f18990a8a5
Motivation: Currently we hold a lock on the PoolArena when we allocate / free PoolSubpages, which is wasteful as this also affects "normal" allocations. The same is true vice-verse. Modifications: Ensure we synchronize on the head of the PoolSubPages pool. This is done per size and so it is possible to concurrently allocate / deallocate PoolSubPages with different sizes, and also normal allocations. Result: Less condition and so faster allocation/deallocation. Before this commit: xxx:~/wrk $ ./wrk -H 'Connection: keep-alive' -d 120 -c 256 -t 16 -s scripts/pipeline-many.lua http://xxx:8080/plaintext Running 2m test @ http://xxx:8080/plaintext 16 threads and 256 connections Thread Stats Avg Stdev Max +/- Stdev Latency 17.61ms 29.52ms 689.73ms 97.27% Req/Sec 278.93k 41.97k 351.04k 84.83% 530527460 requests in 2.00m, 71.64GB read Requests/sec: 4422226.13 Transfer/sec: 611.52MB After this commit: xxx:~/wrk $ ./wrk -H 'Connection: keep-alive' -d 120 -c 256 -t 16 -s scripts/pipeline-many.lua http://xxx:8080/plaintext Running 2m test @ http://xxx:8080/plaintext 16 threads and 256 connections Thread Stats Avg Stdev Max +/- Stdev Latency 15.85ms 24.50ms 681.61ms 97.42% Req/Sec 287.14k 38.39k 360.33k 85.88% 547902773 requests in 2.00m, 73.99GB read Requests/sec: 4567066.11 Transfer/sec: 631.55MB This is reproducable every time.
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
The 'master' branch is where the development of the latest major version lives on. The development of all other major versions takes place in each branch whose name is identical to its major version number. For example, the development of 3.x and 4.x resides in the branch '3' and the branch '4' respectively.