Why the niceness is not always taken into account ?

Tue Apr 16 11:38:50 EDT 2013

On the computer where I am testing, I have nothing related to
cgroups.

Here a 'ps aux' in case I am missing something.

USER PID %CPU
%MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 10652 836 ? Ss
avril09 0:03 init [2] 
root 2 0.0 0.0 0 0 ? S avril09 0:00
[kthreadd]
root 3 0.0 0.0 0 0 ? S avril09 0:07 [ksoftirqd/0]
root 5 0.0
0.0 0 0 ? S< avril09 0:00 [kworker/0:0H]
root 7 0.0 0.0 0 0 ? S< avril09
0:00 [kworker/u:0H]
root 8 0.0 0.0 0 0 ? S avril09 0:00
[migration/0]
root 9 0.0 0.0 0 0 ? S avril09 0:00 [rcu_bh]
root 10 0.0
0.0 0 0 ? S avril09 1:05 [rcu_sched]
root 11 0.0 0.0 0 0 ? S avril09
0:01 [watchdog/0]
root 12 0.0 0.0 0 0 ? S avril09 0:01 [watchdog/1]
root
13 0.0 0.0 0 0 ? S avril09 0:15 [ksoftirqd/1]
root 14 0.0 0.0 0 0 ? S
avril09 0:00 [migration/1]
root 16 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/1:0H]
root 17 0.0 0.0 0 0 ? S avril09 0:01 [watchdog/2]
root 18
0.0 0.0 0 0 ? S avril09 0:17 [ksoftirqd/2]
root 19 0.0 0.0 0 0 ? S
avril09 0:00 [migration/2]
root 21 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/2:0H]
root 22 0.0 0.0 0 0 ? S avril09 0:01 [watchdog/3]
root 23
0.0 0.0 0 0 ? S avril09 0:17 [ksoftirqd/3]
root 24 0.0 0.0 0 0 ? S
avril09 0:00 [migration/3]
root 26 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/3:0H]
root 27 0.0 0.0 0 0 ? S avril09 0:01 [watchdog/4]
root 28
0.0 0.0 0 0 ? S avril09 0:00 [ksoftirqd/4]
root 29 0.0 0.0 0 0 ? S
avril09 0:00 [migration/4]
root 30 0.0 0.0 0 0 ? S avril09 0:00
[kworker/4:0]
root 31 0.0 0.0 0 0 ? S< avril09 0:00 [kworker/4:0H]
root
32 0.0 0.0 0 0 ? S avril09 0:01 [watchdog/5]
root 33 0.0 0.0 0 0 ? S
avril09 0:08 [ksoftirqd/5]
root 34 0.0 0.0 0 0 ? S avril09 0:00
[migration/5]
root 36 0.0 0.0 0 0 ? S< avril09 0:00 [kworker/5:0H]
root
37 0.0 0.0 0 0 ? S avril09 0:01 [watchdog/6]
root 38 0.0 0.0 0 0 ? S
avril09 0:10 [ksoftirqd/6]
root 39 0.0 0.0 0 0 ? S avril09 0:00
[migration/6]
root 40 0.0 0.0 0 0 ? S avril09 0:00 [kworker/6:0]
root 41
0.0 0.0 0 0 ? S< avril09 0:00 [kworker/6:0H]
root 42 0.0 0.0 0 0 ? S
avril09 0:01 [watchdog/7]
root 43 0.0 0.0 0 0 ? S avril09 0:08
[ksoftirqd/7]
root 44 0.0 0.0 0 0 ? S avril09 0:00 [migration/7]
root 45
0.0 0.0 0 0 ? S avril09 0:00 [kworker/7:0]
root 46 0.0 0.0 0 0 ? S<
avril09 0:00 [kworker/7:0H]
root 47 0.0 0.0 0 0 ? S< avril09 0:00
[cpuset]
root 48 0.0 0.0 0 0 ? S< avril09 0:00 [khelper]
root 49 0.0 0.0
0 0 ? S avril09 0:00 [kdevtmpfs]
root 50 0.0 0.0 0 0 ? S< avril09 0:00
[netns]
root 51 0.0 0.0 0 0 ? S avril09 0:00 [bdi-default]
root 52 0.0
