Hi! On 13:43 Sun 30 Nov , Mulyadi Santosa wrote: > Hi All ... > 2. I suggest to use TSC (TimeStamp Clock) if you use x86 (32 and 64 > bit). I don't say gettimeofday() won't meet your need, but I think > reading TSC register is the fastest code path you can get to measure > timing. This sounds great. See http://en.wikipedia.org/wiki/Time_Stamp_Counter This seems to have some implications: - The timestamp counter is not synchronized on all CPUs/cores ==> set the CPU affinity before starting the Benchmark. - The time unit is CPU clock cycles or something else (processor dependant), not microseconds. Frequency scaling and maybe APM_CPU_IDLE are probably not such a great idea... -Michi -- programing a layer 3+4 network protocol for mesh networks see http://michaelblizek.twilightparadox.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
