Dear Bernd, thank you so much for detailed answer! For my work information you gave to me is sufficient - it helped me a lot!
Regards, Elena ----- Original Message ----- From: Bernd Eckenfels <[EMAIL PROTECTED]> Date: Monday, January 23, 2006 8:32 am Subject: netstat socket timer output format > Dear Elena, > > you asked me about the meaning of the timers column in "netstat - > to" output. > > I am afraid I dont know a Document which has details on them, I was > lookingfor it, too. > > However I can give you a rough hint: Those timers are of course > related to > the Timers defined in RFC1122 and possibly RFC2988. The timers are > relativeto the actual state, they may be retransmission timers or > state timeouts. > > If you need to find out the exact meaning, I am afraid you have to > look into > the kernel source. > > The word before the brackets give the timer in action, it can be on > (retransmit), off, keepalive, timewait or a unknown timer. The > first number > is the time left, the second number is a retry count for that state > and the > last is a timeout (I asume it is in retries but i am not sure) > > The values are from /proc/net/tcp which is formatted this way: > > timer_run (time_len/retr/timeout) > > from here: > > num = sscanf(line, > "%d: %64[0-9A-Fa-f]:%X %64[0-9A-Fa-f]:%X %X %lX:%lX %X:%lX %lX > %d %d %lu > %512s\n", > &d, local_addr, &local_port, rem_addr, &rem_port, > &state, &txq, &rxq, &timer_run, &time_len, &retr, > &uid, &timeout, &inode, more); > > > And generated in linux-*/net/ipv4/tcp_ipv4.c > > For example for SYN_RECV you have timerun=1, the timelen is the > time to > expire, retr and timeout are 0. (see get_openreq4()). Other states are > generated in get_timewait4_sock() or get_tcp4_sock() > > I would however suggest, you ask this on the netdev list, there > might be a > person who know a place where that is described. I would be very > happy to > put that into netstat(8) if somebody can give me a hint. Thats why > I have > copied this answer to the list. > > Greetings > Bernd > - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
