jmh Questions
3
Solved
I wanted to try out the new feature of JMH by running it as Java Application in eclipse. I imported and built jmh-samples project. Compiled classes ended in /jmh-samples/target/generated-sources/an...
Lagos asked 28/1, 2014 at 5:25
2
Solved
I assumed that separating objects that implement different interfaces into several lists and iterating those lists afterwards would be faster than dumping all objects into a single list and then sw...
Gastrulation asked 26/6, 2019 at 14:24
3
I'm working on a maven project. I'm trying to integrate jmh benchmarking into my project. The pom.xml of my maven project...
<parent>
<groupId>platform</groupId>
<artifactId...
Veedis asked 26/4, 2017 at 6:42
1
Solved
I wanted to do some performance measurements and comparisons of simple for loops and equivalent streams implementations. I believe it's the case that streams will be somewhat slower than equivalent...
Polonium asked 26/3, 2019 at 3:58
1
Solved
According to JEP 230: Microbenchmark Suite, there exists a microbenchmark suite built-in to Java 12. The JEP explains that it's basically JMH, but without needing to explicitly depend on it using M...
Gagne asked 19/3, 2019 at 14:24
1
Solved
This code is benchmarking 3 different ways to compute the sum of the reciprocals of the elements of a double[].
a for-loop
Java 8 streams
the colt math library
What is the reason that the compu...
Sathrum asked 12/1, 2019 at 21:13
2
Solved
I was comparing the performance of JDK 8 and 11 using jmh 1.21 when I ran across some surprising numbers:
Java version: 1.8.0_192, vendor: Oracle Corporation
Benchmark Mode Cnt Score Error Units
...
Sall asked 2/1, 2019 at 15:15
1
Solved
I was comparing the performance of JDK 8 and 11 using jmh 1.21 when I ran across some surprising numbers:
Java version: 1.8.0_192, vendor: Oracle Corporation
Benchmark Mode Cnt Score Error Units
...
1
Solved
I took a project that uses maven-surefire-plugin (automated tests) to trigger JMH benchmarks and added module-info.java to it. Now, META-INF/BenchmarkList is no longer getting generated (in fact, t...
Piracy asked 26/12, 2018 at 5:41
2
This code was working fine. On restarting the computer, it gives me the error:
ERROR: org.openjdk.jmh.runner.RunnerException:
ERROR: Exception while trying to acquire the JMH lock (C:\WINDOWS\/jm...
4
I'm using JMH and I find something hard to understand: I have one method annotated with @Benchmark and I set measurementIterations(3). The method is called 3 times, but within each iteration call, ...
Velasquez asked 4/4, 2016 at 11:7
2
Solved
I have a spring boot application which I want to benchmark using JMH. Any reference for this integration will be useful.
Lieutenant asked 3/1, 2017 at 7:33
2
Solved
I'm comparing performance of MethodHandle::invoke and direct static method invokation. Here is the static method:
public class IntSum {
public static int sum(int a, int b){
return a + b;
}
}
...
Armpit asked 15/3, 2018 at 5:33
1
Solved
I'm trying to measure the memory consumed when running the benchmark. I found out on the internet that I can use GC profiler to measure that. I tried but I don't understand the answer as well as se...
Tempestuous asked 28/2, 2018 at 19:26
2
Solved
I'm using JMH to benchmark DOM parser. I got really weird results as the first iteration actually run faster than later iterations
Can anyone explain why this happens? Also, what do percentil...
Soursop asked 22/2, 2018 at 20:56
1
Solved
Benchmarks are run under intel core i5, Ubuntu
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
I'm...
1
Solved
I'm learning JMH benchmarking using this tutorial.
I noticed that there are 2 warmup related stuff for function benchMurmur3_128 in here.
so, I have question regarding the difference between warm...
Kirkpatrick asked 12/12, 2017 at 15:41
1
Solved
1
Solved
Having a Kotlin project with Gradle setup:
apply plugin: 'kotlin'
apply plugin: 'kotlin-kapt'
dependencies {
kapt 'org.openjdk.jmh:jmh-generator-annprocess:1.18'
...
}
Putting benchmarks unde...
1
Solved
I'm using the Java Measurement Harness (JMH) to benchmark some routines. I'm interested in getting the maximum heap size of each run. The JMH's GC Profiler gives me information like allocation rate...
Condenser asked 11/8, 2017 at 19:47
2
Note: This is not about a performance issue. I only observe a difference in performance I cannot explain / understand.
While benchmarking some newly developed code, targeted for Java 9 I discov...
Highpressure asked 28/10, 2017 at 10:23
1
Solved
I am developing an integrated Benchmarking into an application. I want to use JMH as my framework.
How can I receive the results as an JSON object?
I know I can save it in a file with the followi...
Gentle asked 6/2, 2017 at 15:47
4
Solved
I've had this question for quite a while now, trying to read lots of resources and understanding what is going on - but I've still failed to get a good understanding of why things are the way they ...
Antigone asked 7/9, 2017 at 9:25
2
Solved
If I run these benchmarks in Rust:
#[bench]
fn bench_rnd(b: &mut Bencher) {
let mut rng = rand::weak_rng();
b.iter(|| rng.gen_range::<f64>(2.0, 100.0));
}
#[bench]
fn bench_ln(b: &...
Mosque asked 11/7, 2017 at 14:33
1
Solved
I want to profile JMH tests and look at a call tree like in the VisualVM. But when I use the StackProfiler, it gives me native methods like that, which totally useless in my case.
....[Thread stat...
Sweetheart asked 2/6, 2017 at 16:42
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