today i was comparing the performance of some netmap-related code on FreeBSD and Linux (RELENG_9 vs 3.2) and i was surprised to see that our system calls are significantly slower. On comparable hardware (i7-2600k vs E5-1650) the syscall getppid() takes about 95ns on FreeBSD and 38ns on linux.
(i make sure not to use gettimeofday(), which in linux is through vdso, and getpid(), which is cached by glibc). Any idea on why there is this difference and whether/how we can reduce it ? cheers luigi _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
