Bug 974342
| Summary: | "idle" gnome-shell consumes much CPU time | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | John Reiser <jreiser> | ||||
| Component: | gnome-shell | Assignee: | Owen Taylor <otaylor> | ||||
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 19 | CC: | admiller, apmanol, charlieb-fedora-bugzilla, collura, davidshumway, drago01, fmuellner, htl10, jreiser, otaylor, samkraju, stefano.biagiotti, walters | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i686 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2015-02-17 15:34:17 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
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glxinfo shows: name of display: :0 display: :0 screen: 0 direct rendering: Yes server glx vendor string: SGI server glx version string: 1.4 client glx vendor string: Mesa Project and SGI client glx version string: 1.4 GLX version: 1.4 OpenGL vendor string: VMware, Inc. OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.3, 128 bits) OpenGL version string: 2.1 Mesa 9.2.0 OpenGL shading language version string: 1.30 /var/log/Xorg.0.log: X.Org X Server 1.14.1 Release Date: 2013-04-17 [ 50.363] X Protocol Version 11, Revision 0 [ 50.363] Build Operating System: 2.6.32-358.2.1.el6.x86_64 [ 50.363] Current Operating System: Linux localhost 3.9.4-301.fc19.i686 #1 SMP Tue Jun 4 00:51:19 UTC 2013 i686 [ 50.363] Kernel command line: root=live:LABEL=LIVE rootfstype=auto ro rd.live.image rd.luks=0 rd.md=0 rd.dm=0 cgroup_disable=memory slub_debug=- [ 50.367] Build Date: 05 June 2013 10:30:34PM [ 50.367] Build ID: xorg-x11-server 1.14.1-4.fc19 [ 50.367] Current version of pixman: 0.30.0 ... [ 51.129] (II) RADEON: Driver for ATI Radeon chipsets: installed packages: mesa-dri-drivers-9.2-0.7.20130528.fc19.i686 xorg-x11-drv-ati-7.1.0-5.20130408git6e74aacc5.fc19.i686 xorg-x11-server-Xorg-1.14.1-4.fc19.i686 (In reply to John Reiser from comment #1) > glxinfo shows: > name of display: :0 > display: :0 screen: 0 > direct rendering: Yes > server glx vendor string: SGI > server glx version string: 1.4 > client glx vendor string: Mesa Project and SGI > client glx version string: 1.4 > GLX version: 1.4 > OpenGL vendor string: VMware, Inc. > OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.3, 128 bits) This means you are using software rendering, so high CPU usage is expected. Which GPU do you have? (Output of lspci) The output of lspci is in the Additional Info of the original Description: $ lspci -nn 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI RV280 [Radeon 9200 PRO] [1002:5960] (rev 01) 01:00.1 Display controller [0380]: Advanced Micro Devices [AMD] nee ATI RV280 [Radeon 9200 PRO] (Secondary) [1002:5940] (rev 01) Why is there high CPU usage when the display is not changing? The only visible change is the clock display HH:MM, once per minute, Same device, same behaviour. 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI RV280 [Radeon 9200 PRO] [1002:5960] (rev 01) 01:00.1 Display controller [0380]: Advanced Micro Devices [AMD] nee ATI RV280 [Radeon 9200 PRO] (Secondary) [1002:5940] (rev 01) I have faster CPU than John Reiser. model name : Intel(R) Pentium(R) 4 CPU 3.00GHz Top in gnome-terminal shows gnome-shell 60% and X 8%. 1790 ste 20 0 557548 171676 38188 S 60,78 8,313 16:33.89 gnome-shell 1551 root 20 0 53124 20804 9104 S 7,928 1,007 2:57.95 X 2334 ste 20 0 158436 16216 11556 S 3,634 0,785 0:03.44 gnome-terminal- Everything is too much slow to play with. Same issue here but the CPU usage is higher (160% in top!!) :
$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller [8086:0100] (rev 09)
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0102] (rev 09)
$cat /proc/cpuinfo
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
$ glxinfo
name of display: :0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
GLX_OML_swap_method, GLX_SGIS_multisample, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGI_make_current_read
