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    SubjectRe: Longstanding networking / SMP issue? (duplextest)
    On Thu, Feb 20, 2003 at 01:20:43AM -0800, Simon Kirby wrote:
    > 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. :)

    IP is best-effort. Dropping packets in odd cases to make locking simpler
    is not unreasonable. Would you prefer an slower kernel?

    -Andi

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