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| -rw-r--r-- | erts/doc/src/notes.xml | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml index 1099d76545..087ac01405 100644 --- a/erts/doc/src/notes.xml +++ b/erts/doc/src/notes.xml @@ -30,6 +30,44 @@ </header> <p>This document describes the changes made to the ERTS application.</p> +<section><title>Erts 5.9.3.3</title> + + <section><title>Known Bugs and Problems</title> + <list> + <item> + <p>Miscellaneous native code in OTP misbehave either due + to lengthy execution, or due to not bumping reductions + properly. Problems typically occur when passing huge sets + of data to a misbehaving BIF. Fixing this has high + priority and is being worked on, but there will remain + issues like this for some time.</p> + <p>In order to alleviate problems with scheduling which + might occur when executing misbehaving native code, the + command line argument <seealso + marker="erl#+sfwi">+sfwi</seealso> has been + introduced.</p> + <p>By default this feature is disabled and you are + advised not to enable it if you do not encounter problems + with misbehaving native code.</p> + <p>When enabled it has the following impact on the + characteristics of the system:</p> <list> <item>Work will + always be distributed between schedulers even when + executing misbehaving native code.</item> <item>It may + cause an increased amount of processes and/or ports + bouncing between schedulers which in turn will cause a + performance loss.</item> <item>It may cause reduced + performance due to reduced or lost work compaction when + all schedulers do not execute under full load.</item> + <item>An increased contention on run queue locks.</item> + </list> + <p> + Own Id: OTP-11164</p> + </item> + </list> + </section> + +</section> + <section><title>Erts 5.9.3.2</title> <section><title>Improvements and New Features</title> |