I wrote this kernel module to test the correctness of ndelay() function.
Kernel mdoule:
The output of dmesg:
Here my question is I'm trying to measure 100ns delay, but I'm getting output in 300's. One of the possible things that can happen is storing the value of ktime_get() into end module is taking some time. So can anyone please suggest me alternative or where I'm going wrong.
HI
I have a Red Hat Enterprise with Real Time kernel.
Are you aware if there are C functions for this kernel or some code/library for this OS for measuring time more lightweight than clock_gettime and gettimeofday? THe hardware I have is NUMA.
Reading forums I found gethrtime but it is... (1 Reply)
I have a Java program. I want to measure the total memory used by the program, especially the peak memory. Is there a way to do it?
I have tried utilities like time (which returns 0) and top (which is not very useful) as the program does not run for long.
Can anyone suggest a way to do this?... (5 Replies)
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Can anyone please help me in measuring the system call timings!
How do I do it if I have to measure the timing of an operation, say getpid system call.
What different functions can I use for that and what would be the difference using each of them?
Thanx! (3 Replies)