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SubjectRe: No connect timeout?

On Fri, 19 Mar 1999, Andi Kleen wrote:

> > Ik, it seems that the machine was running fine for about 4 days and now
> > I'm looking at it today and their are 54 stuck connections :<
>
> Could you check with ps -lax where they are hanging?

Okay, I've got 3 today:

netstat -nto | grep -i syn_sent
tcp 0 0 207.69.194.216:20 129.97.150.78:1379
SYN_SENT off (0.00/0)
tcp 0 0 207.69.194.216:20 203.247.41.149:1101
SYN_SENT off (0.00/0)
tcp 0 0 207.69.194.216:20 200.245.187.107:1047
SYN_SENT off (0.00/0)

saens{root}~/lsof-4.37#./lsof -n | grep -i syn_sent
ftpd 6191 root 7u inet 4265125 TCP
207.69.194.216:ftp-data->129.97.150.78:1379 (SYN_SENT)
ftpd 16150 root 7u inet 4399642 TCP
207.69.194.216:ftp-data->12.23.138.125:2327 (SYN_SENT)
ftpd 19859 root 7u inet 4147388 TCP
207.69.194.216:ftp-data->200.245.187.107:1047 (SYN_SENT)
ftpd 22375 root 7u inet 4166354 TCP
207.69.194.216:ftp-data->203.247.41.149:1101 (SYN_SENT)

saens{root}~/lsof-4.37#ps lax 22375 19859 6191
FLAGS UID PID PPID PRI NI SIZE RSS WCHAN STA TTY TIME COMMAND
100 101 6191 127 0 0 1372 768 inet_wait_f S ? 0:03 ftpd: d
100 101 19859 127 0 0 1356 748 inet_wait_f S ? 0:00 ftpd: 2
100 101 22375 127 0 0 1372 780 inet_wait_f S ? 0:00 ftpd: 2
saens{root}~/lsof-4.37#ps lanx 22375 19859 6191
FLAGS UID PID PPID PRI NI SIZE RSS WCHAN STA TTY TIME COMMAND
100 101 6191 127 0 0 1372 768 c015d0b7 S ffff 0:03 ftpd: d
100 101 19859 127 0 0 1356 748 c015d0b7 S ffff 0:00 ftpd: 2
100 101 22375 127 0 0 1372 780 c015d0b7 S ffff 0:00 ftpd: 2

saens{root}~/lsof-4.37#grep c015d0 /boot/System.map-2.2.3
c015d008 T inet_dgram_connect
c015d060 t inet_wait_for_connect

strace -p 22375
connect(7, {sin_family=AF_INET, sin_port=htons(1101),
sin_addr=inet_addr("203.247.41.149")}, 16 <unfinished ...>

Your patch does seem to have helped things (or conditions have changed..)
I get them less frequently but they still appear.

Thanks,
Jason


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