如何使用linux獲取時鍾周期的值？
[英]How to get the value of clock cycles in ticks using linux?
Taking the timestamp in linux is same as clock cycles in ticks for linux. I know how to get the timestamp but I dont now how to take the clock cycles in ticks. could someone tell me what is the difference between the two ?? could someone give me a small example for clock cycles in ticks ??
采用linux中的時間戳與linux中的時鍾周期相同。我知道如何獲取時間戳，但我現在不知道如何以時鍾周期為單位。誰能告訴我兩者有什么區別？有人可以給我一個小時鍾周期的例子嗎？
Looking forward for your reply.
期待您的回復。
extra : Am trying to add assembly instructions for timing in pisa architecture using simplescalar simulator. For my instructions i should access clock cycles and store it in the register.
額外：我試圖使用simplescalar模擬器在比薩架構中添加組裝指令。根據我的指示，我應該訪問時鍾周期並將其存儲在寄存器中。
1 个解决方案
#1
1
Well, there are:
嗯，有：
- Ticks. Modern kernels don't use them.
- 蜱。現代內核不使用它們。
- Timestamp counter, this is what you may like to use for high-resolution time measurements, but you have to understand how to make unbiased measurements with it.
- 時間戳計數器，這是您可能希望用於高分辨率時間測量，但您必須了解如何使用它進行無偏差測量。
- Clocks, portable
clock_gettime, nanosecond-resolution, often good enough for everything. - 時鍾，便攜式clock_gettime，納秒分辨率，通常足以滿足一切要求。
If you want to get access to CPU performance registers, you can start with Intel® Performance Counter Monitor inside your programs.
如果要訪問CPU性能寄存器，可以從程序內部的英特爾®性能計數器監視器開始。
注意！
本站翻译的文章，版权归属于本站，未经许可禁止转摘，转摘请注明本文地址：https://www.itdaan.com/blog/2014/06/10/309321978110a867ad09685419e72bea.html。