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_create_context_robustness, GLX_ARB_framebuffer_sRGB,
GLX_ARB_get_proc_address, GLX_ARB_multisample,
GLX_EXT_create_context_es2_profile, GLX_EXT_framebuffer_sRGB,
GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer,
GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control,
GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group,
GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync
GLX version: 1.4
GLX extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_MESA_multithread_makecurrent, GLX_OML_swap_method,
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_SGI_make_current_read
OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.3, 256 bits)
OpenGL version string: 2.1 Mesa 9.2.0-devel
OpenGL shading language version string: 1.30
strace -fcp 7227
Process 7227 attached with 14 threads
^CProcess 7227 detached
Process 7231 detached
Process 7233 detached
Process 7234 detached
Process 7235 detached
Process 7236 detached
Process 7237 detached
Process 7238 detached
Process 7239 detached
Process 7240 detached
Process 7242 detached
Process 7243 detached
Process 7244 detached
Process 7800 detached
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
87.77 57.642879 610 94426 2181 futex
9.94 6.529090 65 100833 poll
1.13 0.740000 740000 1 restart_syscall
0.95 0.621830 7 83797 26698 recvfrom
0.16 0.107403 7 15968 brk
0.06 0.036398 0 84462 writev
0.00 0.000051 0 3003 1005 read
0.00 0.000022 0 2025 write
0.00 0.000000 0 10 6 open
0.00 0.000000 0 7 close
0.00 0.000000 0 4 fstat
0.00 0.000000 0 3 lseek
0.00 0.000000 0 4 mmap
0.00 0.000000 0 4 munmap
0.00 0.000000 0 2 sendmsg
0.00 0.000000 0 4 recvmsg
0.00 0.000000 0 1 timerfd_create
0.00 0.000000 0 1 timerfd_settime
0.00 0.000000 0 2 eventfd2
------ ----------- ----------- --------- --------- ----------------
100.00 65.677673 384557 29890 total
Ditto. 01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RS690M [Radeon Xpress 1200/1250/1270] FWIW, top isn't a good thing to run for this issue, since it re-draws screen continuously - and we are talking about loading up the graphic sub-system. similar deadly slow lag with: toshiba satellite L75D-A7283 with A4-5000 apu lspci: 00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Root Complex 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kabini [Radeon HD 8330] ran across this in my var log messages when looking into slow virtual machines: 'kernel: [ 30.549832] kvm: disabled by bios' could this be thread related? fedora20 system still criplingly slow for me but the gnome-shell effect on idle seems to be improved from consuming an average of '60% total cpu' ( core0:60%, core1:60%, core2:60%, core3: 60% ) to '20% total cpu' ( core0:20%, core1:20%, core2:20%, core3: 20% ) starting with kernel-3.10.0-0.rc0.git10.1.fc21.x86_64 with glxinfo 'gallium on llvm' -> 'gallium on amd kabini'.
there was a kernel in between which ran idle (always higher on 2nd core) with about '30% total cpu' ( core0:20%, core1:60%, core2:20%, core3: 20% ) before suspend with '70% total cpu' ( core0:70%, core1:70%, core2:70%, core3:70% ) after resume from suspend. the 'top' command showed a change in %cpu usage in gnome-shell {before suspend: (xorg=70%totalcpu and gnome-shell=10%totalcpu), after resume: (xorg=40%totalcpu and gnome-shell=180%totalcpu)}.
kernel-3.13.0-0.rc2.git0.1.fc21.x86_64 is a little more stable and the %cpu at idle seems to be down to about 10% (both before and after a suspend/resume cycle)
I have similar problem; fc20, kernel 3.12.6-300.fc20.x86_64, Intel GM45. gnome-shell is using about 30% CPU, on an idle system.
At least part of the problem is repeated reading from an fd which has no data available. That shouldn't happen when poll() is used. Excerpt of strace shown below.
...
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Mobile Intel® GM45 Express Chipset
OpenGL version string: 2.1 Mesa 9.2.5
OpenGL shading language version string: 1.20
...
