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DateThu, 20 Feb 2003 01:20:43 -0800
FromSimon Kirby <>
SubjectRe: Longstanding networking / SMP issue? (duplextest)
On Thu, Feb 20, 2003 at 08:52:46AM +0100, Andi Kleen wrote:

> That's probably because of the lazy ICMP socket locking used for the
> ICMP socket. When an ICMP is already in process the next ICMP triggered
> from a softirq (e.g. ECHO-REQUEST) is dropped  
> (see net/ipv4/icmp_xmit_lock_bh())

Hmm...and this is considered desired behavior?  It seems like an odd way
of handling packets intended to test latency and reliability. :)

This is most likely the cause, but I will test tomorrow to confirm.

Thanks,

Simon-

[        Simon Kirby        ][        Network Operations        ]
[     sim@netnation.com     ][     NetNation Communications     ]
[  Opinions expressed are not necessarily those of my employer. ]
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