[SOLARIS]如何设置共享内存的大小

andysun

我这里/etc/system里面设了:
set shmsys:shminfo_shmmax=64000000

我想设为64G,可是重起后,共享内存没有变化呀?


* IPC Semaphores
*
    10        semaphore identifiers (SEMMNI)
    60        semaphores in system (SEMMNS)
    30        undo structures in system (SEMMNU)
    25        max semaphores per id (SEMMSL)
    10        max operations per semop call (SEMOPM)
    10        max undo entries per process (SEMUME)
32767        semaphore maximum value (SEMVMX)
16384        adjust on exit max value (SEMAEM)
*
* IPC Shared Memory
*
   8388608        max shared memory segment size (SHMMAX)
   100        shared memory identifiers (SHMMNI)
*
* Time Sharing Scheduler Tunables
*
60        maximum time sharing user priority (TSMAXUPRI)
SYS        system class name (SYS_NAME)

bloomit

try
#modload /kernel/sys/shmsys

recheck with
#sysdef -i

bloomit

最初由 andysun 发布
[B]我这里/etc/system里面设了:
set shmsys:shminfo_shmmax=64000000

我想设为64G,可是重起后,共享内存没有变化呀?

......
   8388608        max shared memory segment size (SHMMAX)

[/B]

Oh,you have made a mistake.That\'s rings a bell. System V Shared Memory tunable \"shmsys:shminfo_shmmax\" parameter using the unit of \"[B]byte[/B]\".64000000 there really represent the value of 64M, not 64G. 8388608 is the default value of shmsys:shminfo_shmmax. In fact , your setting really not take effort

So, check your /var/adm/message to see if there are some log info record there relate to kernel setting.

andysun

最初由 bloomit 发布
[B]try
#modload /kernel/sys/shmsys

recheck with
#sysdef -i [/B]

thank you 板主大大,用了modload后起作用了,还有我上面说错了,是64M .

thank you again, have a good day.

lazyoracle

shared memory module or other driver/module is not loaded into memory unless some application needs it. I guess you received the default value before Oracle was started.

prada_gu

设得太小了，最大值应和物理内存相当