microbenchmark Questions
2
Solved
When I run the google benchmark I get a WARNING saying that cpu scaling is enabled. Is that a feature that I can toggle at build via flags or at runtime via arguments or is it a system setting?
Chavarria asked 15/7, 2016 at 11:31
2
From Efficient R programming the byte compiler and R docment r byte compiler, I learnt that cmpfun can be used to compile a pure R function into byte code to speed and enableJIT can speed up by ena...
Scurrile asked 1/3, 2019 at 11:20
1
I want to insert some time measurement into my code. On x64 I use __rdtscp. Is there something similar for the mac m1/m2? Specifically something that isn't a system call and high resolution.
Triecious asked 10/12, 2022 at 22:53
2
Solved
I did a test with few iterations to test efficiency of Document.querySelector and Element.querySelector.
Markup:
<form>
<input type="text" />
</form>
Script:
Querying with D...
Landlady asked 7/9, 2015 at 4:3
3
Solved
I did an experiment out of curiosity. I wanted to see if there was a micro difference at all between strtolower() and strtoupper(). I expected strtolower() would be faster on mostly lowercase strin...
Diagnostics asked 27/6, 2017 at 13:51
1
Solved
I'm attempting to benchmark the memory bandwidth on a ccNUMA system with 2x Intel(R) Xeon(R) Platinum 8168:
24 cores @ 2.70 GHz,
L1 cache 32 kB, L2 cache 1 MB and L3 cache 33 MB.
As a reference, ...
Seeder asked 10/5, 2022 at 7:55
2
I try to benchmark some of the methods of my Spring (with maven) project. I need to use @Autowired and @Inject on several fields in my project. While I run my project, it works well. But JMH always...
Decide asked 4/5, 2017 at 9:14
5
I am trying to build google-benchmark and use it with my library using cmake. I have managed to build google-benchmark and run all its tests successfully using cmake. I am unfortunately unable to l...
Decline asked 27/3, 2019 at 11:28
4
Solved
I want to start have a look at JMH and I'm failing to run benchmarks due some reasons. Let me explain what I tried:
Setup a maven project in Eclipse
Define pom.xml like:
Downloaded some official...
Ginter asked 27/5, 2014 at 14:2
1
Solved
I want to understand why these two equal benchmarks have different results on these two different platforms.
Classcat, clsx, obj-str, vanilla JS on perf.link
Classcat, clsx, obj-str, vanilla JS o...
Vertex asked 26/3, 2021 at 16:51
1
I am a bit confused about the implementation of the function void DoNotOptimize of the Google Benchmark Framework (definition from here):
template <class Tp>
inline BENCHMARK_ALWAYS_INLINE vo...
Feretory asked 25/3, 2021 at 8:4
1
Solved
Note, I tried testing this before in this question which may look similar, however those results were flawed and a result of constant folding, which I subsequently disabled. and republished in this...
Zaidazailer asked 4/2, 2021 at 2:32
1
Solved
Given these two evals which only change Module::FOO() and FOO().
# Symbols imported, and used locally.
eval qq[
package Foo$num;
Module->import();
my \$result = Module::FOO() * Module::FOO()...
Botswana asked 28/1, 2021 at 4:35
2
Solved
I have a code that goes something like:
...
void benchMark(benchmark::State& state){
maxCapacity = state.range(0);
// set up some stuff
for (auto _ : state){
// time this code
}
}
BENCHM...
Mastersinger asked 17/3, 2020 at 6:8
1
Solved
I have an extremely simple program to measure how much time a function is taking.
#include <iostream>
#include <vector>
#include <chrono>
struct Foo
{
void addSample(uint64_t s)
...
Speight asked 8/9, 2020 at 17:46
2
Solved
From this question, we benchmark these two variants,
substr( $foo, 0, 0 ) = "Hello ";
substr( $foo, 0, 0, "Hello " );
In it we discover that substr-lvalue is faster. To which Ikegami said,
Ho...
Fingerbreadth asked 8/5, 2020 at 1:25
2
Solved
I want to filter a large data.table by group. I can use .SD or .I and while I personally think the former is much easier to read, the latter is tremendously faster / uses much less memory (despite ...
Nitza asked 24/4, 2020 at 15:55
1
Solved
I was messing around with optimizing a function using Google Benchmark, and ran into a situation where my code was unexpectedly slowing down in certain situations. I started experimenting with it, ...
Durgy asked 14/3, 2020 at 23:35
1
Solved
Background:
This is the "microbenchmark" package for R:
https://cran.r-project.org/web/packages/microbenchmark/index.html
The first line in the reference manual says that it is built for "Accurate...
Kendy asked 22/2, 2018 at 0:22
1
Solved
I am evaluating a network+rendering workload for my project.
The program continuously runs a main loop:
while (true) {
doSomething()
drawSomething()
doSomething2()
sendSomething()
}
The mai...
Differ asked 19/2, 2020 at 2:6
1
Solved
As far as I know, the main difference in runtime ordering in a processor with respect to rdtsc and rdtscp instruction is that whether the execution waits until all previous instructions are execute...
Slipsheet asked 15/1, 2020 at 21:10
2
Solved
I'd like to evaluate the time to extract data from a raster time series using different file types (geotiff, binary) or objects (RasterBrick, RasterStack). I created a function that will extract th...
Caribbean asked 10/1, 2020 at 18:2
2
Does gcc/g++ have flags to enable or disable arithmetic optimisations, e.g. where a+a+...+a is replaced by n*a when a is an integer? In particular, can this be disabled when using -O2 or -O3?
In t...
Amalgam asked 8/12, 2019 at 20:32
1
Solved
I am using benchmark library to benchmark some codes. I want to call a setup method before calling the actual benchmark code one time and not to be repeated everytime, for multiple benchmark method...
Paratyphoid asked 11/10, 2019 at 13:58
2
Solved
All is in the title. I would expect that order uses sort to find the order of the values in a vector. Thus sort should be quicker than order to sort a vector, but this is not the case:
library(micr...
Vivienviviene asked 20/6, 2018 at 17:58
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