Realtek 8139 problems + workaround

[Attila Karpati]

Hello Realtek developers!

I read on the list, that others have the same problems as I have with the realtek cards. I write because I found a possible workaround:
If the driver+card goes weird, ping -s 8192 hostname helps (i tried this 
several times), here is an example:

karpati@bolyai ~ % ping kalmar
PING kalmar (157.181.14.12): 56 data bytes
64 bytes from 157.181.14.12: icmp_seq=0 ttl=64 time=416.1 ms
64 bytes from 157.181.14.12: icmp_seq=1 ttl=64 time=0.4 ms
64 bytes from 157.181.14.12: icmp_seq=2 ttl=64 time=0.4 ms
64 bytes from 157.181.14.12: icmp_seq=4 ttl=64 time=0.4 ms
64 bytes from 157.181.14.12: icmp_seq=3 ttl=64 time=1001.4 ms

--- kalmar ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max = 0.4/283.7/1001.4 ms
karpati@bolyai ~ % ping -s 8192 kalmar
PING kalmar (157.181.14.12): 8192 data bytes
8200 bytes from 157.181.14.12: icmp_seq=1 ttl=64 time=3020.1 ms
8200 bytes from 157.181.14.12: icmp_seq=2 ttl=64 time=2027.1 ms
8200 bytes from 157.181.14.12: icmp_seq=3 ttl=64 time=1034.0 ms
8200 bytes from 157.181.14.12: icmp_seq=4 ttl=64 time=40.9 ms
8200 bytes from 157.181.14.12: icmp_seq=5 ttl=64 time=16.4 ms
8200 bytes from 157.181.14.12: icmp_seq=6 ttl=64 time=14.9 ms
8200 bytes from 157.181.14.12: icmp_seq=7 ttl=64 time=14.6 ms
8200 bytes from 157.181.14.12: icmp_seq=8 ttl=64 time=14.6 ms
8200 bytes from 157.181.14.12: icmp_seq=9 ttl=64 time=14.5 ms

--- kalmar ping statistics ---
10 packets transmitted, 9 packets received, 10% packet loss
round-trip min/avg/max = 14.5/688.5/3020.1 ms

And on the other machine:

lab1 /contrib/rdist # ping -s 8192 lab2
PING lab2 (157.181.14.52): 8192 data bytes
8200 bytes from 157.181.14.52: icmp_seq=0 ttl=64 time=4035.3 ms
8200 bytes from 157.181.14.52: icmp_seq=1 ttl=64 time=3041.0 ms
8200 bytes from 157.181.14.52: icmp_seq=2 ttl=64 time=2045.2 ms
8200 bytes from 157.181.14.52: icmp_seq=3 ttl=64 time=1052.4 ms
8200 bytes from 157.181.14.52: icmp_seq=4 ttl=64 time=44.8 ms
8200 bytes from 157.181.14.52: icmp_seq=5 ttl=64 time=16.4 ms
8200 bytes from 157.181.14.52: icmp_seq=6 ttl=64 time=15.9 ms
8200 bytes from 157.181.14.52: icmp_seq=7 ttl=64 time=15.7 ms
8200 bytes from 157.181.14.52: icmp_seq=8 ttl=64 time=15.8 ms
8200 bytes from 157.181.14.52: icmp_seq=9 ttl=64 time=15.7 ms
8200 bytes from 157.181.14.52: icmp_seq=10 ttl=64 time=16.0 ms

This may help you, maybe.

Bye, 
 Attila Karpati

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