0.0 0 0 ? S< avril09 0:00 [kintegrityd]
root 53 0.0 0.0 0 0 ? S< avril09
0:00 [kblockd]
root 54 0.0 0.0 0 0 ? S avril09 0:31 [kworker/0:1]
root
55 0.0 0.0 0 0 ? S avril09 0:00 [khungtaskd]
root 56 0.0 0.0 0 0 ? S
avril09 0:00 [kswapd0]
root 57 0.0 0.0 0 0 ? SN avril09 0:00 [ksmd]
root
58 0.0 0.0 0 0 ? SN avril09 0:04 [khugepaged]
root 59 0.0 0.0 0 0 ? S
avril09 0:00 [fsnotify_mark]
root 60 0.0 0.0 0 0 ? S< avril09 0:00
[crypto]
root 64 0.0 0.0 0 0 ? S< avril09 0:00 [deferwq]
root 66 0.0 0.0
0 0 ? S avril09 0:00 [kworker/0:2]
root 67 0.0 0.0 0 0 ? S avril09 0:08
[kworker/5:1]
root 131 0.0 0.0 0 0 ? S avril09 0:00 [khubd]
root 202 0.0
0.0 0 0 ? S< avril09 0:00 [ata_sff]
root 206 0.0 0.0 0 0 ? S avril09
0:00 [scsi_eh_0]
root 207 0.0 0.0 0 0 ? S avril09 0:00 [scsi_eh_1]
root
208 0.0 0.0 0 0 ? S avril09 0:00 [scsi_eh_2]
root 209 0.0 0.0 0 0 ? S
avril09 0:00 [scsi_eh_3]
root 210 0.0 0.0 0 0 ? S avril09 0:00
[scsi_eh_4]
root 211 0.0 0.0 0 0 ? S avril09 0:00 [scsi_eh_5]
root 214
0.0 0.0 0 0 ? S avril09 0:00 [kworker/u:4]
root 215 0.0 0.0 0 0 ? S
avril09 0:00 [kworker/u:5]
root 218 0.0 0.0 0 0 ? S avril09 0:12
[kworker/1:1]
root 219 0.0 0.0 0 0 ? S avril09 0:08 [kworker/7:1]
root
226 0.0 0.0 0 0 ? S avril09 0:13 [kworker/3:1]
root 230 0.0 0.0 0 0 ? S
avril09 0:00 [kworker/5:2]
root 232 0.0 0.0 0 0 ? S< avril09 0:06
[kworker/0:1H]
root 241 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/5:1H]
root 247 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/4:1H]
root 251 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/1:1H]
root 252 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/6:1H]
root 253 0.0 0.0 0 0 ? S avril09 0:00 [kworker/2:1]
root
254 0.0 0.0 0 0 ? S avril09 0:08 [kjournald]
root 258 0.0 0.0 0 0 ? S
avril09 0:08 [kworker/6:1]
root 267 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/3:1H]
root 337 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/2:1H]
root 394 0.0 0.0 0 0 ? S< avril09 0:00
[kworker/7:1H]
root 402 0.0 0.0 21836 1784 ? Ss avril09 0:00 udevd
--daemon
root 583 0.0 0.0 0 0 ? S< avril09 0:00 [kpsmoused]
root 584 0.0
0.0 0 0 ? S avril09 0:00 [kworker/1:2]
root 691 0.0 0.0 0 0 ? S avril09
0:06 [kworker/4:2]
root 746 0.0 0.0 0 0 ? S< avril09 0:00
[kvm-irqfd-clean]
root 748 0.0 0.0 0 0 ? S< avril09 0:00
[hd-audio0]
root 772 0.0 0.0 96268 4048 ? Ss 17:28 0:00 sshd: lalexandre
[priv]
10084 777 0.0 0.0 96268 1892 ? S 17:28 0:00 sshd:
lalexandre at pts/1
10084 778 0.0 0.0 24008 4748 pts/1 Ss+ 17:28 0:00
-bash
root 953 0.0 0.0 0 0 ? S avril09 0:05 [flush-8:0]
root 1037 0.0
0.0 0 0 ? S 17:33 0:00 [flush-0:22]
root 1043 0.0 0.0 18900 1280 pts/4
