small polish
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John Cupitt
parent
e0b9b3cd5c
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45c8be3db6
147
TODO
147
TODO
@ -3,106 +3,83 @@
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see http://blog.tube42.se/?p=1225
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for i in {0..11}; do sudo cpufreq-set -f 1600000 -c $i; done
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for i in {0..3}; do sudo cpufreq-set -f 2.5GHz -c $i; done
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-r doesn't seem to work
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-r doesn't seem to work
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verify with
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cpufreq-info | more
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with cpu locked at 1.6 GHz
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$ time vips sharpen k2.v x.v --radius 20 --vips-concurrency=1
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real 0m2.232s
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user 0m2.212s
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sys 0m0.036s
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$ time vips sharpen k2.v x.v --radius 20 --vips-concurrency=2
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real 0m1.295s
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user 0m2.448s
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sys 0m0.060s
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=1
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real 0m2.760s
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user 0m2.768s
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sys 0m0.024s
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=2
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real 0m1.558s
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user 0m2.988s
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sys 0m0.060s
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- lock CPUs at 2.5GHz
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=1
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real 0m1.687s
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user 0m1.694s
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sys 0m0.028s
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=2
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real 0m0.967s
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user 0m1.876s
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sys 0m0.028s
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1.75x speedup
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=4
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real 0m0.864s
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user 0m3.175s
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sys 0m0.060s
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1.95x speedup
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- floating CPUs
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=1
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real 0m1.395s
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user 0m1.414s
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sys 0m0.016s
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=2
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real 0m0.841s
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user 0m1.626s
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sys 0m0.028s
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1.65x speedup
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=4
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real 0m0.755s
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user 0m2.759s
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sys 0m0.048s
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1.85x speedup
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1.687 vs 1.395 is about a 20% speedup ... turbo-boost!
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git master, -o2, --enable-debug=no
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=1
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real 0m1.404s
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user 0m1.419s
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sys 0m0.023s
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$ time vips sharpen k2.jpg x.jpg --radius 20 --vips-concurrency=2
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real 0m0.870s
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user 0m1.659s
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sys 0m0.036s
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$ time vips sharpen k2.jpg x.jpg --radius 20
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real 0m0.760s
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user 0m2.726s
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sys 0m0.069s
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two cores gets a 1.404 / 0.870 = 1.61x speedup
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turbo-boost is 20%, so if 1 core were 20% slower, it'd be 1.685
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1.685 / 0.870 = 1.94x speedup
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(check this, use MHz in tubo and non-turbo)
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for four threads, we add 2.726 - 1.659 = 1.067 cpu but only get another 15%
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off the wall-clock time
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john@bambam ~/pics $ time vips sharpen k2.jpg x.jpg --radius 20 --vips-profile
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$ time vips sharpen k2.v x.v --radius 20 --vips-profile
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recording profile in vips-profile.txt
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real 0m0.758s
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user 0m2.768s
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sys 0m0.032s
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john@bambam ~/pics $ vipsprofile
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real 0m1.187s
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user 0m4.167s
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sys 0m0.116s
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$ vipsprofile
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reading from vips-profile.txt
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loaded 5885 events
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last time = 0.710619
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name alive wait% work% unk%
