4a8d3a274c
Motivation: The usage of Invocation level for JMH fixture methods (setup/teardown) inccurs in a significant overhead in the benchmark time (see org.openjdk.jmh.annotations.Level documentation). In the case of CodecInputListBenchmark, benchmarks are far too small (less than 50ns) and the Invocation level setup offsets the measurement considerably. On such cases, the recommended fix patch is to include the setup/teardown code in the benchmark method. Modifications: Include the setup/teardown code in the relevant benchmark methods. Remove the setup/teardown methods from the benchmark class. Result: We run the entire benchmark 10 times with default parameters we observed: - ArrayList benchmark affected directly by JMH overhead is now from 15-80% faster. - CodecList benchmark is now 50% faster than original (even with the setup code being measured). - Recyclable ArrayList is ~30% slower. - All benchmarks have significant different means (ANOVA) and medians (Moore) Mode: Throughput (Higher the better) Method Full params Factor Modified (Median) Original (Median) recyclableArrayList (elements = 1) 0.615520967 21719082.75 35285691.2 recyclableArrayList (elements = 4) 0.699553431 17149442.76 24514843.31 arrayList (elements = 4) 1.152666631 27120407.18 23528404.88 codecOutList (elements = 1) 1.527275908 67251089.04 44033359.47 codecOutList (elements = 4) 1.596917095 59174088.78 37055204.03 arrayList (elements = 1) 1.878616889 62188238.24 33103204.06 Environment: Tests run on a Computational server with CPU: E5-1660-3.3GHZ (6 cores + HT), 64 GB RAM.
Netty Project
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.
Links
How to build
For the detailed information about building and developing Netty, please visit the developer guide. This page only gives very basic information.
You require the following to build Netty:
- Latest stable Oracle JDK 7
- Latest stable Apache Maven
- If you are on Linux, you need additional development packages installed on your system, because you'll build the native transport.
Note that this is build-time requirement. JDK 5 (for 3.x) or 6 (for 4.0+) is enough to run your Netty-based application.
Branches to look
Development of all versions takes place in each branch whose name is identical to <majorVersion>.<minorVersion>. For example, the development of 3.9 and 4.0 resides in the branch '3.9' and the branch '4.0' respectively.
Usage with JDK 9
Netty can be used in modular JDK9 applications as a collection of automatic modules. The module names follow the reverse-DNS style, and are derived from subproject names rather than root packages due to historical reasons. They are listed below:
io.netty.allio.netty.bufferio.netty.codecio.netty.codec.dnsio.netty.codec.haproxyio.netty.codec.httpio.netty.codec.http2io.netty.codec.memcacheio.netty.codec.mqttio.netty.codec.redisio.netty.codec.smtpio.netty.codec.socksio.netty.codec.stompio.netty.codec.xmlio.netty.commonio.netty.handlerio.netty.handler.proxyio.netty.resolverio.netty.resolver.dnsio.netty.transportio.netty.transport.epoll(nativeomitted - reserved keyword in Java)io.netty.transport.kqueue(nativeomitted - reserved keyword in Java)io.netty.transport.unix.common(nativeomitted - reserved keyword in Java)io.netty.transport.rxtxio.netty.transport.sctpio.netty.transport.udt
Automatic modules do not provide any means to declare dependencies, so you need to list each used module separately
in your module-info file.