diff options
| author | Heinrich Schuchardt | 2015-04-16 12:47:53 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2015-04-17 09:04:07 -0400 |
| commit | 0ec62afeb143a34ce78143cf442f879ef68382f7 (patch) | |
| tree | 20e5c2f675840a67cb3e70e514931a13e1bbe89a /Documentation/sysctl | |
| parent | 16db3d3f1170fb0efca652c9378ce7c5f5cb4232 (diff) | |
Doc/sysctl/kernel.txt: document threads-max
File /proc/sys/kernel/threads-max controls the maximum number of threads
that can be created using fork().
[akpm@linux-foundation.org: fix typo, per Guenter]
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/sysctl')
| -rw-r--r-- | Documentation/sysctl/kernel.txt | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index 99d7eb3a1416..c831001c45f1 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -872,6 +872,27 @@ can be ORed together: ============================================================== +threads-max + +This value controls the maximum number of threads that can be created +using fork(). + +During initialization the kernel sets this value such that even if the +maximum number of threads is created, the thread structures occupy only +a part (1/8th) of the available RAM pages. + +The minimum value that can be written to threads-max is 20. +The maximum value that can be written to threads-max is given by the +constant FUTEX_TID_MASK (0x3fffffff). +If a value outside of this range is written to threads-max an error +EINVAL occurs. + +The value written is checked against the available RAM pages. If the +thread structures would occupy too much (more than 1/8th) of the +available RAM pages threads-max is reduced accordingly. + +============================================================== + unknown_nmi_panic: The value in this file affects behavior of handling NMI. When the |