From 6543f15a3b6d9c1f71ff30ea682d64d1c8c7a7dc Mon Sep 17 00:00:00 2001
From: Lukas Larsson <lukas@erlang.org>
Date: Mon, 2 Oct 2017 11:43:57 +0200
Subject: erts: Update +IOt and msacc docs

---
 erts/doc/src/erl.xml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

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

diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index dc58cdeb13..6f6eca2a0b 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -776,6 +776,10 @@
         <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>
+        <p>A good way to check if more IO poll threads are needed is to use
+          <seealso marker="runtime_tools:msacc">microstate accounting</seealso>
+          and see what the load of the IO poll thread is. If it is high it could
+          be a good idea to add more threads.</p>
       </item>
       <tag><marker id="+IOPp"/><c>+IOPp PollSetsPercentage</c></tag>
       <item>
@@ -789,7 +793,7 @@
       <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
+          the number of schedulers configured. If both <c>+IOPt</c> and
           <c>+IOt</c> are used, <c>+IOPt</c> is ignored.
         </p>
       </item>
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