I have this problem, especially when viewing webpages with video/flash
in them. I ran the line from the previous comment, which indicates that
it's caused by intel_drv.so. Attached the perf.data file.
Standard out:
# ========
# captured on: Thu May 2 15:39:02 2013
# hostname : .....
# os release : 3.8.0-19-generic
# perf version : 3.8.8
# arch : x86_64
# nrcpus online : 4
# nrcpus avail : 4
# cpudesc : Intel(R) Core(TM) i5-2450M CPU @ 2.50GHz
# cpuid : GenuineIntel,6,42,7
# total memory : 5997284 kB
# cmdline : /usr/bin/perf_3.8.0-19 record -f -g -a sleep 60
# event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0,
excl_usr = 0, excl_kern = 0, excl_host = 0, excl_guest = 1, precise_ip = 0, id
= { 22, 23, 24, 25 }
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# pmu mappings: cpu = 4, software = 1, tracepoint = 2, uncore_cbox_0 = 6,
uncore_cbox_1 = 7, breakpoint = 5
# ========
#
# Samples: 351K of event 'cycles'
# Event count (approx.): 217205974361
#
# Overhead Command Shared Object
Symbol
# ........ ............... ...............................
..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
#
78.14% Xorg intel_drv.so [.]
0x000000000003781f
|
--- 0x7f6a18cac81f
** Attachment added: "perf.data.gz"
https://bugs.launchpad.net/ubuntu/+source/cairo/+bug/1073372/+attachment/3662652/+files/perf.data.gz
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https://bugs.launchpad.net/bugs/1073372
Title:
Xorg produces high CPU usage, slow gnome-terminal
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