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Re: Ping inconsistent ecos


On Wed, 2005-08-03 at 16:23 +0530, prashanthu baragur wrote:
> Hi,
> 
> We are using ecos on IXP425 processor and ported intel npe microcode
> to enable ethernet interface. Now i observer a wierd behavior with the
> ICMP test packets.
> When i tried to ping the target, following was the observation.
> 
> 64 bytes from 192.168.250.235: icmp_seq=1832 ttl=64 time=14.2 ms
> 64 bytes from 192.168.250.235: icmp_seq=1833 ttl=64 time=212 ms
> 64 bytes from 192.168.250.235: icmp_seq=1834 ttl=64 time=47.3 ms
> 64 bytes from 192.168.250.235: icmp_seq=1835 ttl=64 time=1000 ms
> 64 bytes from 192.168.250.235: icmp_seq=1836 ttl=64 time=0.665 ms
> 64 bytes from 192.168.250.235: icmp_seq=1837 ttl=64 time=32.5 ms
> 64 bytes from 192.168.250.235: icmp_seq=1838 ttl=64 time=182 ms
> 64 bytes from 192.168.250.235: icmp_seq=1839 ttl=64 time=17.2 ms
> 64 bytes from 192.168.250.235: icmp_seq=1840 ttl=64 time=1000 ms
> 
> Min time taken is 0.665 ms and Max 1 second. I also tried with
> cross(pear to pear) ethernet cable to isolate from the LAN. There was
        peer to peer

> no difference.
> Due to this all ethernet based applications are becoming slow.
> 
> Any coments are appreciable.

Are you running an eCos application, or is this just a ping
to RedBoot?  If the latter, this is quite normal behaviour
as the RedBoot networking is purely polled and the time between
polls varies [due to other factors]

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------


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