poll([{fd=33, events=POLLIN}, {fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=6, events=POLLIN}, {fd=30, events=POLLIN}, {fd=13, events=POLLIN}, {fd=9, events=POLLIN}, {fd=11, events=POLLIN}, {fd=24, events=POLLIN}, {fd=27, events=POLLIN}, {fd=18, events=POLLIN}], 11, 0) = 0 (Timeout)
read(5, 0x7fffc1825fd0, 16) = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(6, 0x9274a4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=33, events=POLLIN}, {fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=6, events=POLLIN}, {fd=30, events=POLLIN}, {fd=13, events=POLLIN}, {fd=9, events=POLLIN}, {fd=11, events=POLLIN}, {fd=24, events=POLLIN}, {fd=27, events=POLLIN}, {fd=18, events=POLLIN}], 11, 8) = 1 ([{fd=6, revents=POLLIN}])
recvfrom(6, "Z\0026\304Gv\21\1Hv\21\1:\317\330\v\n\0?\0\337\2\262\1\376\377K\0\363\2\373\1", 4096, 0, NULL, NULL) = 32
recvfrom(6, 0x9274a4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
write(5, "\1\0\0\0\0\0\0\0", 8) = 8
recvfrom(6, 0x9274a4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(6, 0x9274a4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=33, events=POLLIN}, {fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=6, events=POLLIN}, {fd=30, events=POLLIN}, {fd=13, events=POLLIN}, {fd=9, events=POLLIN}, {fd=11, events=POLLIN}, {fd=24, events=POLLIN}, {fd=27, events=POLLIN}, {fd=18, events=POLLIN}], 11, 6) = 1 ([{fd=5, revents=POLLIN}])
recvfrom(6, 0x9274a4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=33, events=POLLIN}, {fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=6, events=POLLIN}, {fd=30, events=POLLIN}, {fd=13, events=POLLIN}, {fd=9, events=POLLIN}, {fd=11, events=POLLIN}, {fd=24, events=POLLIN}, {fd=27, events=POLLIN}, {fd=18, events=POLLIN}], 11, 5) = 1 ([{fd=5, revents=POLLIN}])
read(5, "\1\0\0\0\0\0\0\0", 16) = 8
recvfrom(6, 0x9274a4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=33, events=POLLIN}, {fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=6, events=POLLIN}, {fd=30, events=POLLIN}, {fd=13, events=POLLIN}, {fd=9, events=POLLIN}, {fd=11, events=POLLIN}, {fd=24, events=POLLIN}, {fd=27, events=POLLIN}, {fd=18, events=POLLIN}], 11, 4) = 0 (Timeout)
read(5, 0x7fffc1825fd0, 16) = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(6, 0x9274a4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=33, events=POLLIN}, {fd=5, events=POLLIN}, {fd=3, events=POLLIN}, {fd=6, events=POLLIN}, {fd=30, events=POLLIN}, {fd=13, events=POLLIN}, {fd=9, events=POLLIN}, {fd=11, events=POLLIN}, {fd=24, events=POLLIN}, {fd=27, events=POLLIN}, {fd=18, events=POLLIN}], 11, 4) = 0 (Timeout)
poll([{fd=6, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=6, revents=POLLOUT}])
writev(6, [{"\216\3\4\0Hv\21\1\0\0\0\0\0\0\0\0+\0\1\0", 20}, {NULL, 0}, {"", 0}], 3) = 20
poll([{fd=6, events=POLLIN}], 1, 4294967295) = 1 ([{fd=6, revents=POLLIN}])
recvfrom(6, "\1\0028\304\0\0\0\0\206\342\205\2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 4096, 0, NULL, NULL) = 32
recvfrom(6, 0x9274a4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
ioctl(10, 0x400c645f, 0x7fffc1825af0) = 0
ioctl(10, 0xc0086457, 0x7fffc1825960) = 0
ioctl(10, VIDIOC_INT_RESET, 0x7fffc18259c0) = 0
ioctl(10, 0x4020645d, 0x7fffc18259c0) = 0
ioctl(10, 0xc0086457, 0x7fffc1825820) = 0
ioctl(10, VIDIOC_INT_RESET, 0x7fffc1825880) = 0
ioctl(10, 0x400c645f, 0x7fffc1825890) = 0
ioctl(10, 0xc0086457, 0x7fffc1825b40) = 0
ioctl(10, 0x400c645f, 0x7fffc1825b10) = 0
ioctl(10, 0x4020645d, 0x7fffc1825cb0) = 0
ioctl(10, 0x4020645d, 0x7fffc1825cb0) = 0
ioctl(10, 0x40406469, 0x7fffc1825c60) = 0
ioctl(10, VIDIOC_INT_RESET, 0x7fffc1825c00) = 0
ioctl(10, VIDIOC_INT_RESET, 0x7fffc1825c00) = 0
ioctl(10, VIDIOC_INT_RESET, 0x7fffc1825c50) = 0
ioctl(10, 0xc0086457, 0x7fffc1825c30) = 0
