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# ./timertest
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./timertest
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starting UHRT calibration...
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kernel reports High Resolution Timer resolution: 1 ns
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clock_gettime: actual resolution (nothing took): 8.380000000e-07 seconds
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clock_gettime: actual resolution (nothing took): 1.118000000e-06 seconds
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gettimez: nothing took: 1.395994332e-06 seconds
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gettimez: nothing took: 1.396983862e-06 seconds
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macro gettimez: nothing took: 8.380156942e-07 seconds
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macro gettimez: nothing took: 1.118052751e-06 seconds
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timer value is: 517387.000246579 seconds
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timer value is: 525789.000380273 seconds
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timer value is: 517387.000256078 seconds
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timer value is: 525789.000391168 seconds
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usleep(+0.000010000 s) took: 0.000069283 seconds
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usleep(+0.050000000 s) took: 0.050064185 seconds
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relative nanosleep(+0.000010000 s) took: 0.000065092 seconds
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relative nanosleep(+0.050000000 s) took: 0.050059715 seconds
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absolute nanosleep(+0.000010000 s) took: 0.000063974 seconds
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absolute nanosleep(+0.050000000 s) took: 0.050058877 seconds
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polling 5us took: 5.028000000e-06 seconds
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polling 5us took: 5.867000000e-06 seconds
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polling 5ms took: 4.999239000e-03 seconds
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polling 5ms took: 8.044038000e-03 seconds
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smartdelay 0 took: 0.000000000e+00 seconds
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smartdelay 0 took: -1.000000000e-09 seconds
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smartdelay 3e-6 took: 2.794000000e-06 seconds
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smartdelay 3e-6 took: 3.072000000e-06 seconds
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smartdelay 1e-5 took: 1.005800000e-05 seconds
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smartdelay 1e-5 took: 8.940000000e-06 seconds
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smartdelay 5e-3 took: 5.188090000e-03 seconds
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smartdelay 5e-3 took: 4.999797000e-03 seconds
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smartdelay 0.1s took: 0.099999302 seconds
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smartdelay 0.1s took: 0.099999860 seconds
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smartdelay 1s took: 1.000000558 seconds
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smartdelay 1s took: 0.999999162 seconds
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Calibrating Ultra High Resolution Timing mode variables
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Calibrating UHRT mode variables (8.38e-06 s)...reached 109442 ppm accuracy.
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Calibrating UHRT mode variables (1.118e-05 s)...reached 75757 ppm accuracy.
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granularities: rdtsc->"47", gettime->"1923", smartdelay->"268"
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granularities: rdtsc->"44", gettime->"1859", smartdelay->"105"
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CPU clock speed is 2096778042.959 Hz +- 2.29475e+08 Hz
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CPU clock speed is 2194901610.018 Hz +- 1.66279e+08 Hz
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UHRT resolution is 4.76922201355e-10 s
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UHRT resolution is 4.55601287746e-10 s
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Calibrating UHRT mode variables (8.38e-05 s)...reached 10287.4 ppm accuracy.
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Calibrating UHRT mode variables (0.0001118 s)...reached 7402.93 ppm accuracy.
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granularities: rdtsc->"16", gettime->"1893", smartdelay->"55"
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granularities: rdtsc->"31", gettime->"1812", smartdelay->"27"
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CPU clock speed is 2195835322.196 Hz +- 2.25895e+07 Hz
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CPU clock speed is 2189338103.757 Hz +- 1.62075e+07 Hz
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UHRT resolution is 4.55407557157e-10 s
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UHRT resolution is 4.56759053471e-10 s
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Calibrating UHRT mode variables (0.000838 s)...reached 1033.31 ppm accuracy.
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Calibrating UHRT mode variables (0.001118 s)...reached 731.156 ppm accuracy.
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granularities: rdtsc->"16", gettime->"1903", smartdelay->"55"
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granularities: rdtsc->"47", gettime->"1796", smartdelay->"11"
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CPU clock speed is 2197673031.026 Hz +- 2.27088e+06 Hz
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CPU clock speed is 2197122540.250 Hz +- 1.60644e+06 Hz
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UHRT resolution is 4.55026742323e-10 s
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UHRT resolution is 4.55140749631e-10 s
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Calibrating UHRT mode variables (0.1 s)...reached 8.39637 ppm accuracy.
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Calibrating UHRT mode variables (0.1 s)...reached 9.73285 ppm accuracy.
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granularities: rdtsc->"16", gettime->"1847", smartdelay->"71"
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granularities: rdtsc->"46", gettime->"2141", smartdelay->"44"
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CPU clock speed is 2199760970.000 Hz +- 18470 Hz
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CPU clock speed is 2199767290.000 Hz +- 21410 Hz
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UHRT resolution is 4.54594846276e-10 s
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UHRT resolution is 4.5459354021e-10 s
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Calibrating UHRT mode variables (1 s)...reached 0.88146 ppm accuracy.
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Calibrating UHRT mode variables (1 s)...reached 0.846911 ppm accuracy.
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granularities: rdtsc->"32", gettime->"1939", smartdelay->"279"
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granularities: rdtsc->"31", gettime->"1863", smartdelay->"245"
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CPU clock speed is 2199760141.000 Hz +- 1939 Hz
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CPU clock speed is 2199759903.000 Hz +- 1863 Hz
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UHRT resolution is 4.54595017594e-10 s
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UHRT resolution is 4.54595066778e-10 s
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tsc ticks: 6599314822
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tsc ticks: 6599313890
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hrt sessiontime: 3.000014806 s
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hrt sessiontime: 3.000015086 s
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CPU clock speed is 2199760750.781 Hz +- 647.663 Hz
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CPU clock speed is 2199760234.806 Hz +- 635.997 Hz
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hrt_ticksync took: 2.06113380977e-06 s
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UHRT: nothing took: 2.682110894e-08 seconds
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hrt_ticksync took: 2.1884204147e-06 s
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UHRT: a clock_gettime takes: 8.682765775e-07 seconds
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hrt_secsync took: 0.0997846546579 s
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UHRT: 2 clock_gettime takes: 2.342073784e-06 seconds
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hrt_secsync took: 0.899349708692 s
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hrt_ticksync took: 1.92566470287e-06 s
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hrt_secsync took: 0.499883120212 s
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hrt_ticksync took: 1.94475769568e-06 s
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hrt_secsync took: 0.0999858133154 s
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hrt_secsync took: 0.899897835805 s
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hrt_secsync took: 0.49990098533 s
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# cat /proc/cpuinfo
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processor	: 0
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vendor_id	: AuthenticAMD
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cpu family	: 15
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model		: 47
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model name	: AMD Athlon(tm) 64 Processor 3500+
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stepping	: 2
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cpu MHz		: 2199.673
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cache size	: 512 KB
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fpu		: yes
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fpu_exception	: yes
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cpuid level	: 1
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wp		: yes
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flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow up rep_good nopl pni lahf_lm
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bogomips	: 4399.34
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TLB size	: 1024 4K pages
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clflush size	: 64
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cache_alignment	: 64
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address sizes	: 40 bits physical, 48 bits virtual
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power management: ts fid vid ttp tm stc