[Nouveau] [Bug 90482] Xorg take 100% CPU when using multiple independent screen configuration

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat May 16 13:53:05 PDT 2015


https://bugs.freedesktop.org/show_bug.cgi?id=90482

--- Comment #3 from Matti Nykyri <matti.nykyri at iki.fi> ---
and strace Xorg(PID 2954):
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 56000}) = 1 (in [12], left {264, 55981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 56000}) = 1 (in [12], left {264, 55981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 55000}) = 1 (in [12], left {264, 54982})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 55000}) = 1 (in [12], left {264, 54981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 55000}) = 1 (in [12], left {264, 54981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 54000}) = 1 (in [12], left {264, 53982})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 54000}) = 1 (in [12], left {264, 53982})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 54000}) = 1 (in [12], left {264, 53981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 53000}) = 1 (in [12], left {264, 52981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 53000}) = 1 (in [12], left {264, 52981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 53000}) = 1 (in [12], left {264, 52981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 52000}) = 1 (in [12], left {264, 51981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 52000}) = 1 (in [12], left {264, 51981})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 51000}) = 1 (in [12], left {264, 50982})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 51000}) = 1 (in [12], left {264, 50983})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 51000}) = 1 (in [12], left {264, 50983})
2954  select(256, [1 3 5 10 11 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81], NULL,
NULL, {264, 51000}) = 1 (in [12], left {264, 50983})

cat /proc/2954/fd:
0 l-wx------ 1 root root 64 May 16 23:47 0 -> /var/log/Xorg.0.log
0 lrwx------ 1 root root 64 May 16 23:47 1 -> socket:[12196]
0 lrwx------ 1 root root 64 May 16 23:47 10 -> /dev/dri/card0
0 lrwx------ 1 root root 64 May 16 23:47 11 -> socket:[1845]
0 lrwx------ 1 root root 64 May 16 23:47 12 -> socket:[1858]
0 lrwx------ 1 root root 64 May 16 23:47 13 -> /dev/dri/card0
0 lrwx------ 1 root root 64 May 16 23:47 14 -> /dev/input/event1
0 lrwx------ 1 root root 64 May 16 23:47 15 -> /dev/input/event0
0 lrwx------ 1 root root 64 May 16 23:47 16 -> /dev/input/event2
0 lrwx------ 1 root root 64 May 16 23:47 17 -> /dev/input/event3
0 lrwx------ 1 root root 64 May 16 23:47 18 -> socket:[2848]
....etc

lsof -p 2954:
X       2954 root    0w      REG                8,2   164675     262153
/var/log/Xorg.0.log
X       2954 root    1u     unix 0xffff880214864840      0t0      12196
@/tmp/.X11-unix/X0
X       2954 root    2w      REG                8,2    56795     262596
/var/log/kdm.log
X       2954 root    3u     unix 0xffff880214864c80      0t0      12197
/tmp/.X11-unix/X0
X       2954 root    4r      REG                8,2    31614     524293
/usr/lib64/xorg/protocol.txt
X       2954 root    5u  netlink                         0t0       2823
KOBJECT_UEVENT
X       2954 root    6w      REG                0,3        0 4026531961
/proc/mtrr
X       2954 root    7w      REG                0,3        0 4026531961
/proc/mtrr
X       2954 root    8u      CHR                4,7      0t0       2080
/dev/tty7
X       2954 root    9u      CHR              10,63      0t0       1026
/dev/vga_arbiter
X       2954 root   10u      CHR              226,0      0t0       1044
/dev/dri/card0
X       2954 root   11u     sock                0,6      0t0       1845
protocol: NETLINK
X       2954 root   12u  netlink                         0t0       1858
KOBJECT_UEVENT
X       2954 root   13u      CHR              226,0      0t0       1044
/dev/dri/card0
X       2954 root   14u      CHR              13,65      0t0       1082
/dev/input/event1
X       2954 root   15u      CHR              13,64      0t0      10912
/dev/input/event0
X       2954 root   16u      CHR              13,66      0t0       2447
/dev/input/event2
X       2954 root   17u      CHR              13,67      0t0       1323
/dev/input/event3
X       2954 root   18u     unix 0xffff8800d9839100      0t0       2848
@/tmp/.X11-unix/X0

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