Pavan Kumar 6bd8c5d4d0 Improve the allocation algorithm in PoolChunk ... Motivation: Depth-first search is not always efficient for buddy allocation. Modification: Employ a new faster search algorithm with different memoryMap layout. Result: With thread-local cache disabled, we see a lot of performance improvment, especially when the size of the allocation is as small as the page size, which had the largest search space previously: -- master head -- Benchmark (size) Mode Score Error Units pooledDirectAllocAndFree 8192 thrpt 215.392 1.565 ops/ms pooledDirectAllocAndFree 16384 thrpt 594.625 2.154 ops/ms pooledDirectAllocAndFree 65536 thrpt 1221.520 18.965 ops/ms pooledHeapAllocAndFree 8192 thrpt 217.175 1.653 ops/ms pooledHeapAllocAndFree 16384 thrpt 587.250 14.827 ops/ms pooledHeapAllocAndFree 65536 thrpt 1217.023 44.963 ops/ms -- changes -- Benchmark (size) Mode Score Error Units pooledDirectAllocAndFree 8192 thrpt 3656.744 94.093 ops/ms pooledDirectAllocAndFree 16384 thrpt 4087.152 22.921 ops/ms pooledDirectAllocAndFree 65536 thrpt 4058.814 29.276 ops/ms pooledHeapAllocAndFree 8192 thrpt 3640.355 44.418 ops/ms pooledHeapAllocAndFree 16384 thrpt 4030.206 24.365 ops/ms pooledHeapAllocAndFree 65536 thrpt 4103.991 70.991 ops/ms		2014-06-21 13:20:25 +09:00
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main/java/io/netty/buffer	Improve the allocation algorithm in PoolChunk	2014-06-21 13:20:25 +09:00
test/java/io/netty/buffer	Remove System.out.println(...) debug messages	2014-06-20 19:42:38 +02:00