b2eaab092b
Motivation: While looking at hpack header-processing hotspots I noticed some low level too-big-to-inline methods which can be shrunk. Modifications: Reduce bytecode size and/or runtime operations used for the following methods: PlatformDependent0.equals(byte[], ...) PlatformDependent0.equalsConstantTime(byte[], ...) PlatformDependent0.hashCodeAscii(byte[],int,int) PlatformDependent.hashCodeAscii(CharSequence) Result: Existing benchmarks show decent improvement Before Benchmark (size) Mode Cnt Score Error Units HpackUtilBenchmark.newEquals SMALL thrpt 5 17200229.374 ± 1701239.198 ops/s HpackUtilBenchmark.newEquals MEDIUM thrpt 5 3386061.629 ± 72264.685 ops/s HpackUtilBenchmark.newEquals LARGE thrpt 5 507579.209 ± 65883.951 ops/s After Benchmark (size) Mode Cnt Score Error Units HpackUtilBenchmark.newEquals SMALL thrpt 5 29221527.058 ± 4805825.836 ops/s HpackUtilBenchmark.newEquals MEDIUM thrpt 5 6556251.645 ± 466115.199 ops/s HpackUtilBenchmark.newEquals LARGE thrpt 5 879828.889 ± 148136.641 ops/s Before Benchmark (size) Mode Cnt Score Error Units PlatformDepBench.unsafeBytesEqual 4 avgt 10 4.263 ± 0.110 ns/op PlatformDepBench.unsafeBytesEqual 10 avgt 10 5.206 ± 0.133 ns/op PlatformDepBench.unsafeBytesEqual 50 avgt 10 8.160 ± 0.320 ns/op PlatformDepBench.unsafeBytesEqual 100 avgt 10 13.810 ± 0.751 ns/op PlatformDepBench.unsafeBytesEqual 1000 avgt 10 89.077 ± 7.275 ns/op PlatformDepBench.unsafeBytesEqual 10000 avgt 10 773.940 ± 24.579 ns/op PlatformDepBench.unsafeBytesEqual 100000 avgt 10 7546.807 ± 110.395 ns/op After Benchmark (size) Mode Cnt Score Error Units PlatformDepBench.unsafeBytesEqual 4 avgt 10 3.337 ± 0.087 ns/op PlatformDepBench.unsafeBytesEqual 10 avgt 10 4.286 ± 0.194 ns/op PlatformDepBench.unsafeBytesEqual 50 avgt 10 7.817 ± 0.123 ns/op PlatformDepBench.unsafeBytesEqual 100 avgt 10 11.260 ± 0.412 ns/op PlatformDepBench.unsafeBytesEqual 1000 avgt 10 84.255 ± 2.596 ns/op PlatformDepBench.unsafeBytesEqual 10000 avgt 10 591.892 ± 5.136 ns/op PlatformDepBench.unsafeBytesEqual 100000 avgt 10 6978.859 ± 285.043 ns/op
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.