From 988f5f5e8061ce2e135a314ca782788eda478a06 Mon Sep 17 00:00:00 2001
From: Lukas Larsson <lukas@erlang.org>
Date: Tue, 30 May 2017 16:35:18 +0200
Subject: erts: Move all I/O polling to a seperate thread

---
 erts/doc/src/erl.xml | 35 +++++++++++++++++++++++++++++------
 1 file changed, 29 insertions(+), 6 deletions(-)

(limited to 'erts/doc/src/erl.xml')

diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 71fe08d4e6..d24c35d217 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -762,13 +762,36 @@
           <seealso marker="erlang#process_flag_message_queue_data">
           <c>process_flag(message_queue_data, MQD)</c></seealso>.</p>
       </item>
-      <tag><c><![CDATA[+K true | false]]></c></tag>
+      <tag><marker id="+IOp"/><c>+IOp PollSets</c></tag>
       <item>
-        <p>Enables or disables the kernel poll functionality if supported by
-          the emulator. Defaults to <c><![CDATA[false]]></c> (disabled).
-          If the emulator does not support kernel poll, and flag
-          <c><![CDATA[+K]]></c> is passed to the emulator, a warning is
-          issued at startup.</p>
+        <p>Sets the number of IO pollsets to use when polling for I/O.
+          This option is only used on platforms that support concurrent
+          updates of a pollset, otherwise the same number of pollsets
+          are used as IO poll threads.
+          The default is 1.
+        </p>
+      </item>
+      <tag><marker id="+IOt"/><c>+IOt PollThreads</c></tag>
+      <item>
+        <p>Sets the number of IO poll threads to use when polling for I/O.
+          The maximum number of poll threads allowed is 1024. The default is 1.
+        </p>
+      </item>
+      <tag><marker id="+IOPp"/><c>+IOPp PollSetsPercentage</c></tag>
+      <item>
+        <p>Similar to <seealso marker="#+IOp"><c>+IOp</c></seealso> but uses
+          percentages to set the number of IO pollsets to create, based on the
+          number of poll threads configured. If both <c>+IOPp</c> and <c>+IOp</c>
+          are used, <c>+IOPp</c> is ignored.
+        </p>
+      </item>
+      <tag><marker id="+IOPt"/><c>+IOPt PollThreadsPercentage</c></tag>
+      <item>
+        <p>Similar to <seealso marker="#+IOt"><c>+IOt</c></seealso> but uses
+          percentages to set the number of IO poll threads to create, based on
+          the number of schedulers configures. If both <c>+IOPt</c> and
+          <c>+IOt</c> are used, <c>+IOPt</c> is ignored.
+        </p>
       </item>
       <tag><c><![CDATA[+l]]></c></tag>
       <item>
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