On Sun, Aug 28, 2016 at 10:20:08AM -0700, Adrian Chadd wrote:
> * the rtalloc1_fib thing - that's odd, because it shouldn't be
> contending there unless there's some temporary redirect that's been
> learnt. What's the routing table look like on your machine? I Remember
> investigating the rtentry reference counting a while ago and concluded
> that .. it's terrible, and one specific corner case was checking for
> routes from redirects. I'll look at my notes again and see what I
> find.
JFYI:
kernel`rtalloc1_fib+0x6d
kernel`rtalloc_ign_fib+0xcc
kernel`ip_output+0x3a5
kernel`tcp_output+0x1852
kernel`tcp_timer_rexmt+0x60e
kernel`softclock_call_cc+0x17b
kernel`softclock+0x94
kernel`intr_event_execute_handlers+0xab
kernel`ithread_loop+0x96
kernel`fork_exit+0x9a
kernel`0xffffffff806c8e0e
176868370
kernel`ip_output+0x3a5 is sys/netinet/ip_output.c:282
/*
* We want to do any cloning requested by the link layer,
* as this is probably required in all cases for correct
* operation (as it is for ARP).
*/
if (rte == NULL) {
#ifdef RADIX_MPATH
rtalloc_mpath_fib(ro,
ntohl(ip->ip_src.s_addr ^ ip->ip_dst.s_addr),
inp ? inp->inp_inc.inc_fibnum : M_GETFIB(m));
#else
in_rtalloc_ign(ro, 0,
inp ? inp->inp_inc.inc_fibnum : M_GETFIB(m));
#endif
rte = ro->ro_rt;
}
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