[스크랩] 커널 파라미터 on Solaris 10

 

http://pic.dhe.ibm.com/infocenter/synhelp/v7m2r0/index.jsp?topic=%2Fcom.ibm.rational.synergy.admin.doc%2Ftopics%2Fs_c_ag_kern_paramtr_solaris.html

 

Kernel parameters on Solaris 10

On Oracle Solaris 10, all System V IPC facilities are either automatically configured or can be controlled by resource controls.

The following kernel parameters are removed or commented out from /etc/system.

semsys:seminfo_semmap
semsys:seminfo_semmns
semsys:seminfo_semmnu
semsys:seminfo_semume
shmsys:shminfo_shmmin
shmsys:shminfo_shmseg

The following obsolete IPC tunables are replaced by their resource controls with the new default values:

semsys:seminfo_semmsl
semsys:seminfo_semmni
shmsys:shminfo_shmmax
shmsys:shminfo_shmmni

The default value for the resource control names related to above four IPC tunables on Solaris 10 are:

process.max-sem-nsems     512
project.max-sem-ids       128
project.max-shm-memory    1/4 of physical memory
project.max-shm-ids       128

The project.max-shm-memory resource control limits the total amount of shared memory of one project. Previously, the shmsys:shminfo_shmmax parameter limited the size of a single shared memory segment.

On systems that have zones enabled, zone-wide resource controls are specified in the zone configuration. See the rctladm(1m) man page for more information about available resource controls.

If you have problems creating and starting multiple Informix® servers on the same Solaris 10 host and you receive share memory create errors, try adjusting default project value of the project.max-shm-memory kernel parameter.

• Display the current value of project.max-shm-memory set to the project and system wide:

  # prctl -n project.max-shm-memory -i project default

  Informix is running under the default project.

• Display the values of all the resource controls for a specific Informix process:

  # prctl <oninit pid>

• Change the setting for project.max-shm-memory to 64 GB for the project default without a system reboot:

  # prctl -n project.max-shm-memory -r -v 64gb -i project default

  An alternative is to use the projmod command to modify the attribute value for project.max-shm-memory in /etc/project, a local source of project information file:

  # projmod -a -K 'project.max-shm-memory=(priv,64GB,deny)' default

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