Hello again, I have found that tcpdump, on FDDI, using mmap ring buffer in libpcap, on 2.4.2 works like a champ if Symmetric multi-processing support is turned off. It loses it's shared memory when run on 2.4.2 SMP. Our fddi can get pretty busy. But, it's only around 40 to 50% utilization when it dies. And it usually dies after about 250,000 to 300,000 packets. I suspect some problem in defxx.c. It has changed quite a bit since the 2.2.18 days when it worked on Symmetric multi-processing kernel. It didn't work at first. But, was tweaked for multi-processing, and worked fine for simple applications that did not fork a lot of children (one of which would abscond with the shared memory). But, my tcpdump doesn't do any forking around. Help? -- Phil Wood, cpw@lanl.gov - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
