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Unix/Linux

Unix/Linux

Unix/Linux

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dddddddddtime<br />

dd timeddddddddddddddddddddddddddddd<br />

dddddddddddddddddddddddddddddddd<br />

CPUddddCPUdddd userdsysduserddddddddddddd<br />

dddddddddddddsysddddddddddddddddddd<br />

ddddddd<br />

user+sysdddddddddddd CPUdddddddddddd CPU<br />

dddddddddddddddddddddddddddddddddd<br />

dddddddddddddddddddddddddddddddddd<br />

ddddd CPUdddddddddd<br />

ddddddddddddddd CPUdddddddddd<br />

real−(user+sys)<br />

ddddddddddddddddd<br />

real∗number of processors−(user+sys)<br />

ddd<br />

$ time ./myprog<br />

ddd (ddddddd) <strong>Unix</strong>/<strong>Linux</strong>dddddddd 2009d12d 84 / 173

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