Mark Heitmann wrote:
/ Did you compile with Solaris's own LDAP library or with OpenLDAP? />/ I'm using iPlanet DS and Solaris's LDAP library. / People have had different kinds of problems with Solaris LDAP
library. You could try if OpenLDAP works better.I have the same problem also with openLDAP (compiled with gcc 3.4.3 on Solaris 10 x86 (Update 4)). When I build dovecot with ldap-support, the dovecot-auth process gets 100% CPU time, without ldap-support, the problem doesn't exists.
The machine is a Sun Fire X2200 M2 with an AMD Opteron processor on actual patch level. Does somebody have a solution for this problem (pollsys) under Solaris 10?
Greets, Mark
What does truss report the verbose arguments to pollsys to be?
eg:
# truss -v pollsys -p pgrep dovecot-auth
I get something like this:
: root@otter[1]; truss -v pollsys -p pgrep dovecot-auth
pollsys(0x08094A48, 14, 0x08047B38, 0x00000000) (sleeping...)
fd=5 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=7 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=0 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=3 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=9 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=11 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=14 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=10 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=12 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=15 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=13 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=16 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=17 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=18 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
timeout: 1.999000000 sec
pollsys(0x08094A48, 14, 0x08047B38, 0x00000000) = 0
fd=5 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=7 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=0 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=3 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=9 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=11 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=14 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=10 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=12 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=15 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=13 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=16 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=17 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=18 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
timeout: 1.999000000 sec
pollsys(0x08094A48, 14, 0x08047B38, 0x00000000) = 0
fd=5 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=7 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=0 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=3 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=9 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=11 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=14 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=10 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=12 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=15 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=13 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=16 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=17 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
fd=18 ev=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL rev=0
timeout: 0.000000000 sec
Now, why it sometimes has a 0 second time isn't clear, but it does. I'm curious whether or not yours always has a zero second timeout?
You can find out where the pollsys calls are coming from w/ dtrace: : root@otter[12]; dtrace -n 'syscall::pollsys:entry/execname == "dovecot-auth"/{ustack(10)}'
1 4595 pollsys:entry
libc.so.1__pollsys+0x7 libc.so.1poll+0x52
dovecot-authio_loop_handler_run+0x35 dovecot-authio_loop_run+0x21
dovecot-authmain+0x3fe dovecot-auth_start+0x80
1 4595 pollsys:entry
libc.so.1__pollsys+0x7 libc.so.1poll+0x52
dovecot-authio_loop_handler_run+0x35 dovecot-authio_loop_run+0x21
dovecot-authmain+0x3fe dovecot-auth_start+0x80
1 4595 pollsys:entry
libc.so.1__pollsys+0x7 libc.so.1poll+0x52
dovecot-authio_loop_handler_run+0x35 dovecot-authio_loop_run+0x21
dovecot-authmain+0x3fe dovecot-auth_start+0x80
1 4595 pollsys:entry
libc.so.1__pollsys+0x7 libc.so.1poll+0x52
dovecot-authio_loop_handler_run+0x35 dovecot-authio_loop_run+0x21
dovecot-authmain+0x3fe dovecot-auth_start+0x80
- Bart