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Date:      Tue, 4 May 1999 10:48:23 +0200 (CEST)
From:      Soren Schmidt <sos@freebsd.dk>
To:        imp@harmony.village.org (Warner Losh)
Cc:        mobile@FreeBSD.ORG
Subject:   Re: slow ep response...
Message-ID:  <199905040848.KAA21854@freebsd.dk>
In-Reply-To: <199905040537.XAA55127@harmony.village.org> from Warner Losh at "May 3, 1999 11:37:51 pm"

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It seems Warner Losh wrote:
> 
> I was just able to recreate the slow ep response on my machine here
> (granted, it is running my experiental pccard stuff, which is prone to
> crashing), but I was seeing the following on an unloaded ethernet
> connection:
> 
> % ping 10.5
> PING 10.5 (10.0.0.5): 56 data bytes
> 64 bytes from 10.0.0.5: icmp_seq=0 ttl=255 time=931.404 ms
> 64 bytes from 10.0.0.5: icmp_seq=1 ttl=255 time=1924.132 ms
> 64 bytes from 10.0.0.5: icmp_seq=2 ttl=255 time=914.182 ms
> 64 bytes from 10.0.0.5: icmp_seq=3 ttl=255 time=1904.401 ms
> 64 bytes from 10.0.0.5: icmp_seq=4 ttl=255 time=894.465 ms
> 64 bytes from 10.0.0.5: icmp_seq=5 ttl=255 time=1884.667 ms
> 64 bytes from 10.0.0.5: icmp_seq=6 ttl=255 time=874.722 ms
> 
> This would certainly account for the problems you've been seeing.
> 
> I suspect it has something to do with interrupts, but I'm not sure
> what.  I just wanted to let people know that I've seen this here...
> It seems like it is interrupt related...

You are not getting the interrupt, you are running on the 
timeout watchdog...

-Søren


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