mirror of https://github.com/mkerrisk/man-pages
semget.2: Note default value for SEMMNI and SEMMSL
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -268,15 +268,25 @@ The following limits on semaphore set resources affect the
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call:
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call:
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.TP
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.TP
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.B SEMMNI
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.B SEMMNI
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System-wide limit on the number of semaphore sets: policy dependent
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System-wide limit on the number of semaphore sets.
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(on Linux, this limit can be read and modified via the fourth field of
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On Linux systems before version 3.19,
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.IR /proc/sys/kernel/sem ).
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the default value for this limit was 128.
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Since Linux 3.19,
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.\" commit e843e7d2c88b7db107a86bd2c7145dc715c058f4
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the default value is 32,000.
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On Linux, this limit can be read and modified via the fourth field of
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.IR /proc/sys/kernel/sem .
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.\" This /proc file is not available in Linux 2.2 and earlier -- MTK
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.\" This /proc file is not available in Linux 2.2 and earlier -- MTK
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.TP
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.TP
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.B SEMMSL
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.B SEMMSL
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Maximum number of semaphores per semaphore ID: implementation dependent
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Maximum number of semaphores per semaphore ID.
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(on Linux, this limit can be read and modified via the first field of
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On Linux systems before version 3.19,
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.IR /proc/sys/kernel/sem ).
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the default value for this limit was 250.
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Since Linux 3.19,
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.\" commit e843e7d2c88b7db107a86bd2c7145dc715c058f4
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the default value is 32,000.
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On Linux, this limit can be read and modified via the first field of
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.IR /proc/sys/kernel/sem .
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.TP
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.TP
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.B SEMMNS
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.B SEMMNS
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System-wide limit on the number of semaphores: policy dependent
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System-wide limit on the number of semaphores: policy dependent
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