freebsd系统中使用用squid，diskd方式出现的奇怪问题

石头玩儿

freebsd系统中使用用squid，diskd方式出现的奇怪问题
已修改内核配置文件（/boot/loader.conf）如下
options SYSVMSG # include support for message queues
options MSGMNB=8192 # max characters per message queue
options MSGMNI=40 # max number of message queue identifiers
options MSGSEG=512 # max number of message segments per queue
options MSGSSZ=64 # size of a message segment MUST be power of 2
options MSGTQL=2048 # max number of messages in the system
options SYSVSHM
options SHMSEG=16 # max shared mem segments per process
options SHMMNI=32 # max shared mem segments in the system
options SHMMAX=2097152 # max size of a shared mem segment
options SHMALL=4096 # max size of all shared memory (pages)

现在问题是squid经常down机并报
storeDiskdSend: msgsnd: (35) Resource temporarily unavailable
望高手予以指点，小弟在此先行谢过