Sockets stuck in FIN_WAIT_1

[Robert Blayzor]

On May 29, 2008, at 3:12 PM, Matthew Dillon wrote:
>    I guess nobody mentioned the obvious thing to check:  Make sure
>    TCP keepalive is turned on.
>
>    sysctl net.inet.tcp.always_keepalive=1


Thanks Matt.

I also thought that a keepalives were not running and sessions just  
stuck around forever, however I do have:


net.inet.tcp.keepidle=900000
net.inet.tcp.keepintvl=30000
net.inet.tcp.msl=5000
net.inet.tcp.always_keepalive=1  (default)


I believe keep idle was defaulted to 2hrs, I changed it to 15 minutes  
with a 30 second tick... I still found FIN_WAIT_1 sessions stuck for  
several hours, if not infinite.

Nonet he less, I have a new server up running 7.0-p1, I'll be pumping  
a lot of traffic to that box soon and I'll see how that makes out.

-- 
Robert Blayzor, BOFH
INOC, LLC
rblayzor at inoc.net
http://www.inoc.net/~rblayzor/