Packet Loss

Minase · #1 16th January 2010, 09:56 PM

hello there,im currently running fedora 12 as a server but i have 1 weird problem :| im loosing packets out of nowhere at send and receive doesn't matter what i loose packets...

--- google.ro ping statistics ---
12 packets transmitted, 7 received, 41% packet loss, time 11598ms

can anyone help me with tips to trace what's causing this?? thank you
sometimes the machine freeze and only a hard reset will do it here is what top is saying me
i will post them later :| cause it works soo hard..
anyway CPU usage is not high ....
any info ??
thank you

here is the top

Code:

top - 00:00:39 up  3:16,  3 users,  load average: 1.06, 1.03, 1.05
Tasks: 139 total,   1 running, 137 sleeping,   0 stopped,   1 zombie
Cpu(s):  0.2%us,  0.2%sy,  0.0%ni, 99.5%id,  0.2%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   1026808k total,   912568k used,   114240k free,   102304k buffers
Swap:  2064376k total,        0k used,  2064376k free,   517184k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
    1 root      20   0  2028  856  636 S  0.0  0.1   0:01.13 init
    2 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 kthreadd
    3 root      RT  -5     0    0    0 S  0.0  0.0   0:00.01 migration/0
    4 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/0
    5 root      RT  -5     0    0    0 S  0.0  0.0   0:00.00 watchdog/0
    6 root      RT  -5     0    0    0 S  0.0  0.0   0:00.03 migration/1
    7 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/1
    8 root      RT  -5     0    0    0 S  0.0  0.0   0:00.00 watchdog/1
    9 root      15  -5     0    0    0 S  0.0  0.0   0:00.07 events/0
   10 root      15  -5     0    0    0 S  0.0  0.0   0:00.07 events/1
   11 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 cpuset
   12 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 khelper
   13 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 netns
   14 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 async/mgr
   15 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 kintegrityd/0
   16 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 kintegrityd/1
   17 root      15  -5     0    0    0 S  0.0  0.0   0:00.03 kblockd/0
   18 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 kblockd/1
   19 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 kacpid
   20 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 kacpi_notify
   21 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 kacpi_hotplug
   22 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 ata/0
   23 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 ata/1
   24 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 ata_aux
   25 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 ksuspend_usbd
   26 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 khubd
   27 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 kseriod
   28 root      20   0     0    0    0 S  0.0  0.0   0:00.00 khungtaskd
   29 root      20   0     0    0    0 S  0.0  0.0   0:00.00 pdflush
   30 root      20   0     0    0    0 S  0.0  0.0   0:00.09 pdflush
   31 root      15  -5     0    0    0 S  0.0  0.0   0:00.09 kswapd0
   32 root      25   5     0    0    0 S  0.0  0.0   0:00.00 ksmd
   33 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 aio/0
   34 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 aio/1
   35 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 crypto/0
   36 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 crypto/1
   42 root      15  -5     0    0    0 S  0.0  0.0   0:00.00 scsi_eh_0

Zotter · #2 17th January 2010, 01:05 AM

Packet loss is a networking issue. Likely to be answered by your ISP.
But then, may be considered 'normal' depending on your available infrastructure.

Minase · #3 17th January 2010, 11:19 AM

thats not a problem with ISP,i have a dedicate line with high speed.
but the problem is in fedora somewhere... maybe bind...
it's like a bottle neck somewhere but dont know where :|
the system is slow,unresponsive,and to make a complete suite after all this struggling it does crash.
Now it's weird i have added auto restart on kernel panic,but it doesn't restart :|
Maybe someone know something about this
my ethernet is from Youkon marvell 10/100/1000 Mb/s
Thank you