On Fri, 2004-08-20 at 06:27, Ingo Molnar wrote:

* Lee Revell [off-list ref] wrote:

quoted

This is an extreme load situation, so I don't think it will be a
real-world problem.  I have not seen it under any normal workload.

well, 9 msecs is still not nice. I've been able to trigger larger than
10msec latencies too on a 2 GHz box.

If this is the case then should a make -j12 have ground the machine 
to a halt the way it did?

hm, tcp_collapse() in net/ipv4/tcp_input.c. Could you try to just return
from that function?  Collapsing skbs of a given socket is not a
necessary functionality (it is only a 'nice' thing to have in OOM
situations) and it indeed can introduce quite high latencies.

OK, will test this.

Lee