Since I upgraded to e19, and had to start over with a config built from
scratch, it's using 20-30% CPU or so:

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND
27929 merlin    22   2 1245m 160m  49m S  31.8  1.0 463:32.66 enlightenment
27701 root      20   0 1272m 231m 218m S  12.7  1.5 199:35.56 Xorg   

Any idea how to find out what is burning so much CPU?

Going from accelerated OpenGL to software rendering, takes CPU down from 30%
to 13%. Better but still too high. Also, disappointing that HW rendering
taxes my CPU more than software.

>From my Xorg, kernel 3.19:
intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20141121
intel(0): SNA compiled: xserver-xorg-video-intel 2:2.99.917-1~exp1 (Vincent 
Cheng <[email protected]>)
intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 4600
intel(0): [DRI2] Setup complete
intel(0): [DRI2]   DRI driver: i965
intel(0): [DRI2]   VDPAU driver: i965
intel(0): direct rendering: DRI2 enabled
intel(0): hardware support for Present enabled
AIGLX: enabled GLX_MESA_copy_sub_buffer
AIGLX: enabled GLX_ARB_create_context
AIGLX: enabled GLX_ARB_create_context_profile
AIGLX: enabled GLX_EXT_create_context_es2_profile
AIGLX: enabled GLX_INTEL_swap_event
AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control
AIGLX: enabled GLX_EXT_framebuffer_sRGB
AIGLX: enabled GLX_ARB_fbconfig_float
AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
AIGLX: enabled GLX_ARB_create_context_robustness
AIGLX: Loaded and initialized i965
GLX: Initialized DRI2 GL provider for screen 0



It seems busy on this filehandle:
enlighten 27929 merlin   28u   CHR              226,0      0t0       1117 
/dev/dri/card0

Strace shows it's a tight loop like this:
[pid 21309]      0.000087 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000030 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000028 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83766})
[pid 21309]      0.016312 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\330\303\0\0Hm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000033 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000028 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000026 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000024 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000025 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83517})
[pid 21309]      0.016541 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\373\4\1\0Im\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000032 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000029 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000034 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000025 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000024 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83543})
[pid 21309]      0.016527 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\37F\1\0Jm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000039 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000039 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000038 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000027 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000031 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83547})
[pid 21309]      0.016532 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0D\207\1\0Km\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000061 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000043 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000029 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000031 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83595})
[pid 21309]      0.016475 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0l\310\1\0Lm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000060 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000132 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000045 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000057 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000036 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83714})
[pid 21309]      0.016363 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\207\t\2\0Mm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000043 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000031 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000031 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000034 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83540})
[pid 21309]      0.016545 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\261J\2\0Nm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000030 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000034 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000058 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000034 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000035 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83603})
[pid 21309]      0.016455 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\317\213\2\0Om\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000031 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000027 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000026 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000026 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000050 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83526})
[pid 21309]      0.016612 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\370\314\2\0Pm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000049 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000026 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000032 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000029 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83610})
[pid 21309]      0.016481 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\36\16\3\0Qm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000085 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000038 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000058 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000027 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000029 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83620})
[pid 21309]      0.016488 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0FO\3\0Rm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000143 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000039 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000092 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000036 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83738})
[pid 21309]      0.016357 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0d\220\3\0Sm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000046 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000063 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000027 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000026 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000025 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83667})
[pid 21309]      0.016404 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\206\321\3\0Tm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000079 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000037 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000036 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000029 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000034 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83588})
[pid 21309]      0.016587 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\262\22\4\0Um\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000080 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000034 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000035 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0
[pid 21309]      0.000044 select(29, [28], [], [], {0, 100000}) = 1 (in [28], 
left {0, 83656})
[pid 21309]      0.016428 read(28, "\1\0\0\0 
\0\0\0\0\0\0\0\0\0\0\0\263\263\4\0\324S\4\0Vm\230\0\0\0\0\0", 1024) = 32
[pid 21309]      0.000063 write(6, "\4\0\0\0", 4) = 4
[pid 21309]      0.000050 write(6, "*\0\0\0", 4) = 4
[pid 21309]      0.000035 futex(0x7fa4407b4540, FUTEX_WAKE_PRIVATE, 1) = 1
[pid 21309]      0.000033 ioctl(28, 0xc018643a, 0x7fa42fee5b60) = 0

-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/  

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