Francesco Nigro created ARTEMIS-1151:
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Summary: Adapting TimedBuffer and NIO Buffer Pooling
Key: ARTEMIS-1151
URL: https://issues.apache.org/jira/browse/ARTEMIS-1151
Project: ActiveMQ Artemis
Issue Type: Improvement
Components: Broker
Reporter: Francesco Nigro
Assignee: Francesco Nigro
Priority: Minor
This is the list of improvements:
- NIO/ASYNCIO new TimedBuffer with adapting batch window heuristic
- NIO/ASYNCIO improved TimedBuffer write monitoring with lightweight concurrent
performance counters
- NIO/ASYNCIO journal/paging operations benefit from less buffer copy
- NIO/ASYNCIO any buffer copy is always performed with raw batch copy using
SIMD instrinsics (System::arrayCopy) or memcpy under the hood
- NIO improved clear buffers using SIMD instrinsics (Arrays::fill) and/or memset
- NIO journal operation perform by default TLABs allocation pooling (off heap)
retaining only the last max sized buffer
- NIO improved file copy operations using zero-copy FileChannel::transfertTo
- NIO improved zeroing using pooled single OS page buffer to clean the file +
pwrite (on Linux)
- NIO deterministic release of unpooled direct buffers to avoid OOM errors due
to slow GC
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