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base repository: nodejs/node-v0.x-archive
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  • 3 commits
  • 4 files changed
  • 2 contributors

Commits on Jan 13, 2015

  1. v8: don't busy loop in cpu profiler thread 

    Reduce the overhead of the CPU profiler by replacing sched_yield() with
nanosleep() in V8's tick event processor thread.  The former only yields
the CPU when there is another process scheduled on the same CPU.

Before this commit, the thread would effectively busy loop and consume
100% CPU time.  By forcing a one nanosecond sleep period rounded up to
the task scheduler's granularity (about 50 us on Linux), CPU usage for
the processor thread now hovers around 10-20% for a busy application.

PR-URL: #8789
Ref: strongloop/strong-agent#3
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
    @bnoordhuis @trevnorris
    bnoordhuis authored and trevnorris committed Jan 13, 2015
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  2. deps: revert backport b593aa8 from v8 upstream 

    This reverts commit 45f1330.

45f1330 was basically breaking
node-inspector. V8 landed a patch upstream that would probably fix these
issues (see https://codereview.chromium.org/813873007), but without the
ability to properly test it in the wild, it's safer to just revert the
breaking change.

Fixes #8948.

Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-by: Trevor Norris <trev.norris@gmail.com>
    Julien Gilli committed Jan 13, 2015
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  3. Merge remote-tracking branch 'upstream/v0.10' into v0.12 

    Conflicts:
	deps/v8/src/debug-debugger.js
	deps/v8/src/mirror-debugger.js
	deps/v8/src/platform-freebsd.cc
	deps/v8/src/platform-linux.cc
	deps/v8/src/platform-macos.cc
	deps/v8/src/platform-openbsd.cc
	deps/v8/src/platform-posix.cc
	deps/v8/src/platform-solaris.cc
	deps/v8/tools/gyp/v8.gyp
    Julien Gilli committed Jan 13, 2015
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