[realtek] Odd behaviour (ping take 3 seconds while normally it takes 1 ms)

j.makkinje@chem.uu.nl j.makkinje@chem.uu.nl
Wed Mar 27 04:20:01 2002


When I do a ping command I get the following output:

I am not a network expert but the ouput looks stange 

64 bytes from 131.211.155.53: icmp_seq=6 ttl=255 time=0.594 ms
64 bytes from 131.211.155.53: icmp_seq=3 ttl=255 time=3001.232 ms
64 bytes from 131.211.155.53: icmp_seq=4 ttl=255 time=2001.615 ms
64 bytes from 131.211.155.53: icmp_seq=5 ttl=255 time=1001.905 ms
64 bytes from 131.211.155.53: icmp_seq=10 ttl=255 time=1.328 ms
64 bytes from 131.211.155.53: icmp_seq=7 ttl=255 time=3001.989 ms
64 bytes from 131.211.155.53: icmp_seq=8 ttl=255 time=2002.317 ms
64 bytes from 131.211.155.53: icmp_seq=9 ttl=255 time=1002.605 ms
64 bytes from 131.211.155.53: icmp_seq=14 ttl=255 time=0.579 ms
64 bytes from 131.211.155.53: icmp_seq=11 ttl=255 time=3001.249 ms
64 bytes from 131.211.155.53: icmp_seq=12 ttl=255 time=2001.586 ms
64 bytes from 131.211.155.53: icmp_seq=13 ttl=255 time=1001.899 ms
64 bytes from 131.211.155.53: icmp_seq=17 ttl=255 time=0.549 ms
64 bytes from 131.211.155.53: icmp_seq=15 ttl=255 time=2001.182 ms
64 bytes from 131.211.155.53: icmp_seq=16 ttl=255 time=1003.578 ms
64 bytes from 131.211.155.53: icmp_seq=21 ttl=255 time=0.582 ms
64 bytes from 131.211.155.53: icmp_seq=18 ttl=255 time=3001.251 ms
64 bytes from 131.211.155.53: icmp_seq=19 ttl=255 time=2001.294 ms
64 bytes from 131.211.155.53: icmp_seq=20 ttl=255 time=1001.294 ms
64 bytes from 131.211.155.53: icmp_seq=25 ttl=255 time=0.664 ms
64 bytes from 131.211.155.53: icmp_seq=22 ttl=255 time=3001.323 ms
64 bytes from 131.211.155.53: icmp_seq=23 ttl=255 time=2001.359 ms
64 bytes from 131.211.155.53: icmp_seq=24 ttl=255 time=1001.378 ms
64 bytes from 131.211.155.53: icmp_seq=29 ttl=255 time=0.504 ms
64 bytes from 131.211.155.53: icmp_seq=26 ttl=255 time=3000.692 ms
64 bytes from 131.211.155.53: icmp_seq=27 ttl=255 time=2000.813 ms
64 bytes from 131.211.155.53: icmp_seq=28 ttl=255 time=1000.940 ms

The order changes and some packages are lost, other have long delay. 

This 'error' especially occurs during and after heavy network traffic. 
Other network commands also become slow.

I noticed this behaviour disappears after reconfiguring the card.

Can you help me making sense of this. 

The question is how to solve this. Reconfiguring the (ifconfig) the
network is not a serious option. (May be I should change the card or
the driver). 


-- 
    Jeroen Makkinje
    Department of Interfaces
    DEBYE INSTITUTE - CHEMISTRY
    Padualaan 8, 3584 CH  UTRECHT
    tel: 00-31-(0)30-253.35.08
    fax: 00-31-(0)30-253.63.50
    <http://www.chem.uu.nl/interfaces/>