diff options
| author | Lennart Poettering <lennart@poettering.net> | 2016-07-19 17:19:58 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2016-07-22 15:33:13 +0200 |
| commit | c06eec15d5816236c11e35b35e444f62f37b6ef6 (patch) | |
| tree | df56cc996e476aeff44fc01e4d32432fc9178051 /man | |
| parent | 84af7821b65ad11417ac2984717cf42a3655fcd7 (diff) | |
logind: change TasksMax= value for user logins to 33%
Let's change from a fixed value of 12288 tasks per user to a relative value of
33%, which with the kernel's default of 32768 translates to 10813. This is a
slight decrease of the limit, for no other reason than "33%" sounding like a nice
round number that is close enough to 12288 (which would translate to 37.5%).
(Well, it also has the nice effect of still leaving a bit of room in the PID
space if there are 3 cooperating evil users that try to consume all PIDs...
Also, I like my bikesheds blue).
Since the new value is taken relative, and machined's TasksMax= setting
defaults to 16384, 33% inside of containers is usually equivalent to 5406,
which should still be ample space.
To summarize:
| on the host | in the container
old default | 12288 | 12288
new default | 10813 | 5406
Diffstat (limited to 'man')
| -rw-r--r-- | man/logind.conf.xml | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/man/logind.conf.xml b/man/logind.conf.xml index fe92277a1f..adba5a4131 100644 --- a/man/logind.conf.xml +++ b/man/logind.conf.xml @@ -315,12 +315,11 @@ <varlistentry> <term><varname>UserTasksMax=</varname></term> - <listitem><para>Sets the maximum number of OS tasks each user - may run concurrently. This controls the - <varname>TasksMax=</varname> setting of the per-user slice - unit, see + <listitem><para>Sets the maximum number of OS tasks each user may run concurrently. This controls the + <varname>TasksMax=</varname> setting of the per-user slice unit, see <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry> - for details. Defaults to 12288 (12K).</para></listitem> + for details. Defaults to 33%, which equals 10813 with the kernel's defaults on the host, but might be smaller + in OS containers.</para></listitem> </varlistentry> <varlistentry> |