Lighttpd outgoing traffic is too low.

I

iliaviht

Hi. I have a high load server. And after I update FreeBSD to 7.2 version. Sometimes lighttpd web server's outgoing traffic became too low. Only reboot solves the problem(
Here is my configs:
Code: 
# cat /boot/loader.conf
net.inet.tcp.syncache.hashsize=1024
net.inet.tcp.syncache.bucketlimit=100
net.inet.tcp.tcbhashsize=4096
kern.ipc.nsfbufs=10240

]# cat /etc/sysctl.conf
net.inet.tcp.blackhole=1
net.inet.udp.blackhole=1
kern.ipc.nmbclusters=0
kern.ipc.nmbclusters=262144
kern.ipc.somaxconn=4096
kern.ipc.maxsockets=204800
kern.maxfiles=204800
kern.maxfilesperproc=200000
net.inet.ip.portrange.first=1024
net.inet.ip.portrange.last=65535
net.inet.ip.portrange.randomized=0
net.inet.tcp.maxtcptw=40960
net.inet.tcp.msl=30000
net.inet.tcp.syncookies=1
net.inet.tcp.nolocaltimewait=1
net.inet.tcp.fast_finwait2_recycle=1
Is anyone have same problems? Maybe my configs is wrong? Which kernel variables I must check?
 
Yes I mean "low". It seems I solve this.
I add
Code: 
server.max-connections = 3072
server.max-fds = 6144
to lighttpd.conf.

But also I add 1 Gb RAM to my server.
May be additional ram solve the problem?
 
Yes, additional RAM and RAID can always help boost server performance. How many requests per second your server handles 10-100-1000? Do you see any error message in lighttpd error log file? What kind of backend used for fastcgi local/ remote?
 
There is no any fastcgi scripts, only static data(media files).

[cmd=]netstat -an | grep xx.xxx.xxx.xxx.80 | wc -l[/cmd]
shows 1000 ~ 1500 max

In lighttpd error logs :
Code: 
2009-06-15 01:33:52: (connections.c.604) connection closed: write failed on fd 21
 
You are running out of open FDs. For static files lighttpd should able to handle large number of requests such as 2000 - 3000 req/s. netstat is not accurate way to find out this info as it will include other stat also. Use mod_status to get correct info. Make sure lighttpd user can open large number of files and backend is set as follows
Code: 
server.network-backend = "freebsd-sendfile"

There are other factors too like other servers (like mysql and daemons) running and opening fds. In some cases you need to split server into multiple backends.
 
Thank you for your recomendations)
kern.maxfiles - is this max number of files for user
or kern.maxproc this?
 
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