linux
2184 tty2 Ss+ 0:00 /sbin/agetty 38400 tty2 linux
2185 tty3 Ss+ 0:00 /sbin/agetty 38400 tty3 linux
2186 tty4 Ss+ 0:00 /sbin/agetty 38400 tty4 linux
2187 tty5 Ss+ 0:00 /sbin/agetty 38400 tty5 linux
2188 tty6 Ss+ 0:00 /sbin/agetty 38400 tty6 linux
2198 ? Ss 0:00 /bin/sh /usr/bin/startkde
2210 ? S 0:00 /usr/bin/dbus-launch --sh-syntax --exit-with-session
2211 ? Ss 0:00 /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
2260 ? Ss 0:00 kdeinit4: kdeinit4 Running...
2261 ? S 0:00 kdeinit4: klauncher [kdeinit] --fd=8
2263 ? Sl 0:01 kdeinit4: kded4 [kdeinit]
2265 ? S 0:00 /usr/libexec/gam_server
2269 ? S 0:00 kdeinit4: kglobalaccel [kdeinit]
2273 ? Sl 0:00 /usr/libexec/upowerd
2294 ? Sl 0:02 /usr/libexec/udisks-daemon
2299 ? S 0:00 kwrapper4 ksmserver
2301 ? S 0:00 udisks-daemon: not polling any devices
2302 ? Sl 0:00 kdeinit4: ksmserver [kdeinit]
2323 ? Sl 1:53 kwin -session 10e6cf737a000133274663900000025370000_1352712750_234757
2327 ? S 0:00 /usr/bin/kactivitymanagerd
2342 ? Sl 0:00 /usr/bin/knotify4
2365 ? Sl 4:05 kdeinit4: plasma-desktop [kdeinit]
2370 ? S 0:00 /usr/bin/kuiserver
2385 ? Sl 0:01 kdeinit4: krunner [kdeinit]
2391 ? Sl 0:00 kdeinit4: kmix [kdeinit] -session 10e6cf737a000133274664200000025370007_1352712749_218942
2396 ? Sl 7:28 /usr/lib/opera/opera -session 10e6cf737a000135271066800000023000009_1352712749_219369 -sd /usr/share/opera/ -pd /home/foobar/.opera/
2403 ? S 0:00 kdeinit4: klipper [kdeinit]
2404 ? Sl 0:00 /usr/lib/kde4/libexec/polkit-kde-authentication-agent-1
2406 ? S 0:02 /usr/bin/urxvt
2408 pts/1 Ss 0:00 -bash
2429 pts/1 S+ 0:00 ssh wloczykij
4342 ? S 0:00 [flush-9:5]
4354 ? Sl 0:26 /usr/lib/opera/pluginwrapper/operapluginwrapper-native -multiproc 2,0.1.659,10,75,97 -logfolder /home/foobar/.opera/logs/ -type native
4432 ? S 0:00 pickup -l -t fifo -u
4806 ? S 0:00 [kworker/0:1]
5112 ? S 0:00 [kworker/1:0]
5171 ? S 0:01 [kworker/1:1]
5206 ? Ss 0:00 sshd: foobar [priv]
5215 ? S 0:00 sshd: foobar@pts/2
5216 pts/2 Ss 0:00 -bash
5235 pts/2 R+ 0:00 ps ax
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
next prev parent reply other threads:[~2012-11-13 15:28 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-12 20:19 Strange "flush" process bahaviour fwdnilfsml.to.11df-2pMamKoQTv4
[not found] ` <50A159BC.9060600-3TRaYzfGuuI@public.gmane.org>
2012-11-13 6:13 ` Vyacheslav Dubeyko
2012-11-13 13:04 ` Strange "flush" process bahaviour (fwdnilfsml: message 2 of 20) Александр
[not found] ` <50A24564.7000704-3TRaYzfGuuI@public.gmane.org>
2012-11-13 13:41 ` Strange "flush" process bahaviour Vyacheslav Dubeyko
2012-11-13 14:01 ` fwdnilfsml.to.11df-2pMamKoQTv4
2012-11-15 22:58 ` fwdnilfsml.to.11df-2pMamKoQTv4
[not found] ` <50A5737C.2040805-3TRaYzfGuuI@public.gmane.org>
2012-11-16 3:13 ` Ryusuke Konishi
[not found] ` <201211160313.AA04185-ZdTO5nnmHvkOizVVqyxoihMFgDP4sedm@public.gmane.org>
2012-11-16 15:02 ` fwdnilfsml.to.11df-2pMamKoQTv4
[not found] ` <50A65588.3000205-3TRaYzfGuuI@public.gmane.org>
2012-11-17 1:27 ` Ryusuke Konishi
[not found] ` <CAKFNMomO6ebYkXk=A9H2Wieswvogt6dj16Otj0u74M4aHOOPBg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-11-27 15:19 ` Piotr Szymaniak
2012-11-27 17:43 ` Vyacheslav Dubeyko
[not found] ` <295B3FE7-A44E-4D57-9A6A-B725EF1BA9EB-yeENwD64cLxBDgjK7y7TUQ@public.gmane.org>
2012-11-28 14:21 ` Piotr Szymaniak
2012-11-28 14:39 ` Vyacheslav Dubeyko
2012-11-28 20:59 ` Piotr Szymaniak
2012-11-29 7:00 ` Vyacheslav Dubeyko
2013-03-28 12:07 ` Piotr Szymaniak
2013-03-28 19:22 ` Vyacheslav Dubeyko
[not found] ` <E24177B1-2EF0-4274-BD13-4642E3663D08-yeENwD64cLxBDgjK7y7TUQ@public.gmane.org>
2013-03-29 7:42 ` Piotr Szymaniak
2013-03-29 8:15 ` Vyacheslav Dubeyko
2013-03-29 10:37 ` Piotr Szymaniak
2013-03-29 11:29 ` Vyacheslav Dubeyko
2013-03-29 13:57 ` Piotr Szymaniak
2013-03-31 11:14 ` Vyacheslav Dubeyko
[not found] ` <1D751B59-8E60-4D32-80CA-734BD25EE12C-yeENwD64cLxBDgjK7y7TUQ@public.gmane.org>
2013-03-31 13:26 ` Piotr Szymaniak
2013-04-01 6:06 ` Vyacheslav Dubeyko
2013-01-08 13:22 ` Vyacheslav Dubeyko
2012-11-13 15:28 ` Piotr Szymaniak [this message]
2012-11-13 18:24 ` Vyacheslav Dubeyko
[not found] ` <6B9E40B0-90F8-4130-9798-87253FEDDA78-yeENwD64cLxBDgjK7y7TUQ@public.gmane.org>
2012-11-13 17:49 ` fwdnilfsml.to.11df-2pMamKoQTv4
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=20121113152856.GP25100@wloczykij \
--to=szarpaj-tbom9ca2r9grdjvtcaxf/a@public.gmane.org \
--cc=linux-nilfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
/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.