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Connections hanging


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#1 xof7

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Posted 17 March 2009 - 09:41 AM

I've got a dedicated server that I recently purchased. I've disabled a few things that originally came with the server that I knew I would not be using, chilisoft ASP engine, and real media server.

Now for some reason I'm having really long connection times. It takes me about 90 seconds for me to actually login to the box via ssh.
FTP connections almost always timeout.

After a fresh restart, things are much more responsive but after about 12 hours of up time, it starts grinding to a halt.

Apache is not being effected tho. I'm not sure what would cause this but it is sure a pain in the ass.

Any ideas?

p4 3.0ghz
1gb ram
250gb hard drive

Edited by xof7, 17 March 2009 - 03:21 PM.


#2 phr34kc0der

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Posted 17 March 2009 - 12:07 PM

Since you mentioned chilisoft ASP engine im going to assume this isnt a Windows server, but maybe posting some extra details like OS, network setup etc might help. Depending on how many users it could be network congestion. Or maybe some process taking up all resources. Even though i dont have a huge amount of experience with anything other than home servers I would start by looking at whats running while it hangs (try doing locally if you cant do ssh) and working my way from there.

#3 xof7

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Posted 17 March 2009 - 01:16 PM

[root@alpha ~]# cat /proc/version
Linux version 2.6.26.2 (root@build.axxs.net) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-51)) #2 SMP Sat Aug 16 08:57:58 EDT 2008

