Add detail information for threads-max. The checks for minimum and maximum values exist since kernel 4.1. https://lkml.org/lkml/2015/3/15/96 Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx> --- man5/proc.5 | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/man5/proc.5 b/man5/proc.5 index bb648d4..83f30af 100644 --- a/man5/proc.5 +++ b/man5/proc.5 @@ -4265,8 +4265,22 @@ this is the fifth kernel built from this source base and the date following it indicates the time the kernel was built. .TP .IR /proc/sys/kernel/threads-max " (since Linux 2.3.11)" +.\" The following is based on Documentation/sysctl/kernel.txt This file specifies the system-wide limit on the number of threads (tasks) that can be created on the system. + +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 +.B FUTEX_TID_MASK +(0x3fffffff). +If a value outside of this range is written to threads-max an error +.B 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. .TP .IR /proc/sys/kernel/zero-paged " (PowerPC only) " This file -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
