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Solaris™ Internals: Core Kernel Components by Richard McDougall, Jim Mauro

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A.2. System V IPC - Shared Memory Parameters

Table A-1 describes shared memory parameters. For more information, refer to “System V Shared Memory” .

Table A-1. System V IPC - Shared Memory
Parameter Default Category Description / Notes
shmmax 1048576 Limit System V IPC shared memory. Maximum shared memory segment size, in bytes.
shmmin 1 Limit System V IPC shared memory. Minimum shared memory segment size, in bytes.
shmmni 100 Limit System V IPC shared memory. Maximum number of shared memory segments, sys temwide.
shmseg 6 Limit System V IPC shared memory. Maximum number of shared segments, per process.
segspt_minfree 5% of available memory Limit Number of pages of physical memory not available for allocation as ISM shared seg ments. Default value ...

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