TIME_WAIT

[Chakravarthi]

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

[Sergejs Svitnevs]

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


Regards,
Sergejs

[Ivan Ferreira]

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?

[Chakravarthi]

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]

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

[Muthukumar_5]

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

[B. Hulst]

Hi,

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

Regards,
Bob

[Chakravarthi]

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