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.h | 1 + 1 file changed, 1 insertion(+) (limited to 'src/login/logind.h') diff --git a/src/login/logind.h b/src/login/logind.h index 90431eb4b0..086fa1eeb5 100644 --- a/src/login/logind.h +++ b/src/login/logind.h @@ -187,6 +187,7 @@ const struct ConfigPerfItem* logind_gperf_lookup(const char *key, unsigned lengt int manager_set_lid_switch_ignore(Manager *m, usec_t until); int config_parse_tmpfs_size(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata); +int config_parse_user_tasks_max(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata); int manager_get_session_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Session **ret); int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret); -- cgit v1.2.3-54-g00ecf