Simpler Navigation for Servers and Operating Systems
Completed: a much simpler Servers and Operating Systems section of the Community. We combined many of the older boards, so you won't have to click through so many levels to get at the information you need. Check the consolidated boards here as many sub-forums are now single boards.
cancel
Showing results for 
Search instead for 
Did you mean: 

TIME_WAIT

Chakravarthi
Trusted Contributor

TIME_WAIT

hi,

i'm using 2.2 kernel machine, in this socket goes to TIME_WAIT state and doesnt accept any new connections for 60 seconds. how do i reduce the timeout value in 2.2 kernel

i tried changing values of tcp_fin_timeout and also i tried the following command

sysctl -w net.ipv4.vs.timeout_timewait=30 it gives error
error: 'net.ipv4.vs.timeout_timewait' is an unknown key

is there any other way to come out of this problem?

-chakri

7 REPLIES
Sergejs Svitnevs
Honored Contributor

Re: TIME_WAIT

Did you try the following command ?
# sysctl -w net.ipv4.tcp_fin_timeout = 30


Regards,
Sergejs
Ivan Ferreira
Honored Contributor

Re: TIME_WAIT

I don't have 2.2 kernel, but in the version I use, the value is:

net.ipv4.tcp_fin_timeout

But, why does not accept new connections? Is not a daemon that can spawn childs?
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
Chakravarthi
Trusted Contributor

Re: TIME_WAIT

not sure, using an application which opens a socket connectiona and when you close the socket it goes to TIME_WAIT state and doesnt accept new connection for 60 seconds. tried changing all the parameters still no luck.

--chakri
Muthukumar_5
Honored Contributor

Re: TIME_WAIT

check resource status of CPU and memory or disk. May be any of them are getting saturated. sysctl -a | grep timewait gives if there is a tunable called net.ipv4.vs.timeout_timewait. Else select relavent tunable regarding to 2.2 kernel.

-Muthu

Easy to suggest when don't know about the problem!
Muthukumar_5
Honored Contributor

Re: TIME_WAIT

what are the tunables you are trying?

http://akt.sourceforge.net/doc/akt.list.02.html - List.

# check list

# dmesg -c gives more related errors for tuning
# resource usage with sar or top

-Muthu
Easy to suggest when don't know about the problem!
B. Hulst
Trusted Contributor

Re: TIME_WAIT

Hi,

Reducing a time out value is not a very stable option in many cases...

Regards,
Bob
Chakravarthi
Trusted Contributor

Re: TIME_WAIT


which is the equivalent key in 2.2 of net.ipv4.vs.timeout_timewait?