Re: Can anyone explain this ?

Giovanni Mazzarello (webadmin@linux.asamrt.interbusiness.it)
Fri, 21 Mar 1997 10:03:59 +001


> To: linux-net@vger.rutgers.edu, linux-kernel@vger.rutgers.edu
> Subject: Can anyone explain this ?
> Date: Tue, 18 Mar 1997 14:09:41 +0530
> From: Amitay B Isaacs <amitay@cse.iitb.ernet.in>

> Hi,
>
> I have been getting very weird responses for ping. Here is the ping
> output on 2 of the machines.
>
>
> Script started on Tue Mar 18 14:04:23 1997
>
> amitay@anamika:~$ cat /proc/version
> Linux version 2.1.29 (root@varun.cse.iitb.ernet.in) (gcc version 2.7.2) #5 Thu Mar 13 23:43:45 IST 1997
>
> amitay@anamika:~$ ping ftp.cc.iitb.ernet.in
> PING ftp.cc.iitb.ernet.in (144.16.106.173): 56 data bytes
> 64 bytes from 144.16.106.173: icmp_seq=0 ttl=62 time=-21.-2 ms
> 64 bytes from 144.16.106.173: icmp_seq=1 ttl=62 time=36.2 ms
...
> --- ftp.cc.iitb.ernet.in ping statistics ---
> 29 packets transmitted, 29 packets received, 0% packet loss
> round-trip min/avg/max = -24.-1/11.0/44.2 ms
>
>
> amitay@mitra:~$ cat /proc/version
> Linux version 2.0.28 (root@mitra.cse.iitb.ernet.in) (gcc version 2.7.2) #2 Wed Jan 22 22:45:53 IST 1997
>
> amitay@mitra:~$ ping ftp.cc.iitb.ernet.in
> PING ftp.cc.iitb.ernet.in (144.16.106.173): 56 data bytes
> 64 bytes from 144.16.106.173: icmp_seq=0 ttl=62 time=3.6 ms
> 64 bytes from 144.16.106.173: icmp_seq=1 ttl=62 time=2.0 ms
...
>
> --- ftp.cc.iitb.ernet.in ping statistics ---
> 19 packets transmitted, 19 packets received, 0% packet loss
> round-trip min/avg/max = 1.9/2.2/3.6 ms
>
> Script done on Tue Mar 18 14:05:41 1997
>
>
> With 2.0.28 kernel I get a steady ping response while with 2.1.29 kernel
> I get some negative (?) times.
>

I'm not sure if it will be a good idea, but why don't you copy
the ping file of the 2.0.28 kernel on the 2.1.29 kernel machine
and run both on the same system to compare them.
You could descover if it'is a program bug or a system bug.

Bye

Gianni