Closed Tomas-Kraus closed 2 years ago
Here is test fork with dependencies and code update to build the test with latest development snapshot: https://github.com/Tomas-Kraus/linuxjvmjaxwstest Tested on my Mac: openjdk version "17" 2021-09-14 OpenJDK Runtime Environment (build 17+35-2724) OpenJDK 64-Bit Server VM (build 17+35-2724, mixed mode, sharing)
# Run complete. Total time: 00:06:46
Benchmark Mode Cnt Score Error Units
MyBenchmark.testMethod thrpt 200 10009.949 ± 33.048 ops/s
...so let's try Linux now ...
I got some 23-25 ops/s. So the problem still exists in master branch.
Running Java VM with -Dsun.net.httpserver.nodelay=true seems to solve the issue on Linux:
# Run complete. Total time: 00:00:13
Benchmark Mode Cnt Score Error Units
MyBenchmark.testMethod thrpt 10 6152.077 ± 831.090 ops/s
Related topics:
release noted in #612
Previously tracked at: https://bugs.openjdk.java.net/browse/JDK-8193236 FULL PRODUCT VERSION : openjdk version "1.8.0_151" OpenJDK Runtime Environment (build 1.8.0_151-8u151-b12-1~deb9u1-b12) OpenJDK 64-Bit Server VM (build 25.151-b12, mixed mode)
ADDITIONAL OS VERSION INFORMATION : Linux c0ab5270bb70 4.9.49-moby #1 SMP Wed Sep 27 23:17:17 UTC 2017 x86_64 GNU/Linux
A DESCRIPTION OF THE PROBLEM : The built-in JAX WS server implementation works 100 times slower on linux machines then on Mac OS X or Windows. JMH test is published here: https://github.com/Andremoniy/linuxjvmjaxwstest
Basically it does the following: 1) starts a JAX WS with one SOAP method: endpoint = Endpoint.publish("http://localhost:8888/", new FooServiceImpl()); 2) performs client requests to this method: String result = state.client.foo(state.foo);
On Mac OS X with 2 Cores Intel Core i7 it gives:
JMH version: 1.19
VM version: JDK 1.8.0_151, VM 25.151-b12
VM invoker: /Library/Java/JavaVirtualMachines/jdk1.8.0_151.jdk/Contents/Home/jre/bin/java
... Result "test.openjdk.MyBenchmark.testMethod": 3077.813 ±(99.9%) 51.818 ops/s [Average] (min, avg, max) = (1718.347, 3077.813, 3315.271), stdev = 219.400 CI (99.9%): [3025.995, 3129.630] (assumes normal distribution)
Run complete. Total time: 00:06:49
Benchmark Mode Cnt Score Error Units MyBenchmark.testMethod thrpt 200 3077.813 ± 51.818 ops/s
The same machine, docker without CPU limitations:
JMH version: 1.19
VM version: JDK 1.8.0_151, VM 25.151-b12
VM invoker: /usr/java/jdk1.8.0_151/jre/bin/java
... Result "test.openjdk.MyBenchmark.testMethod": 19.882 ?(99.9%) 0.169 ops/s [Average] (min, avg, max) = (10.031, 19.882, 20.104), stdev = 0.715 CI (99.9%): [19.714, 20.051] (assumes normal distribution)
Run complete. Total time: 00:07:01
Benchmark Mode Cnt Score Error Units MyBenchmark.testMethod thrpt 200 19.882 ? 0.169 ops/s
The situation changes if JAX WS server is started with Jetty (there is no performance issues): ContextHandlerCollection contextHandlerCollection = new ContextHandlerCollection(); server.setHandler(contextHandlerCollection);
Please, refer also: https://stackoverflow.com/questions/47645817/jax-ws-server-implementation-performance-issue-for-linux-jvm
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM : On linux machine (for instance, docker pull openjdk:8u151)
git init git clone https://github.com/Andremoniy/openjdkjaxwstest mvn package cd target java -jar benchmark.jar
EXPECTED VERSUS ACTUAL BEHAVIOR : EXPECTED - The performance should be the about 3000-5000 ops/s. ACTUAL - The performance is about 20 ops/s.
REPRODUCIBILITY : This bug can be reproduced always.
---------- BEGIN SOURCE ---------- https://github.com/Andremoniy/linuxjvmjaxwstest ---------- END SOURCE ----------
CUSTOMER SUBMITTED WORKAROUND : Use Jetty server for publishing WS.
Source: https://github.com/javaee/metro-jax-ws/issues/1219 Author: LanceAndersen