Github user leventov commented on the issue: https://github.com/apache/logging-log4j2/pull/87 Things still TODO / TBD in this PR: - **Why on extreme loads the new version has significantly worse tail latency?** - StringBuilderEncoder.DEFAULT_BYTE_BUFFER_SIZE (8k) effectively overrides MemoryMappedFileManager.DEFAULT_REGION_LENGTH (32k), is that reasonable? - Java 9: - Buffer unmapping, as pointed here: https://github.com/apache/logging-log4j2/pull/87#issuecomment-312488652 - WriteTouch should have an opportunistic impl based on VarHandles. - Not doing stuff "in background" on 1-core machines; probably not doing write touch on "small" machines (< 4 cores?) - Cleanup and comments to the recently added write touch and background stuff
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