Bug#292269: clock-applet: excessive CPU usage
Lee Revell
Lee Revell <rlrevell@joe-job.com>, 292269@bugs.debian.org
Tue, 25 Jan 2005 21:03:27 -0500
Package: gnome-panel
Version: 2.8.2-1
Severity: normal
clock-applet consumes way more CPU than it should, about 0.3% on my
600Mhz machine.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3000 rlrevell 16 0 17920 8540 6636 S 0.3 1.9 0:29.79 clock-applet
I strace'd it and it does the following over and over:
open("/etc/localtime", O_RDONLY) = 34
fstat64(34, {st_mode=S_IFREG|0644, st_size=1267, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb72e0000
read(34, "TZif\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\4\0\0\0\4\0"...,
4096) = 1267
close(34) = 0
munmap(0xb72e0000, 4096) = 0
ioctl(3, FIONREAD, [0]) = 0
gettimeofday({1106704619, 598478}, NULL) = 0
poll([{fd=18, events=POLLIN}, {fd=3, events=POLLIN}, {fd=23,
events=POLLIN|POLLPRI}, {fd=25, events=POLLIN}, {fd=27,
events=POLLIN|POLLPRI}, {fd=28, events=POLLIN|POLLPRI}, {fd=29,
events=POLLIN|POLLPRI}, {fd=31, events=POLLIN|POLLPRI}, {fd=30,
events=POLLIN|POLLPRI}, {fd=32, events=POLLIN|POLLPRI}, {fd=33,
events=POLLIN|POLLPRI}], 11, 0) = 0
write(3, "5\20\4\0\335Y\240\1\34\0\240\1e\0\30\0;\3\5\0 \0\240\1"...,
328) = 328
ioctl(3, FIONREAD, [0]) = 0
gettimeofday({1106704619, 603133}, NULL) = 0
poll([{fd=18, events=POLLIN}, {fd=3, events=POLLIN}, {fd=23,
events=POLLIN|POLLPRI}, {fd=25, events=POLLIN}, {fd=27,
events=POLLIN|POLLPRI}, {fd=28, events=POLLIN|POLLPRI}, {fd=29,
events=POLLIN|POLLPRI}, {fd=31, events=POLLIN|POLLPRI}, {fd=30,
events=POLLIN|POLLPRI}, {fd=32, events=POLLIN|POLLPRI}, {fd=33,
events=POLLIN|POLLPRI}], 11, 985) = 0
gettimeofday({1106704620, 589779}, NULL) = 0
time([1106704620]) = 1106704620
time(NULL) = 1106704620
open("/usr/share/zoneinfo/Universal", O_RDONLY) = 34
fstat64(34, {st_mode=S_IFREG|0644, st_size=56, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb72e0000
read(34, "TZif\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\1\0"...,
4096) = 56
close(34) = 0
munmap(0xb72e0000, 4096) = 0
time([1106704620]) = 1106704620
Why in the heck do you need to open, mmap, munmap, and close
/etc/localtime and /usr/share/zoneinfo/Universal every second? There
has *got* to be a more efficient way.
Lee
-- System Information:
Debian Release: 3.1
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.11-rc1-RT-V0.7.35-01
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages gnome-panel depends on:
ii gnome-control-center 1:2.8.1-3 The GNOME Control Center for GNOME
ii gnome-desktop-data 2.8.1-2 Common files for GNOME 2 desktop a
ii gnome-panel-data 2.8.2-1 Common files for GNOME 2 panel
ii gnome-session 2.8.1-5 The GNOME 2 Session Manager
ii libart-2.0-2 2.3.16-6 Library of functions for 2D graphi
ii libatk1.0-0 1.8.0-4 The ATK accessibility toolkit
ii libbonobo2-0 2.8.0-4 Bonobo CORBA interfaces library
ii libbonoboui2-0 2.8.0-2 The Bonobo UI library
ii libc6 2.3.2.ds1-20 GNU C Library: Shared libraries an
ii libecal6 1.0.3-2 Client library for evolution calen
ii libedataserver3 1.0.3-2 Utily library for evolution data s
ii libgconf2-4 2.8.1-4 GNOME configuration database syste
ii libglade2-0 1:2.4.1-2 library to load .glade files at ru
ii libglib2.0-0 2.6.1-3 The GLib library of C routines
ii libgnome-desktop-2 2.8.1-2 Utility library for loading .deskt
ii libgnome2-0 2.8.0-6 The GNOME 2 library - runtime file
ii libgnomecanvas2-0 2.8.0-1 A powerful object-oriented display
ii libgnomeui-0 2.8.0-3 The GNOME 2 libraries (User Interf
ii libgnomevfs2-0 2.8.3-9 The GNOME virtual file-system libr
ii libgtk2.0-0 2.4.14-2 The GTK+ graphical user interface
ii libice6 4.3.0.dfsg.1-10 Inter-Client Exchange library
ii liborbit2 1:2.10.2-1.1 libraries for ORBit2 - a CORBA ORB
ii libpanel-applet2-0 2.8.2-1 Library for GNOME 2 Panel applets
ii libpango1.0-0 1.6.0-3 Layout and rendering of internatio
ii libpng12-0 1.2.8rel-1 PNG library - runtime
ii libpopt0 1.7-5 lib for parsing cmdline parameters
ii libsm6 4.3.0.dfsg.1-10 X Window System Session Management
ii libstartup-notification0 0.7-1 library for program launch feedbac
ii libwnck4 2.8.1-3 Window Navigator Construction Kit
ii libx11-6 4.3.0.dfsg.1-10 X Window System protocol client li
ii libxext6 4.3.0.dfsg.1-10 X Window System miscellaneous exte
ii libxml2 2.6.11-5 GNOME XML library
ii xlibs 4.3.0.dfsg.1-10 X Keyboard Extension (XKB) configu
ii zlib1g 1:1.2.2-4 compression library - runtime
-- no debconf information