R+ 17:35 0:00 ps aux
root 1687 0.0 0.0 0 0 ? S avril09 0:00
[kjournald]
root 1973 0.0 0.0 18972 940 ? Ss avril09 0:00 /sbin/rpcbind
-w
statd 2004 0.0 0.0 23344 1344 ? Ss avril09 0:00 /sbin/rpc.statd
root
2009 0.0 0.0 0 0 ? S< avril09 0:00 [rpciod]
root 2011 0.0 0.0 0 0 ? S<
avril09 0:00 [nfsiod]
root 2020 0.0 0.0 29500 696 ? Ss avril09 0:00
/usr/sbin/rpc.idmapd
root 2397 0.0 0.0 118444 1804 ? Sl avril09 0:06
/usr/sbin/rsyslogd -c5
root 2399 0.0 0.0 3936 80 ? Ss avril09 0:00
/usr/sbin/acpi_fakekeyd
daemon 2513 0.0 0.0 16672 148 ? Ss avril09 0:00
/usr/sbin/atd
root 2615 0.0 0.0 4248 832 ? Ss avril09 0:00
/usr/sbin/acpid
ntp 2656 0.0 0.0 41064 2404 ? Ss avril09 0:17
/usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 115:122
root 2894 0.0 0.0
61128 2016 ? Ssl avril09 0:06 /usr/sbin/automount --pid-file
/var/run/autofs.pid
102 2900 0.0 0.0 32816 1956 ? Ss avril09 0:00
/usr/bin/dbus-daemon --system
root 2951 0.0 0.0 120364 2752 ? Ss avril09
0:21 /usr/sbin/sssd -D -f
root 2961 0.0 0.0 149132 10352 ? SL avril09
1:57 /usr/lib/sssd/sssd/sssd_be --domain LDAP --debug-to-files
root 2963
0.0 0.0 104652 3452 ? S avril09 0:06 /usr/lib/sssd/sssd/sssd_nss
--debug-to-files
root 2964 0.0 0.0 104560 3432 ? S avril09 0:05
/usr/lib/sssd/sssd/sssd_pam --debug-to-files
root 2966 0.0 0.0 58108
3868 ? S avril09 0:02 /opt/cisco/vpn/bin/vpnagentd
avahi 2990 0.0 0.0
36660 2336 ? S avril09 1:34 avahi-daemon: running [auric.local]
avahi
2993 0.0 0.0 36108 468 ? S avril09 0:00 avahi-daemon: chroot helper
root
2994 0.0 0.0 156116 5264 ? Ssl avril09 0:01
/usr/sbin/NetworkManager
root 3091 0.0 0.0 134436 4536 ? Sl avril09 0:00
/usr/lib/policykit-1/polkitd --no-debug
root 3095 0.0 0.0 80868 3228 ? S
avril09 0:00 /usr/sbin/modem-manager
105 3161 0.0 0.0 46804 1264 ? Ss
avril09 0:00 /usr/sbin/exim4 -bd -q30m
root 3181 0.0 0.0 0 0 ? S<
avril09 0:00 [krfcommd]
root 3245 0.0 0.0 20408 1052 ? Ss avril09 0:00
/usr/sbin/cron
root 3284 0.0 0.0 77856 3488 ? Ss avril09 0:08
/usr/sbin/cupsd -C /etc/cups/cupsd.conf
colord 3286 0.0 0.0 150028 4580
? Sl avril09 0:00 /usr/lib/x86_64-linux-gnu/colord/colord
colord 3307
0.0 0.0 361500 10408 ? Sl avril09 0:00
/usr/lib/x86_64-linux-gnu/colord/colord-sane
root 3422 0.0 0.0 16256 936
tty1 Ss+ avril09 0:00 /sbin/getty 38400 tty1
root 3423 0.0 0.0 16256 944
tty2 Ss+ avril09 0:00 /sbin/getty 38400 tty2
root 3424 0.0 0.0 16256 936
tty3 Ss+ avril09 0:00 /sbin/getty 38400 tty3
root 3425 0.0 0.0 16256 932
tty4 Ss+ avril09 0:00 /sbin/getty 38400 tty4
root 3426 0.0 0.0 16256 944
tty5 Ss+ avril09 0:00 /sbin/getty 38400 tty5
root 3427 0.0 0.0 16256 932
