Public bug reported:
The gnome-shell process gets occasionally stuck in a busy loop using
100% CPU for a few minutes. strace shows that it repeatedly invokes
sched_yield.
This seem to be triggered by opening (certain) context menus. It started
out in Eclipse, but now also affects the Firefox address-bar dropdown.
Backtrace:
#0 0x00007fbe03b413f7 in sched_yield () at
../sysdeps/unix/syscall-template.S:81
#1 0x00007fbdeb9fdf31 in nouveau_fence_wait (fence=0x3a3a3b0) at
../../../../../../src/gallium/drivers/nouveau/nouveau_fence.c:212
#2 0x00007fbdeb9177c2 in st_finish (st=st@entry=0x22c1c50) at
../../../../src/mesa/state_tracker/st_cb_flush.c:101
#3 0x00007fbdeb9177f0 in st_glFinish (ctx=<optimized out>) at
../../../../src/mesa/state_tracker/st_cb_flush.c:136
#4 0x00007fbe011b1e82 in _cogl_winsys_wait_for_gpu (onscreen=0x25bb4d0) at
./winsys/cogl-winsys-glx.c:1577
#5 _cogl_winsys_onscreen_swap_region (onscreen=0x25bb4d0,
user_rectangles=<optimized out>, n_rectangles=<optimized out>) at
./winsys/cogl-winsys-glx.c:1794
#6 0x00007fbe011a7341 in cogl_onscreen_swap_region (onscreen=0x25bb4d0,
rectangles=rectangles@entry=0x7ffcc12a2080, n_rectangles=n_rectangles@entry=1)
at ./cogl-onscreen.c:337
#7 0x00007fbe04f7d662 in clutter_stage_cogl_redraw (stage_window=0x2159b80) at
./cogl/clutter-stage-cogl.c:641
#8 0x00007fbe04fe1887 in clutter_stage_do_redraw (stage=0x254d790) at
./clutter-stage.c:1184
#9 _clutter_stage_do_update (stage=0x254d790) at ./clutter-stage.c:1242
#10 0x00007fbe04fc8028 in master_clock_update_stages (master_clock=0x2492a40,
stages=0x7305590) at ./clutter-master-clock.c:457
#11 clutter_clock_dispatch (source=<optimized out>, callback=<optimized out>,
user_data=<optimized out>) at ./clutter-master-clock.c:589
#12 0x00007fbe042a8e04 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007fbe042a9048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007fbe042a930a in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fbe059ee021 in meta_run () from /usr/lib/libmutter.so.0
#16 0x0000000000401d11 in main (argc=1, argv=0x7ffcc12a2488) at main.c:439
---
ApportVersion: 2.14.1-0ubuntu3.18
Architecture: amd64
CurrentDesktop: GNOME
DisplayManager: lightdm
DistroRelease: Ubuntu 14.04
GsettingsChanges:
org.gnome.shell.calendar show-weekdate true
org.gnome.desktop.interface toolkit-accessibility true
org.gnome.desktop.interface gtk-im-module 'gtk-im-context-simple'
org.gnome.desktop.interface clock-show-date true
InstallationDate: Installed on 2014-04-01 (597 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
Package: gnome-shell 3.10.4-0ubuntu5.2
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 3.13.0-68.111-generic 3.13.11-ckt27
Tags: trusty
Uname: Linux 3.13.0-68-generic x86_64
UpgradeStatus: Upgraded to trusty on 2014-07-23 (484 days ago)
UserGroups: adm cdrom dip disco lpadmin plugdev postgres sambashare sudo
wireshark
_MarkForUpload: True
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-collected trusty
** Tags added: apport-collected trusty
** Description changed:
The gnome-shell process gets occasionally stuck in a busy loop using
100% CPU for a few minutes. strace shows that it repeatedly invokes
sched_yield.
This seem to be triggered by opening (certain) context menus. It started
out in Eclipse, but now also affects the Firefox address-bar dropdown.
Backtrace:
#0 0x00007fbe03b413f7 in sched_yield () at
../sysdeps/unix/syscall-template.S:81
#1 0x00007fbdeb9fdf31 in nouveau_fence_wait (fence=0x3a3a3b0) at
../../../../../../src/gallium/drivers/nouveau/nouveau_fence.c:212
#2 0x00007fbdeb9177c2 in st_finish (st=st@entry=0x22c1c50) at
../../../../src/mesa/state_tracker/st_cb_flush.c:101
#3 0x00007fbdeb9177f0 in st_glFinish (ctx=<optimized out>) at
../../../../src/mesa/state_tracker/st_cb_flush.c:136
#4 0x00007fbe011b1e82 in _cogl_winsys_wait_for_gpu (onscreen=0x25bb4d0) at
./winsys/cogl-winsys-glx.c:1577
#5 _cogl_winsys_onscreen_swap_region (onscreen=0x25bb4d0,
user_rectangles=<optimized out>, n_rectangles=<optimized out>) at
./winsys/cogl-winsys-glx.c:1794
#6 0x00007fbe011a7341 in cogl_onscreen_swap_region (onscreen=0x25bb4d0,
rectangles=rectangles@entry=0x7ffcc12a2080, n_rectangles=n_rectangles@entry=1)
at ./cogl-onscreen.c:337
#7 0x00007fbe04f7d662 in clutter_stage_cogl_redraw (stage_window=0x2159b80)
at ./cogl/clutter-stage-cogl.c:641
#8 0x00007fbe04fe1887 in clutter_stage_do_redraw (stage=0x254d790) at
./clutter-stage.c:1184
#9 _clutter_stage_do_update (stage=0x254d790) at ./clutter-stage.c:1242
#10 0x00007fbe04fc8028 in master_clock_update_stages (master_clock=0x2492a40,
stages=0x7305590) at ./clutter-master-clock.c:457
#11 clutter_clock_dispatch (source=<optimized out>, callback=<optimized out>,
user_data=<optimized out>) at ./clutter-master-clock.c:589
#12 0x00007fbe042a8e04 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007fbe042a9048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007fbe042a930a in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fbe059ee021 in meta_run () from /usr/lib/libmutter.so.0
#16 0x0000000000401d11 in main (argc=1, argv=0x7ffcc12a2488) at main.c:439
+ ---
+ ApportVersion: 2.14.1-0ubuntu3.18
+ Architecture: amd64
+ CurrentDesktop: GNOME
+ DisplayManager: lightdm
+ DistroRelease: Ubuntu 14.04
+ GsettingsChanges:
+ org.gnome.shell.calendar show-weekdate true
+ org.gnome.desktop.interface toolkit-accessibility true
+ org.gnome.desktop.interface gtk-im-module 'gtk-im-context-simple'
+ org.gnome.desktop.interface clock-show-date true
+ InstallationDate: Installed on 2014-04-01 (597 days ago)
+ InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64
(20131016.1)
+ Package: gnome-shell 3.10.4-0ubuntu5.2
+ PackageArchitecture: amd64
+ ProcVersionSignature: Ubuntu 3.13.0-68.111-generic 3.13.11-ckt27
+ Tags: trusty
+ Uname: Linux 3.13.0-68-generic x86_64
+ UpgradeStatus: Upgraded to trusty on 2014-07-23 (484 days ago)
+ UserGroups: adm cdrom dip disco lpadmin plugdev postgres sambashare sudo
wireshark
+ _MarkForUpload: True
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https://bugs.launchpad.net/bugs/1517901
Title:
gnome-shell spins over sched_yield with 100% CPU
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