Package: network-manager
Version: 1.14.4-4
Severity: normal
Dear Maintainer,
I've noticed network manager is consuming most of the cpu time on my
system. It seems to be caused by the connectivity checking code. The
symptoms are:
1. ltrace shows this repeating on and on:
exe->epoll_wait(15, 0xbfb0bba0, 1, 0)
= 0
exe->clock_gettime(0, 0xbfb0bb54, 1, 15)
= 0
exe->clock_gettime(1, 0xbfb0bb54, 1, 15)
= 0
exe->clock_gettime(7, 0xbfb0bb54, 1, 15)
= 0
exe->g_object_ref(0x15c1b58, 0x15adf20, 0x15a84b0, 0xb7a5acc6)
= 0x15c1b58
exe->g_io_channel_unix_get_fd(0x1629fb0, 0x15adf20, 0x15a84b0, 0xb7a5acc6)
= 20
exe->curl_multi_socket_action(0x15c4900, 20, 2, 0xbfb0bd88)
= 0
exe->curl_multi_info_read(0x15c4900, 0xbfb0bd80, 2, 0xbfb0bd88)
= 0
exe->g_object_ref(0x15c1b58, 0x1612440, 0x1640dc0, 0xb7a5acc6)
= 0x15c1b58
exe->g_io_channel_unix_get_fd(0x15e32b0, 0x1612440, 0x1640dc0, 0xb7a5acc6)
= 22
exe->curl_multi_socket_action(0x15c4900, 22, 2, 0xbfb0bd88)
= 0
exe->curl_multi_info_read(0x15c4900, 0xbfb0bd80, 2, 0xbfb0bd88)
= 0
exe->g_object_ref(0x15c1b58, 0, 0x1654880, 0xb7a5acc6)
= 0x15c1b58
exe->g_io_channel_unix_get_fd(0x1627080, 0, 0x1654880, 0xb7a5acc6)
= 24
exe->curl_multi_socket_action(0x15c4900, 24, 2, 0xbfb0bd88)
= 0
exe->curl_multi_info_read(0x15c4900, 0xbfb0bd80, 2, 0xbfb0bd88)
= 0
2. strace only shows incrementing and decrementing an eventfd, no
network activity or something.
poll([{fd=3, events=POLLIN}, {fd=6, events=POLLIN}, {fd=8,
events=POLLIN|POLLPRI}, {fd=12, events=POLLIN}, {fd=13, events=POLLIN}, {fd=14,
events=POLLIN}, {fd=15, events=POLLIN}, {fd=16, events=POLLIN}, {fd=17,
events=POLLIN}, {fd=20, events=POLLOUT}, {fd=22, events=POLLOUT}, {fd=24,
events=POLLOUT}], 12, 0) = 4 ([{fd=3, revents=POLLIN}, {fd=20,
revents=POLLOUT}, {fd=22, revents=POLLOUT}, {fd=24, revents=POLLOUT}])
read(3, "\6\0\0\0\0\0\0\0", 16) = 8
epoll_wait(15, [], 1, 0) = 0
clock_gettime(CLOCK_BOOTTIME, {tv_sec=124345, tv_nsec=994550347}) = 0
write(3, "\1\0\0\0\0\0\0\0", 8) = 8
write(3, "\1\0\0\0\0\0\0\0", 8) = 8
write(3, "\1\0\0\0\0\0\0\0", 8) = 8
write(3, "\1\0\0\0\0\0\0\0", 8) = 8
write(3, "\1\0\0\0\0\0\0\0", 8) = 8
write(3, "\1\0\0\0\0\0\0\0", 8) = 8
Note: fd 22 is
NetworkMa 20906 root 20u IPv4 2035553 0t0 TCP
debian:45852->senfter.debian.org:http (ESTABLISHED)
However the event loop doesn't seem to touch the connection in any
way. fds 20 and 24 are similar connections.
Do you have any ideas about this? I'm not very knowledgeable about curl,
but surely it shouldn't hog the glib main loop like that?
Regards
Jiri Palecek
-- System Information:
Debian Release: buster/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable-debug'), (500,
'testing-debug'), (500, 'unstable'), (1, 'experimental-debug'), (1,
'experimental')
Architecture: i386 (i686)
Kernel: Linux 4.19.0-3-686-pae (SMP w/2 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE,
TAINT_UNSIGNED_MODULE
Locale: LANG=cs_CZ, LC_CTYPE=cs_CZ (charmap=ISO-8859-2), LANGUAGE=cs_CZ
(charmap=ISO-8859-2)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages network-manager depends on:
ii adduser 3.116
ii dbus 1.12.12-1
ii init-system-helpers 1.56
ii libaudit1 1:2.8.4-2
ii libbluetooth3 5.49-4
ii libc6 2.28-6
ii libcurl3-gnutls 7.64.0-1
ii libglib2.0-0 2.58.3-1
ii libgnutls30 3.6.6-2
ii libjansson4 2.12-1
ii libmm-glib0 1.6.2-1
ii libndp0 1.6-1+b1
ii libnewt0.52 0.52.20-4
ii libnm0 1.14.4-4
ii libpam-systemd 240-5
ii libpolkit-agent-1-0 0.105-25
ii libpolkit-gobject-1-0 0.105-25
ii libpsl5 0.20.2-1
ii libreadline7 7.0-5
ii libselinux1 2.8-1+b1
ii libsystemd0 240-5
ii libteamdctl0 1.28-1
ii libudev1 240-5
ii libuuid1 2.33.1-0.1
ii lsb-base 10.2018112800
ii policykit-1 0.105-25
ii udev 240-5
ii wpasupplicant 2:2.6-18
Versions of packages network-manager recommends:
pn crda <none>
pn dnsmasq-base <none>
ii iptables 1.8.2-2+b1
ii isc-dhcp-client 4.4.1-2
pn modemmanager <none>
pn ppp <none>
Versions of packages network-manager suggests:
pn libteam-utils <none>
-- Configuration Files:
/etc/NetworkManager/NetworkManager.conf changed:
[main]
plugins=ifupdown,keyfile
no-auto-default=e0:cb:4e:c2:58:50,
[ifupdown]
managed=false
-- no debconf information
