On 20.10.2012 15:11, Vladislav Prodan wrote:
FreeBSD 9.1-PRERELEASE #0: Wed Jul 25 01:40:56 EEST 2012
I have the server: 8 cores AMD, 16GB RAM, 4x3TB HDD in RAID10 for ZFS.
Sometime wheels fall off the server and the network.
Can this clean-up memory for ZFS cache?
I enclose a picture with the monitoring system at the time lags.
http://imageshack.us/a/img341/9643/memoryusage.png
http://imageshack.us/a/img22/6935/nginxclientstat.png
http://imageshack.us/a/img19/8817/realmemory.png
#cat /etc/sysctl.conf
kern.ipc.somaxconn=65535
Remove this. It doesn't do what you think it does.
kern.ipc.maxsockets=204800
net.inet.ip.portrange.first=1024
net.inet.ip.portrange.last=65535
kern.ipc.shmmax=67108864
kern.ipc.shmall=67108864
net.inet.tcp.rfc3465=0
Any particular reason why you turn this off?
net.graph.maxdgram=8388608
net.graph.recvspace=8388608
net.route.netisr_maxqlen=4096
kern.ipc.nmbclusters=400000
kern.ipc.maxsockbuf=83886080
83MB for a socket buffer is too much unless you're doing some HPC stuff.
The default should be fine.
net.inet.tcp.recvbuf_inc=524288
Again, this should be left at default unless you have a very specific
reason to increment it.
net.inet.tcp.recvbuf_max=16777216
ditto.
net.inet.tcp.sendbuf_inc=524288
ditto.
net.inet.tcp.sendbuf_max=16777216
ditto.
net.inet.tcp.sendspace=65536
This is the default setting.
net.inet.tcp.keepidle=300000
net.inet.tcp.keepintvl=60000
net.inet.ip.fw.dyn_max=65535
net.inet.ip.fw.dyn_buckets=65536
net.inet.ip.fw.dyn_ack_lifetime=120
net.inet.ip.fw.dyn_syn_lifetime=10
net.inet.tcp.nolocaltimewait=1
security.bsd.hardlink_check_uid=1
security.bsd.hardlink_check_gid=1
security.bsd.see_other_uids=0
security.bsd.see_other_gids=0
--
Andre
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