06-23-2009
Quote:
Originally Posted by
achenle
You can use nanosleep() to get sleep times less than one second.
But I'll also question why you're doing this. There doesn't seem to be any point to just counting for the sake of counting.
I should have added that you'd need to compile your own C program to run that.
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LEARN ABOUT CENTOS
papi_start
PAPI_start(3) PAPI PAPI_start(3)
NAME
PAPI_start -
Start counting hardware events in an event set.
SYNOPSIS
Detailed Description
C Interface:
#include <papi.h>
int PAPI_start( int EventSet );
Parameters:
EventSet -- an integer handle for a PAPI event set as created by PAPI_create_eventset
Return values:
PAPI_OK
PAPI_EINVAL -- One or more of the arguments is invalid.
PAPI_ESYS -- A system or C library call failed inside PAPI, see the errno variable.
PAPI_ENOEVST -- The EventSet specified does not exist.
PAPI_EISRUN -- The EventSet is currently counting events.
PAPI_ECNFLCT -- The underlying counter hardware can not count this event and other events in the EventSet simultaneously.
PAPI_ENOEVNT -- The PAPI preset is not available on the underlying hardware.
PAPI_start starts counting all of the hardware events contained in the previously defined EventSet. All counters are implicitly set to zero
before counting. Assumes an initialized PAPI library and a properly added event set.
Example:
* int EventSet = PAPI_NULL;
* long long values[2];
* int ret;
*
* ret = PAPI_create_eventset(&EventSet);
* if (ret != PAPI_OK) handle_error(ret);
*
* // Add Total Instructions Executed to our EventSet
* ret = PAPI_add_event(EventSet, PAPI_TOT_INS);
* if (ret != PAPI_OK) handle_error(ret);
*
* // Start counting
* ret = PAPI_start(EventSet);
* if (ret != PAPI_OK) handle_error(ret);
* poorly_tuned_function();
* ret = PAPI_stop(EventSet, values);
* if (ret != PAPI_OK) handle_error(ret);
* printf("%lld
",values[0]);
*
See Also:
PAPI_create_eventset PAPI_add_event PAPI_stop
Author
Generated automatically by Doxygen for PAPI from the source code.
Version 5.2.0.0 Tue Jun 17 2014 PAPI_start(3)