Date: Sat, 13 Feb 2010 02:14:38 -0800 (PST) From: jaymax <jaymax36@gmail.com> To: freebsd-questions@freebsd.org Subject: resetting shmmax parameters Message-ID: <27573158.post@talk.nabble.com>
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Hello,
FreeBSD O/S 7.2 i386 1CPU AMD
Server memory
RAM memory
hw.physmem: 1060540416
# sysctl -a | grep shm
kern.ipc.shm_allow_removed: 0
kern.ipc.shm_use_phys: 0
kern.ipc.shmall: 8192
kern.ipc.shmseg: 128
kern.ipc.shmmni: 192
kern.ipc.shmmin: 1
kern.ipc.shmmax: 33554432
>From dmesg
# grep memory /var/run/dmesg.boot
real memory = 1073676288 (1023 MB)
avail memory = 1036972032 (988 MB)
# swapinfo
Device 1K-blocks Used Avail Capacity
/dev/ad0s1b 1536000 32 1535968 0%
/dev/ad1s1b 1048576 28 1048548 0%
/dev/ad4s1b 2072576 44 2072532 0%
Total 4657152 104 4657048 0%
program suggested parameters for shared memory
To reset the parameters:
vi /etc/sysconfigtab in order to add the lines
ipc:
shm-max=2147483647
sem-mni=128
What is a safe / comfortable shmmax to use?
Can I increase shmmax on the fly as in Linux or do I have to do reboot?
Thanks!
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