tty6 Ss+ avril09 0:00 /sbin/getty 38400 tty6
root 3428 0.0 0.0 0 0 ? R
avril09 0:13 [kworker/2:2]
root 3434 0.0 0.0 0 0 ? S avril09 0:00
[kworker/3:2]
114 3445 0.0 0.0 32280 1176 ? Ss avril09 0:00
/usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7
--session
root 3449 0.0 0.0 129204 3324 ? Sl avril09 0:00
/usr/lib/accountsservice/accounts-daemon
root 3453 0.0 0.0 193108 4112 ?
Sl avril09 0:00 /usr/sbin/console-kit-daemon --no-daemon
114 3635 0.0
0.0 53664 2388 ? S avril09 0:00 /usr/lib/gvfs/gvfsd
rtkit 3683 0.0 0.0
105168 1332 ? SNl avril09 0:06 /usr/lib/rtkit/rtkit-daemon
114 3687 0.0
0.0 218500 3468 ? Sl avril09 0:00
/usr/lib/at-spi2-core/at-spi-bus-launcher
114 3691 0.0 0.0 32008 1604 ?
S avril09 0:00 /usr/bin/dbus-daemon
--config-file=/etc/at-spi2/accessibility.conf --nofork --print-address
3
root 3711 0.0 0.0 9960 3712 ? S avril09 0:00 /sbin/dhclient -d -4 -sf
/usr/lib/NetworkManager/nm-dhcp-client.action -pf
/var/run/dhclient-eth0.pid -lf
/var/lib/dhcp/dhclient-1912e92e-6ddc-
root 3792 0.0 0.0 0 0 ? S avril09
0:00 [nfsv4.0-svc]
root 3854 0.0 0.0 49852 1172 ? Ss avril09 0:00
/usr/sbin/sshd
root 5233 0.0 0.0 21832 1456 ? S avril09 0:00 udevd
--daemon
root 5234 0.0 0.0 21832 1444 ? S avril09 0:00 udevd
--daemon
root 20780 0.0 0.0 96268 4052 ? Ss avril12 0:00 sshd:
lalexandre [priv]
10084 20785 0.0 0.0 96268 1892 ? S avril12 0:00 sshd:
lalexandre at pts/3
10084 20786 0.0 0.0 23856 4480 pts/3 Ss avril12 0:00
-bash
root 20894 0.0 0.0 96268 4052 ? Ss avril12 0:00 sshd: lalexandre
[priv]
10084 20899 0.0 0.0 96404 1892 ? S avril12 0:00 sshd:
lalexandre at pts/4
10084 20900 0.0 0.0 23956 4696 pts/4 Ss avril12 0:00
-bash
root 21028 0.0 0.0 64908 2184 pts/4 S avril12 0:00 sudo bash
root
21029 0.0 0.0 19448 2208 pts/4 S avril12 0:00 bash
root 21044 0.0 0.0
64908 2200 pts/3 S avril12 0:00 sudo bash
root 21045 0.0 0.0 19448 2204
pts/3 S+ avril12 0:00 bash

Thank you 

Le 16.04.2013 13:03, Kristof
Provost a écrit : 

> On 2013-04-16 10:35:05 (+0200), Alexandre Laurent
<alexandre.laurent at uvsq.fr> wrote:
> 
>> My problem is that in some
cases it is not working at all. It works fine if I am running both
programs in the same instance of the terminal, or from a script (so,
same instance of interpreter). But this is not working if I am running
the instances in separate SSH session. When I say it is not working,
both instances will take 24s to run and the CPU usage is just shared
between the tasks.
> 
> Is it possible that you're running systemd or
something else which is
> configuring cgroups?
> 
> Regards,
> Kristof

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