如何使用linux获取时钟周期的值？
[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中的时间戳与linux中的时钟周期相同。我知道如何获取时间戳，但我现在不知道如何以时钟周期为单位。谁能告诉我两者有什么区别？有人可以给我一个小时钟周期的例子吗？
Looking forward for your reply.
期待您的回复。
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.
额外：我试图使用simplescalar模拟器在比萨架构中添加组装指令。根据我的指示，我应该访问时钟周期并将其存储在寄存器中。
1 个解决方案
#1
1
Well, there are:
嗯，有：
- Ticks. Modern kernels don't use them.
- 蜱。现代内核不使用它们。
- 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.
- 时间戳计数器，这是您可能希望用于高分辨率时间测量，但您必须了解如何使用它进行无偏差测量。
- Clocks, portable
clock_gettime, nanosecond-resolution, often good enough for everything. - 时钟，便携式clock_gettime，纳秒分辨率，通常足以满足一切要求。
If you want to get access to CPU performance registers, you can start with Intel® Performance Counter Monitor inside your programs.
如果要访问CPU性能寄存器，可以从程序内部的英特尔®性能计数器监视器开始。
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。
