system.cache: Cache

In RBigData/pbdPAPI: Programming with Big Data --- Interface to PAPI

Description

Measuring cache misses, hits, accesses, and reads.

Usage

system.cache(expr, type = "miss", events = "total", gcFirst = TRUE,
  burnin = TRUE)

Arguments

expr	A valid R expression to be profiled.
type	The type of cache event to profile; options are "miss", "hit", "access", and "read".
events	The class of cache events to profile; options are "total", "data", "instruction", "all", "l1.all", "l2.all", "l3.all", "l1.ratio", "l2.ratio", and "l3.ratio".
gcFirst	logical; determines if garbage collection should be called before profiling.
burnin	logical; determines if the function should first be evaluated with an empty expression.

Details

This function measures the evaluation of the provided expression, expr, for different classes of cache events additionally restricted to misses, hits, accesses, or reads. The additional arguments, gcFirst and burnin, can be toggled to better simulate the target context.

Value

The results of the requested PAPI events are returned, in a named list, with values stored in double precision.

Examples

## Not run: 
library(pbdPAPI)

system.cache(1+1, type="miss", events="l2.all")

## End(Not run)

RBigData/pbdPAPI documentation built on May 8, 2019, 5:48 a.m.