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| author | John Högberg <[email protected]> | 2017-06-29 19:32:41 +0200 |
|---|---|---|
| committer | John Högberg <[email protected]> | 2017-07-06 12:29:43 +0200 |
| commit | 876ecc058d0d7dd48f8c5f7ddaf189d278e69925 (patch) | |
| tree | 4f1e68e6b02db037a361acaeed430381a72653c5 /lib/tools/doc/src/lcnt_chapter.xml | |
| parent | fcd8e103006767622cf2ab61a4c85683d863db74 (diff) | |
| download | otp-876ecc058d0d7dd48f8c5f7ddaf189d278e69925.tar.gz otp-876ecc058d0d7dd48f8c5f7ddaf189d278e69925.tar.bz2 otp-876ecc058d0d7dd48f8c5f7ddaf189d278e69925.zip | |
Document rt_mask and add warnings about copy_save
Diffstat (limited to 'lib/tools/doc/src/lcnt_chapter.xml')
| -rw-r--r-- | lib/tools/doc/src/lcnt_chapter.xml | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/lib/tools/doc/src/lcnt_chapter.xml b/lib/tools/doc/src/lcnt_chapter.xml index 1981d66117..24b58136aa 100644 --- a/lib/tools/doc/src/lcnt_chapter.xml +++ b/lib/tools/doc/src/lcnt_chapter.xml @@ -4,7 +4,7 @@ <chapter> <header> <copyright> - <year>2009</year><year>2016</year> + <year>2009</year><year>2017</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -29,7 +29,7 @@ <approved>nobody</approved> <checked>no</checked> <date>2009-11-26</date> - <rev>PA1</rev> + <rev>PA2</rev> <file>lcnt_chapter.xml</file> </header> <p> @@ -97,8 +97,11 @@ ok ok </pre> <p> - Another way to to profile a specific function is to use <c>lcnt:apply/3</c> or <c>lcnt:apply/1</c> which does <c>lcnt:clear/0</c> before the function and <c>lcnt:collect/0</c> after its invocation. - It also sets <c>copy_save</c> to <c>true</c> for the duration of the function call + Another way to to profile a specific function is to use <c>lcnt:apply/3</c> or <c>lcnt:apply/1</c> + which does <c>lcnt:clear/0</c> before the function and <c>lcnt:collect/0</c> after its invocation. + This method should only be used in micro-benchmarks since it sets <c>copy_save</c> to <c>true</c> + for the duration of the function call, which may cause the emulator to run out of memory if + attempted under load. </p> <pre> Erlang R13B03 (erts-5.7.4) [source] [smp:8:8] [rq:8] [async-threads:0] [hipe] |