[root@alpha ~]# ps -A
  PID TTY		  TIME CMD
	1 ?		00:00:00 init
	2 ?		00:00:00 kthreadd
	3 ?		00:00:00 migration/0
	4 ?		00:00:00 ksoftirqd/0
	5 ?		00:00:00 migration/1
	6 ?		00:00:00 ksoftirqd/1
	7 ?		00:00:00 events/0
	8 ?		00:00:00 events/1
	9 ?		00:00:00 khelper
  119 ?		00:00:00 kblockd/0
  120 ?		00:00:00 kblockd/1
  121 ?		00:00:00 kacpid
  122 ?		00:00:00 kacpi_notify
  183 ?		00:00:00 ata/0
  184 ?		00:00:00 ata/1
  185 ?		00:00:00 ata_aux
  186 ?		00:00:00 ksuspend_usbd
  192 ?		00:00:00 khubd
  195 ?		00:00:00 kseriod
  238 ?		00:00:00 pdflush
  239 ?		00:00:00 pdflush
  240 ?		00:00:00 kswapd0
  241 ?		00:00:00 aio/0
  242 ?		00:00:00 aio/1
  243 ?		00:00:00 nfsiod
  244 ?		00:00:00 cryptd
 1043 ?		00:00:00 kpsmoused
 1067 ?		00:00:00 rpciod/0
 1068 ?		00:00:00 rpciod/1
 1069 ?		00:00:00 kirqd
 1075 ?		00:00:00 kjournald
 1116 ?		00:00:00 kauditd
 1145 ?		00:00:00 udevd
 2688 ?		00:00:00 kjournald
 2689 ?		00:00:00 kjournald
 2690 ?		00:00:00 kjournald
 2953 ?		00:00:00 syslogd
 2956 ?		00:00:00 klogd
 2965 ?		00:00:00 irqbalance
 2977 ?		00:00:00 mdmpd
 3008 ?		00:00:00 smartd
 3016 ?		00:00:00 acpid
 3025 ?		00:00:00 snmpd
 3034 ?		00:00:00 snmptrapd
 3047 ?		00:00:00 poprelayd
 3055 ?		00:00:00 sshd
 3064 ?		00:00:00 xinetd
 3098 ?		00:00:00 crond
 3106 ?		00:00:00 mysqld_safe
 3155 ?		00:00:00 xfs
 3173 ?		00:00:00 atd
 3180 ?		00:00:01 mysqld
 3188 ?		00:00:00 saslauthd
 3224 ?		00:00:00 saslauthd
 3225 ?		00:00:00 saslauthd
 3226 ?		00:00:00 saslauthd
 3227 ?		00:00:00 saslauthd
 3253 ?		00:00:00 httpd
 3267 ?		00:00:00 httpd
 3268 ?		00:00:00 httpd
 3269 ?		00:00:00 httpd
 3270 ?		00:00:00 httpd
 3271 ?		00:00:00 httpd
 3272 ?		00:00:00 httpd
 3273 ?		00:00:00 httpd
 3274 ?		00:00:00 httpd
 3275 ?		00:00:00 httpd
 3276 ?		00:00:00 httpd
 3277 ?		00:00:00 httpd
 3278 ?		00:00:00 httpd
 3279 ?		00:00:00 httpd
 3280 ?		00:00:00 httpd
 3281 ?		00:00:00 httpd
 3315 tty1	 00:00:00 mingetty
 3316 tty2	 00:00:00 mingetty
 3317 tty3	 00:00:00 mingetty
 3331 tty4	 00:00:00 mingetty
 3337 tty5	 00:00:00 mingetty
 3338 tty6	 00:00:00 mingetty
 3343 ?		00:00:00 svscanboot
 3374 ?		00:00:00 svscan
 3375 ?		00:00:00 readproctitle
 3376 ?		00:00:00 supervise
 3377 ?		00:00:00 supervise
 3378 ?		00:00:00 supervise
 3379 ?		00:00:00 supervise
 3380 ?		00:00:00 multilog
 3381 ?		00:00:00 supervise
 3382 ?		00:00:00 dnscache
 3383 ?		00:00:00 multilog
 3384 ?		00:00:00 tcpserver
 3385 ?		00:00:00 supervise
 3386 ?		00:00:00 supervise
 3387 ?		00:00:00 rbldns
 3388 ?		00:00:00 tcpserver
 3389 ?		00:00:00 multilog
 3390 ?		00:00:00 supervise
 3391 ?		00:00:00 multilog
 3396 ?		00:00:00 sshd
 3398 pts/0	00:00:00 bash
 3437 ?		00:00:00 httpsd
 3454 ?		00:00:00 httpsd
 3455 ?		00:00:00 httpsd
 3456 ?		00:00:00 httpsd
 3457 ?		00:00:00 httpsd
 3458 ?		00:00:00 httpsd
 3459 ?		00:00:00 httpsd
 3460 ?		00:00:00 httpsd
 3461 ?		00:00:00 httpsd
 3462 ?		00:00:00 httpsd
 3463 ?		00:00:00 httpsd
 3464 ?		00:00:00 httpsd
 3466 ?		00:00:00 httpsd
 3467 ?		00:00:00 httpsd
 3468 ?		00:00:00 httpsd
 3469 ?		00:00:00 httpsd
 4476 ?		00:00:00 sshd
 4478 ?		00:00:00 sftp-server
 5572 ?		00:00:00 sendmail
 5580 ?		00:00:00 sendmail
 5901 ?		00:00:00 ftpd
 5902 ?		00:00:00 ftpd
 5906 ?		00:00:00 ftpd
 6134 ?		00:00:00 sshd
 6196 pts/1	00:00:00 bash
 6230 ?		00:00:00 ftpd
 6264 ?		00:00:00 ftpd
 6267 ?		00:00:00 ftpd
 6270 ?		00:00:00 ftpd
 6304 ?		00:00:00 ftpd
 6305 pts/1	00:00:00 ps
[root@alpha ~]#
It seems like processes just sit there after they have run their course but don't actually get killed.

#4 phasma

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Posted 17 March 2009 - 02:36 PM

The could be symptoms of a ton of things. Ping the server and post what kind of results you get.

#5 xof7

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Posted 17 March 2009 - 03:20 PM

It's responding to pings perfectly well. I've had one running for a couple hours:
Packets: Sent = 11329, Received = 11314, Lost = 15 (0% loss),
Approximate round trip times in milli-seconds:
	Minimum = 91ms, Maximum = 378ms, Average = 107ms





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