Issue

在/proc/sys/kernel/shmall文件中，SHMALL参数被设置为16777216.可是跟ipcs -l的输出结果不同，下面是输出结果。
[root@test kernel]# ipcs -l

------ Shared Memory Limits --------
max number of segments = 8192
max seg size (kbytes) = 33554432
max total shared memory (kbytes) = 67108864
min seg size (bytes) = 1

------ Semaphore Limits --------
max number of arrays = 8192
max semaphores per array = 250
max semaphores system wide = 256000
max ops per semop call = 32
semaphore max value = 32767

------ Messages: Limits --------
max queues system wide = 31744
max size of message (bytes) = 65536
default max size of queue (bytes) = 65536