Use this information to understand parameters for HP-UX
11i platforms.
nfile: 5000
semmni: 3000
semmns: 3000
semmnu: 1400
shmmax: 4294967296
shmmni: 500
shmseg: 500
- The value of the kernel parameter semmnu must be set to at least the maximum number of open ipcshm connections, plus the number of semaphore undo structures required
by other processes in the system.
The value of semmnu is 2 - 4 K for larger systems.
- The value of the kernel parameter shmmax must be set to 4 GB or the maximum allowable on the system. Setting shmmax to a high value prevents the operating system from
creating multiple shared memory segments which can degrade performance.
- This server release is built to take advantage of
the Large File
Descriptor support provided by HP-UX,
which increases the number of simultaneous user connections per server
instance from 2000 to 60000.
To take advantage
of this feature, the following kernel parameters might be increased
depending on the application.
- maxfiles_lim - Maximum number of
files that can be opened by a process simultaneously.
- nfile - Maximum number of files
that can be opened system-wide.