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worker (0x7f66000008c0) 0 0.0003 67.7 0 32.3
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worker (0x7f66100008c0) 1 0.00037 37.2 0 62.8
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worker (0x7f66080008c0) 2 0.00032 93.5 0 6.54
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worker (0x7f660c0008c0) 3 0.00033 86.8 0 13.2
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worker (0x7f66080008c0) 4 0.00023 63.8 0 36.2
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worker (0x7f661000a360) 5 0.00024 96.7 0 3.33
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worker (0x7f660c0008c0) 6 0.00042 78.1 0 21.9
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worker (0x7f66000012d0) 7 0.00025 85 0 15
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worker (0x7f660c011450) 8 0.0001 30.7 0 69.3
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worker (0x7f661000a360) 9 0.00011 89.7 0 10.3
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worker (0x7f6608011850) 10 0.00012 93.2 0 6.78
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worker (0x7f66000012d0) 11 0.00023 14.1 8.55 77.4
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worker (0x7f661000a360) 12 0.00013 47.2 0 52.8
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worker (0x7f6608011850) 13 0.00011 91.2 0 8.77
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worker (0x7f660c011430) 14 0.00015 12.9 0 87.1
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worker (0x7f6600009fa0) 15 0.00019 45.7 0 54.3
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worker (0x7f660c011450) 16 0.00011 90.4 0 9.65
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worker (0x7f6600009f80) 17 0.00017 5.81 4.65 89.5
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worker (0x7f661000a1f0) 18 0.00013 93.6 0 6.4
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worker (0x7f6608011850) 19 0.00011 35.8 0 64.2
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worker (0x7f65fc0008c0) 20 0.69 0.453 95.7 3.83
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worker (0x7f65f80008c0) 21 0.69 0.333 96.9 2.75
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worker (0x7f660c011450) 22 0.69 0.288 97.1 2.57
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worker (0x7f661000a1f0) 23 0.69 0.127 97.2 2.63
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wbuffer (0x7f66000011c0) 24 0.7 98 0 1.98
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wbuffer (0x7f660800fcd0) 25 0.7 97.7 0 2.32
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main (0x1e7e200) 26 0.74 93.7 0 6.31
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loaded 3781 events
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last time = 1.120263
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name alive wait% work% unknown%
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worker 20 1.1 0.19 98.7 1.09
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worker 21 1.1 0.0292 98.1 1.9
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worker 22 1.1 0.0228 98 1.96
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worker 23 1.1 0.124 97.9 1.94
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wbuffer 24 1.1 98.9 1.14 0.00236
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wbuffer 25 1.1 98.9 1.15 0.00209
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main 26 1.2 93.5 0 6.54
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writing to vips-profile.svg
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$ eog vips-profile.svg
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@ -198,6 +198,8 @@ vips_sharpen_build( VipsObject *object )
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int ix1, ix2, ix3;
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int i;
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VIPS_GATE_START( "vips_sharpen_build: build" );
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if( VIPS_OBJECT_CLASS( vips_sharpen_parent_class )->build( object ) )
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return( -1 );
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@ -291,6 +293,8 @@ vips_sharpen_build( VipsObject *object )
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vips_image_write( t[6], sharpen->out ) )
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return( -1 );
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VIPS_GATE_STOP( "vips_sharpen_build: build" );
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return( 0 );
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}
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@ -226,6 +226,7 @@ vips__init( const char *argv0 )
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* directly.
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*/
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vips__thread_gate_start( "init: main" );
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vips__thread_gate_start( "init: startup" );
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/* Try to discover our prefix.
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*/
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@ -309,6 +310,8 @@ vips__init( const char *argv0 )
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done = TRUE;
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vips__thread_gate_stop( "init: startup" );
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return( 0 );
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}
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@ -380,6 +380,7 @@ vips_operation_new( const char *name )
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_( "class \"%s\" not found" ), name );
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return( NULL );
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}
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operation = VIPS_OPERATION( g_object_new( type, NULL ) );
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VIPS_DEBUG_MSG( "vips_operation_new: %s (%p)\n", name, operation );
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@ -296,7 +296,7 @@ def draw_event(ctx, event):
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xbearing, ybearing, twidth, theight, xadvance, yadvance = \
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ctx.text_extents(event.gate_name)
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ctx.move_to(left + width / 2 - twidth / 2, top + theight)
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ctx.move_to(left + width / 2 - twidth / 2, top + 3 * BAR_HEIGHT)
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ctx.set_source_rgb(1.00, 0.83, 0.00)
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ctx.show_text(event.gate_name)
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