RDTSC命令を使い、いまどきのCPUでクロックを測定してみる
WEBJul 30, 2022 · 経過時間の測定には LinuxCのサイトを参考に gettimeofday ()を使用。 この関数は、マイクロ秒単位でしか計測できないのが注意点らしい。 measure_func ()を …
c - rdtsc命令で特定のプログラムの実行時間をクロック計測で ...
WEBJul 23, 2019 · rdtsc命令でクロック計測したいのは、行列の掛け算なのですが、現在実行しているプログラムをどのように使えば計測したいプログラムの実行時間を計測するこ …
c++ - Calculate system time using rdtsc - Stack Overflow
WEBFeb 13, 2017 · My main objective is to avoid the need to perform system call every time I want to know the system time. On Linux, read time (7) then use clock_gettime (2) which …
Time Stamp Counter - Wikipedia
The Time Stamp Counter (TSC) is a 64-bit register present on all x86 processors since the Pentium. It counts the number of CPU cycles since its reset. The instruction RDTSC returns the TSC in EDX:EAX. In x86-64 mode, RDTSC also clears the upper 32 bits of RAX and RDX. Its opcode is 0F 31. Pentium competitors such as the Cyrix 6x86 did not always have a TSC and may consider RDTSC a…
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rdtsc(Read Time Stamp Counter)のクラス化 | 豆知識 ...
WEBJul 17, 2012 · rdtscとは Read Time Stamp Counter である。 これは何かというと、 CPUクロックに基づく相対時刻の計測 のページを引用させてもらうと. Intel x86系 …
Measure the execution time using RDTSC - Intel Communities
WEBMar 3, 2022 · I have been trying to use RDTSC and RDTSCP to measure the execution time of some code under test. I found the article “How to Benchmark Code Execution …
RDTSC — Read Time-Stamp Counter - felixcloutier.com
WEBReads the current value of the processor’s time-stamp counter (a 64-bit MSR) into the EDX:EAX registers. The EDX register is loaded with the high-order 32 bits of the MSR …
RDTSCP — Read Time-Stamp Counter and Processor ID
WEBReads the current value of the processor’s time-stamp counter (a 64-bit MSR) into the EDX:EAX registers and also reads the value of the IA32_TSC_AUX MSR (address …
RDTSC() for measuring latency of an operation - Intel ...
WEBOct 26, 2010 · rdtsc counts front side or QPI buss clock ticks, and multiplies those by the default multiplier (presumably in accordance with 3Ghz in your case). The last Intel CPU …
rdtsc関数によるクロックサイクル数計測 #C - Qiita
WEBJan 24, 2022 · rdtsc関数によるクロックサイクル数計測. C. Last updated at 2022-01-23 Posted at 2022-01-13. はじめに. C言語でプログラムを作った際にクロックサイクル数 …
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