On Sun, Aug 28, 2016 at 10:20:08AM -0700, Adrian Chadd wrote: Hi, thanks for answer!
> Hi, > > There are some no brainers here so far(tm): > > working from the bottom up: > > * yeah, the ixgbe locking is a bit silly. Kip's work with iflib and > converting ixgbe to use that instead of its own locking for managing > things should remove the bottom two locks I think no MFC to stbale/10 planed? > * 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 # netstat -rn Routing tables Internet: Destination Gateway Flags Netif Expire default 37.220.36.1 UGS lagg0 37.220.36.0/24 link#6 U lagg0 37.220.36.11 link#6 UHS lo0 127.0.0.1 link#5 UH lo0 Internet6: Destination Gateway Flags Netif Expire ::/96 ::1 UGRS lo0 ::1 link#5 UH lo0 ::ffff:0.0.0.0/96 ::1 UGRS lo0 fe80::/10 ::1 UGRS lo0 fe80::%lo0/64 link#5 U lo0 fe80::1%lo0 link#5 UHS lo0 ff01::%lo0/32 ::1 U lo0 ff02::/16 ::1 UGRS lo0 ff02::%lo0/32 ::1 U lo0 > 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. > > kernel`vm_object_madvise+0x39e > kernel`vm_map_madvise+0x3bb > kernel`sys_madvise+0x82 > kernel`amd64_syscall+0x40f > kernel`0xffffffff806c8bbb > 97389657 > > .. something's doing frequent madvise calls, which may be causing some In any case, this is create load on different CPU cores. > hilarity between threads. What's the server? nginx? yes > Then the rest of the big entries are just a combination of rtentry > locking, tcp timer locking, zfs locking and madvise locking. There's > some sowakeup locking there as well, from the socket producer/consumer > locking. > > > > > -adrian _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"