On Tue, Nov 13, 2012 at 12:19:08AM +0400, fwdnilfsml.to.11df@xxxxxxxx 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
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
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