From 94aaadacf7daa6edf94724b1dee9549a60cc6498 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn-Egil=20Dahlberg?= <egil@erlang.org>
Date: Thu, 7 May 2015 17:23:23 +0200
Subject: doc: Update efficiency guide with Maps memory info

---
 system/doc/efficiency_guide/advanced.xml | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'system/doc')

diff --git a/system/doc/efficiency_guide/advanced.xml b/system/doc/efficiency_guide/advanced.xml
index 3609b8d88e..26e0c57e81 100644
--- a/system/doc/efficiency_guide/advanced.xml
+++ b/system/doc/efficiency_guide/advanced.xml
@@ -86,6 +86,19 @@
         <cell>Tuple</cell>
         <cell>2 words + the size of each element.</cell>
       </row>
+      <row>
+        <cell>Small Map</cell>
+        <cell>4 words + 2 words per entry (key and value) + the size of each key and value pair.</cell>
+      </row>
+      <row>
+        <cell>Large Map</cell>
+        <cell>
+            At least, 2 words + 2 x <c>N</c> words + 2 x log16(<c>N</c>) words +
+            the size of each key and value pair, where <c>N</c> is the number of pairs in the Map.
+            A large Map is represented as a tree internally where each node in the tree is a
+            "sparse tuple" of arity 16.
+        </cell>
+      </row>
       <row>
         <cell>Pid</cell>
         <cell>1 word for a process identifier from the current local node
-- 
cgit v1.2.3


From a9161d2fc0390ba51201114e870093abb334afbe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn-Egil=20Dahlberg?= <egil@erlang.org>
Date: Mon, 23 May 2016 17:03:29 +0200
Subject: doc: Update process memory initial size

---
 system/doc/efficiency_guide/advanced.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'system/doc')

diff --git a/system/doc/efficiency_guide/advanced.xml b/system/doc/efficiency_guide/advanced.xml
index 26e0c57e81..d2a6605166 100644
--- a/system/doc/efficiency_guide/advanced.xml
+++ b/system/doc/efficiency_guide/advanced.xml
@@ -135,7 +135,7 @@
       </row>
       <row>
         <cell>Erlang process</cell>
-        <cell>327 words when spawned, including a heap of 233 words.</cell>
+        <cell>338 words when spawned, including a heap of 233 words.</cell>
       </row>
       <tcaption>Memory Size of Different Data Types</tcaption>
     </table>
-- 
cgit v1.2.3


From 70eea8ef8e597312567f19612e3e99a645503bd2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn-Egil=20Dahlberg?= <egil@erlang.org>
Date: Wed, 25 May 2016 17:00:36 +0200
Subject: doc: Update version of erts and otp release

---
 system/doc/efficiency_guide/advanced.xml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'system/doc')

diff --git a/system/doc/efficiency_guide/advanced.xml b/system/doc/efficiency_guide/advanced.xml
index d2a6605166..016302fe50 100644
--- a/system/doc/efficiency_guide/advanced.xml
+++ b/system/doc/efficiency_guide/advanced.xml
@@ -35,8 +35,7 @@
       how much memory different data types and operations require. It is
       implementation-dependent how much memory the Erlang data types and
       other items consume, but the following table shows some figures for
-      the <c>erts-5.2</c> system in R9B. There have been no significant
-      changes in R13.</p>
+      the <c>erts-8.0</c> system in OTP 19.0.</p>
 
       <p>The unit of measurement is memory words. There exists both a
       32-bit and a 64-bit implementation. A word is therefore 4 bytes or
-- 
cgit v1.2.3