ioctl(10, VIDIOC_INT_RESET, 0x7fffc1825c90) = 0
ioctl(10, 0x400c645f, 0x7fffc1825d20) = 0
poll([{fd=6, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=6, revents=POLLOUT}])
writev(6, [{"\230\t\2\0\33\0\0\1", 8}], 1) = 8
poll([{fd=6, events=POLLIN}], 1, 4294967295) = 1 ([{fd=6, revents=POLLIN}])
recvfrom(6, "\1\0009\304\0\0\0\0.\0\0\0\231\342\351F\0\0\0\0y\320-\0\0\0\0\0\304K\0\0", 4096, 0, NULL, NULL) = 32
poll([{fd=6, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=6, revents=POLLOUT}])
writev(6, [{"\230\n\10\0\33\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\2\0\0\0\0\0\0\0\0\0\0\0", 32}], 1) = 32
poll([{fd=6, events=POLLIN}], 1, 4294967295) = 1 ([{fd=6, revents=POLLIN}])
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Created attachment 761061 [details] 30 seconds of strace output (gzipped) Description of problem: An "idle" gnome-shell on Fedora-Live-Desktop consumes too much CPU time:30% or more.ls Version-Release number of selected component (if applicable): gnome-shell-3.8.3-2.fc19.i686 How reproducible: every time Steps to Reproduce: 1. boot Fedora-Live-Desktop-i686-19-TC3-1 [Final] 2. run /usr/bin/top for 1/2 minute then quit 3. yum install strace 4. strace -o strace.ouit -p <PID_of_gnome-shell> Actual results: 'top' shows "idle" gnome-shell consumes 40% to 60% CPU on 1.6GHz machine. strace shows hundreds of kilobytes/second flowing through socket in an "idle" gnome-shell. This contributes to a 2-second lag for typing or clicking. Expected results: "Idle" gnome-shell consumes less than 3% CPU. Additional info: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 1.60GHz stepping : 4 microcode : 0x1e cpu MHz : 1614.422 cache size : 512 KB fdiv_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pebs bts bogomips : 3228.84 clflush size : 64 cache_alignment : 128 address sizes : 36 bits physical, 32 bits virtual power management: $ lspci -nn 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI RV280 [Radeon 9200 PRO] [1002:5960] (rev 01) 01:00.1 Display controller [0380]: Advanced Micro Devices [AMD] nee ATI RV280 [Radeon 9200 PRO] (Secondary) [1002:5940] (rev 01) but note that display is idle: no visible changes! Typical strace output: poll([{fd=6, events=POLLIN}], 1, -1) = 1 ([{fd=6, revents=POLLIN}]) recv(6, "\357\357\357\377\357\357\357\377\357\357\357\377\357\357\357\377\357\357\357\377\357\357\357\377\357\357\357\377\357\357\357\377"..., 2701360, 0) = 14032 recv(6, 0x9efaddd8, 2687328, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=6, events=POLLIN}], 1, -1) = 1 ([{fd=6, revents=POLLIN}]) recv(6, "'\3\1\377$\2\1\377$\2\2\377\37\1\2\377 \1\2\377!\1\2\377#\1\2\377(\5\1\377"..., 2687328, 0) = 16192 recv(6, 0x9efb1d18, 2671136, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=6, events=POLLIN}], 1, -1) = 1 ([{fd=6, revents=POLLIN}]) recv(6, "\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0"..., 2671136, 0) = 16192 recv(6, 0x9efb5c58, 2654944, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=6, events=POLLIN}], 1, -1) = 1 ([{fd=6, revents=POLLIN}]) recv(6, "\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0\355\355\355\0"..., 2654944, 0) = 16192 recv(6, 0x9efb9b98, 2638752, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=6, events=POLLIN}], 1, -1) = 1 ([{fd=6, revents=POLLIN}]) recv(6, "\355\355\355\0\353\353\353\2HFA\345\242\241\236h\317\317\316(64.\377\355\355\355\0\355\355\355\0"..., 2638752, 0) = 14032 recv(6, 0x9efbd268, 2624720, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=6, events=POLLIN}], 1, -1) = 1 ([{fd=6, revents=POLLIN}]) recv(6, "+\5\3\377+\5\3\377+\5\3\377+\5\3\377*\4\2\377+\5\1\377,\5\2\377+\5\3\377"..., 2624720, 0) = 16192 recv(6, 0x9efc11a8, 2608528, 0) = -1 EAGAIN (Resource temporarily unavailable)