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Full Discussion: lightweight function for measuring time ( better than clock_getime )
Operating Systems Linux Red Hat lightweight function for measuring time ( better than clock_getime ) Post 302539401 by manustone on Sunday 17th of July 2011 07:07:16 AM
Old 07-17-2011
lightweight function for measuring time ( better than clock_getime )
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 available on Solaris only; this last spends few cycles compared to clock_gettime and gettimeofday eating the CPU.

Do you know if for Red Hat someomene did something similar?
My distro is the following

THanks a lot

Code:
     uname -a
     Linux lndbxdev01 2.6.24.7-108.el5rt #1 SMP PREEMPT RT 
     Mon Mar 23 10:58:10 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

     cat/etc/redhat-release
     Red Hat Enterprise Linux Server release 5.3 (Tikanga)

 

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