From c06eec15d5816236c11e35b35e444f62f37b6ef6 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Tue, 19 Jul 2016 17:19:58 +0200 Subject: 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 --- src/login/logind.conf.in | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/login/logind.conf.in') diff --git a/src/login/logind.conf.in b/src/login/logind.conf.in index 32c0844cb6..6f720b7708 100644 --- a/src/login/logind.conf.in +++ b/src/login/logind.conf.in @@ -34,4 +34,4 @@ #RemoveIPC=yes #InhibitorsMax=8192 #SessionsMax=8192 -#UserTasksMax=12288 +#UserTasksMax=33% -- cgit v1.2.3-54-g00ecf