on HostS; ping -f -l 5000000 -s 1 hostD >/dev/null on HostD; tcpdump >/dev/null No tcpdump running on hostD; hostD reciving packets about 60000 Packets per Second (pps), hostS sending packets about 60000 pps hostD CPU interrupt about 46 % (by /usr/bin/top) while tcpdump running on hostD; on HostD, user processes (netstat, top ...) are locked (or are eager for CPU time silce) . hostS sending about 80000 pps!! Kill the ping process on hostS, netstat resume, and reports many input packtes received. So, while tcpdump (or packet duplicate in BPF routine), all CPU time slice may consume in interrupt routines. Without SMP configuration on hostD, user processes are not locked. No tcpdump running on hostD; hostD reciving packets about 46000 pps hostS sending packets about 46000 pps hostD CPU interrupt about 60 % while tcpdump running on hostD; hostD reciving packets about 44000 pps hostS sending packets about 44000 pps hostD CPU interrupt about 60 % Fix: Sorry, I don't know. How-To-Repeat: as above.
State Changed From-To: open->feedback Can you reproduce this problem with newer releases?
> Can you reproduce this problem with newer releases? > http://www.FreeBSD.org/cgi/query-pr.cgi?pr=16510 Hi, I update Host D to FreeBSD 4.4-RC. The problem is not occur on the releases. Please close the PR. Thank you. AMAGAI Yoshiji NUE
State Changed From-To: feedback->closed Submitter says that this problem is not reproducable with 4.4-RC.