Check your /etc/system parameters for shared memory settings.
Installation Guide for UNIX ( http://support.veritas.com/docs/279261 )
◆ For Solaris systems:
There are several kernel-tunable parameters, such as Message Queue, Semaphore, and Shared Memory Parameters, that can affect NetBackup performance. Adjusting these values may prevent your system performance from slowing down or even reaching a deadlock state.For additional information such as parameter definitions and examples, refer to the NetBackup Tuning Guide for UNIX on the VERITAS Support Web site by entering this tuning guide title in the Search field.
◆ Message Queue parameters: It can be necessary to increase the system�s message queue resources to avoid having NetBackup daemons hang.
For example, you may need to make the following changes to the /etc/system file:
set msgsys:msginfo_msgmap=512
set msgsys:msginfo_msgmax=8192
set msgsys:msginfo_msgmnb=65536
set msgsys:msginfo_msgmni=256
set msgsys:msginfo_msgssz=16
set msgsys:msginfo_msgtql=512
set msgsys:msginfo_msgseg=8192
Reboot the system.
◆ Semaphore parameters: On UNIX systems, errors may occur on systems that do not have enough semaphores allocated. System requirements vary; thus, no absolute recommendations can be made. However, the following changes to the /etc/system file should be sufficient for an average system:
set semsys:seminfo_semmap=64
set semsys:seminfo_semmni=1024
set semsys:seminfo_semmns=1024
set semsys:seminfo_semmnu=1024
set semsys:seminfo_semmsl=300
set semsys:seminfo_semopm=32
set semsys:seminfo_semume=64
You must reboot the system.
◆ To avoid potential shared memory problems, the default buffer size for disk backups has been increased to 256K with this release. If you are performing multiple copies of disk and tape, the default buffer size should, at a minimum, equal the tape buffer size.
If you encounter a system could not allocate enough shared memory error, you should refer to your vendor documentation for instructions on how to increase the amount of shared memory on your system. For Solaris platforms, you can make the following changes to the /etc/systemfile to obtain a sufficient amount of memory.
set shmsys:shminfo_shmmax=16777216
set shmsys:shminfo_shmmin=1
set shmsys:shminfo_shmmni=220
set shmsys:shminfo_shmseg=100
Note that shminfo_shmminmust be less than or equal to 100.
After making these changes, you must reboot using the boot -r command.
