Login delay

[Neale Ferguson]

Hi,
 I see in the release notes a reference to a delay when logging on (or
su¹ing). I assume you know the cause, in case an strace shows a timeout when
polling on some dbus communication:

36237 12:44:18.552016 connect(3, {sa_family=AF_FILE,
path="/var/run/dbus/system_bus_socket"}, 33) = 0
36237 12:44:18.554508 fcntl(3, F_GETFL) = 0x2 (flags O_RDWR)
36237 12:44:18.555690 fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0
36237 12:44:18.557008 geteuid()         = 0
36237 12:44:18.558264 getsockname(3, {sa_family=AF_FILE, NULL}, [2]) = 0
36237 12:44:18.562788 poll([{fd=3, events=POLLOUT}], 1, 0) = 1 ([{fd=3,
revents=POLLOUT}])
36237 12:44:18.564702 send(3, "\0", 1, MSG_NOSIGNAL) = 1
36237 12:44:18.568214 send(3, "AUTH EXTERNAL 30\r\n", 18, MSG_NOSIGNAL) = 18
36237 12:44:18.570001 poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3,
revents=POLLIN}])
36237 12:44:18.573616 read(3, "OK 30473130807de44448e948ea00000"..., 2048) =
37
36237 12:44:18.575757 poll([{fd=3, events=POLLOUT}], 1, -1) = 1 ([{fd=3,
revents=POLLOUT}])
36237 12:44:18.577083 send(3, "NEGOTIATE_UNIX_FD\r\n", 19, MSG_NOSIGNAL) =
19
36237 12:44:18.581047 poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3,
revents=POLLIN}])
36237 12:44:18.582391 read(3, "AGREE_UNIX_FD\r\n", 2048) = 15
36237 12:44:18.583652 poll([{fd=3, events=POLLOUT}], 1, -1) = 1 ([{fd=3,
revents=POLLOUT}])
36237 12:44:18.585250 send(3, "BEGIN\r\n", 7, MSG_NOSIGNAL) = 7
36237 12:44:18.589419 poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1
([{fd=3, revents=POLLOUT}])
36237 12:44:18.590870 sendmsg(3, {msg_name(0)=NULL,
msg_iov(2)=[{"B\1\0\1\0\0\0\0\0\0\0\1\0\0\0n\1\1o\0\0\0\0\25/org/fre"...,
128}, {"", 0}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 128
36237 12:44:18.612217 poll([{fd=3, events=POLLIN}], 1, 25000) = 1 ([{fd=3,
revents=POLLIN}])
36237 12:44:18.614895 recvmsg(3, {msg_name(0)=NULL,
msg_iov(1)=[{"B\2\1\1\0\0\0\n\0\0\0\1\0\0\0=\6\1s\0\0\0\0\5:1.60\0\0\0"...,
2048}], msg_controllen=0, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) =
260
36237 12:44:18.624871 recvmsg(3, 0x3ffffd901d0, MSG_CMSG_CLOEXEC) = -1
EAGAIN (Resource temporarily unavailable)
36237 12:44:18.645198 sendmsg(3, {msg_name(0)=NULL,
msg_iov(2)=[{"B\1\0\1\0\0\0\\\0\0\0\2\0\0\0\226\1\1o\0\0\0\0\27/org/fre"...,
168}, {"\0\0\0\0\0\0\215\215\0\0\0\2su\0\0\0\0\0\3tty\0\0\0\0\0\0\0\0\0"...,
92}], msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 260
36237 12:44:18.648527 poll([{fd=3, events=POLLIN}], 1, 25000) = 0 (Timeout)
36237 12:44:43.684151 open("/etc/localtime", O_RDONLY) = 4

Neale