Re: Need to reboot Debian frequently
On Sat, Apr 05, 2008 at 12:00:44PM +0800, Pete Kay wrote:
> Hi,
>
> Here is my w,free, top results when my linux server's network become too
> slow again ( it just happened).
>
> w output:
> 19:41:19 up 1 day, 20:07, 6 users, load average: 1.46, 1.85, 1.86
> USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
> anne :0 - Thu23 ?xdm? 26:59 0.87s
> x-session-manag
> root pts/2 :0.0 Thu23 19:28 56.31s 56.29s asterisk
> -vvvvv
yikes, asterisk running as root.
Check /var/log/asterisk/messages (of /var/log/asterisk/full ).
> root pts/3 :0.0 Fri20 10:18 0.42s 0.42s bash
> root pts/4 :0.0 Fri21 0.00s 0.80s 0.00s w
> root pts/5 :0.0 Fri01 24:43 0.00s 0.00s bash
> root pts/6 :0.0 Fri01 20:02 0.04s 0.04s bash
>
> free output:
> total used free shared buffers cached
> Mem: 1028492 1009284 19208 0 4700 649756
> -/+ buffers/cache: 354828 673664
> Swap: 2650684 123532 2527152
>
> top output:
> top - 19:41:37 up 1 day, 20:08, 6 users, load average: 1.33, 1.80, 1.84
> Tasks: 140 total, 3 running, 134 sleeping, 3 stopped, 0 zombie
> Cpu(s): 32.2%us, 29.0%sy, 0.0%ni, 37.1%id, 1.7%wa, 0.0%hi, 0.0%si,
> 0.0%st
> Mem: 1028492k total, 1011888k used, 16604k free, 4724k buffers
> Swap: 2650684k total, 123532k used, 2527152k free, 652132k cached
>
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 4292 root 25 0 15808 1004 856 R 98 0.1 1441:12 notify.php
What is that notify.php ?
> 6623 anne 15 0 337m 145m 26m S 24 14.5 169:28.67 firefox-bin
> 5574 anne 15 0 67260 17m 11m S 0 1.8 0:08.40 nautilus
> 5550 root 15 0 2228 1168 856 R 0 0.1 0:00.07 top
> 1 root 15 0 1944 504 476 S 0 0.0 0:01.27 init
> 2 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/0
> 3 root 34 19 0 0 0 S 0 0.0 0:00.00 ksoftirqd/0
> 4 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/1
> 5 root 34 19 0 0 0 S 0 0.0 0:00.00 ksoftirqd/1
> 6 root 10 -5 0 0 0 S 0 0.0 0:00.68 events/0
> 7 root 10 -5 0 0 0 S 0 0.0 0:00.01 events/1
> 8 root 10 -5 0 0 0 S 0 0.0 0:00.00 khelper
> 9 root 10 -5 0 0 0 S 0 0.0 0:00.00 kthread
> 13 root 10 -5 0 0 0 S 0 0.0 0:00.04 kblockd/0
> 14 root 19 -5 0 0 0 S 0 0.0 0:00.00 kblockd/1
> 15 root 15 -5 0 0 0 S 0 0.0 0:00.00 kacpid
> 111 root 10 -5 0 0 0 S 0 0.0 0:00.00 kseriod
>
>
> For the tcpdump, I have to apt-get install it first and then wait under the
> server's network becomes too slow again the next
> time.
> By the way, when the network becomes slow, the linux server can still run
> fine without any slowness. This Linux box is behind a router which has two
> computers ( one linux and one vista ) under its network.
>
> How could I solve this problem? What worries me is that I am consistently
> having to reboot 2 - 3 days which means my server is still not ready for
> production.
The network is always "slow". Maybe you have some excessive upstream
traffic. Knowing what that traffic is cal help identifying the exact
fault.
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