Re: named spinning

[Gary Duzan <gary%duzan.org@localhost>]

In Message <j6is6p$osp$1%dough.gmane.org@localhost>,
   christos%astron.com@localhost (Christos Zoulas)wrote:

=>In article <20111005225443.25B23115CF5%xen1.duzan.org@localhost>,
=>Gary Duzan  <gary%duzan.org@localhost> wrote:
=>>In Message <j6hlcc$a2m$1%dough.gmane.org@localhost>,
=>>   christos%astron.com@localhost (Christos Zoulas)wrote:
=>>
=>>=>In article <20111005114906.2A9A911549C%xen1.duzan.org@localhost>,
=>>=>Gary Duzan  <gary%duzan.org@localhost> wrote:
=>>=>>   Since upgrading current on Sunday my named has been sucking CPU.
=>>=>>Restarting it doesn't help, tcpdump shows no significant domain
=>>=>>traffic on any interface, and a ktruss shows it just looping:
=>>=>>
=>>=>> [ ... ]
=>>=>>
=>>=>>   Anyone else seeing this? Thanks.
=>>=>
=>>=>Yes, can you compile with debugging symbols, attach in gdb and see where
=>>=>it is spinning?
=>>
=>>(gdb) where
=>>#0  0x00007f7ff5838cda in _sys___kevent50 () from /usr/lib/libc.so.12
=>>#1  0x00007f7ff6005eb1 in __kevent50 () from /usr/lib/libpthread.so.1
=>>#2  0x00007f7ff641d189 in watcher (uap=0x7f7ff7b2a000) at
=>>/usr/src/external/bsd/bind/dist/lib/isc/unix/socket.c:5694
=>>#3  0x00007f7ff60099d5 in pthread_setcancelstate () from
=>>/usr/lib/libpthread.so.1
=>>#4  0x00007f7ff5876350 in ___lwp_park50 () from /usr/lib/libc.so.12
=>>#5  0x00007f7ff4000000 in ?? ()
=>>#6  0x00007f7ff7fff2c0 in ?? ()
=>>#7  0x0000000111110001 in ?? ()
=>>#8  0x0000000033330003 in ?? ()
=>>#9  0x0000000000000000 in ?? ()
=>
=>This is the event loop Can you print cc and *manager?

   Had to rebuild without -O2 to get cc.

(gdb) frame 2
#2  0x00007f7ff6423b99 in watcher (uap=0x7f7ff7b2a000) at 
/usr/src/external/bsd/bind/dist/lib/isc/unix/socket.c:800
800             REQUIRE(counterid != -1);
(gdb) print cc
$1 = 1
(gdb) print *manager
$2 = {common = {impmagic = 1229942119, magic = 1098083687, methods = 
0x7f7ff66621d0}, mctx = 0x7f7ff7b05120, lock = {ptm_magic = 858980355, 
ptm_errorcheck = 0 '\0', ptm_pad1 = "\000\000", ptm_interlock = 0 '\0', 
ptm_pad2 = "\000\000", ptm_owner = 0x0,
    ptm_waiters = 0x0, ptm_recursed = 0, ptm_spare2 = 0x0}, fdlock = 
0x7f7ff7b72000, stats = 0x7f7ff7b3d000, kqueue_fd = 8, nevents = 64, events = 
0x7f7ff7b7e000, maxsocks = 4096, pipe_fds = {5, 7}, fds = 0x7f7ff7b66000, 
fdstate = 0x7f7ff7b6e000, socklist = {
    head = 0x7f7ff7b53000, tail = 0x7f7ff2a6c6c0}, reserved = 512, watcher = 
0x7f7ff3c00000, shutdown_ok = {ptc_magic = 1431633925, ptc_lock = 0 '\0', 
ptc_waiters = {ptqh_first = 0x0, ptqh_last = 0x7f7ff7b2a0b0}, ptc_mutex = 0x0, 
ptc_private = 0x0}, maxudp = 0}
(gdb) 

                                        Gary Duzan