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authorBjörn Gustavsson <[email protected]>2017-05-16 09:22:02 +0200
committerBjörn Gustavsson <[email protected]>2017-05-16 10:19:45 +0200
commit2ea5944504695496e2d8d0364ead14e871c71870 (patch)
treebdd35cb1acfcea3fac9838f00b3a8474be3a7047 /lib/tools/doc/src/lcnt_chapter.xml
parent6166106ff9ff9d62b5d5966dbdb03e189e2a2bdf (diff)
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Update instructions for how to start the lock-counting VM
Diffstat (limited to 'lib/tools/doc/src/lcnt_chapter.xml')
-rw-r--r--lib/tools/doc/src/lcnt_chapter.xml26
1 files changed, 8 insertions, 18 deletions
diff --git a/lib/tools/doc/src/lcnt_chapter.xml b/lib/tools/doc/src/lcnt_chapter.xml
index 6cfdb5cf1b..362f212963 100644
--- a/lib/tools/doc/src/lcnt_chapter.xml
+++ b/lib/tools/doc/src/lcnt_chapter.xml
@@ -48,29 +48,19 @@
</p>
<section>
<title> Enabling lock-counting </title>
- <p>For investigation of locks in the emulator we use an internal tool called <c>lcnt</c> (short for lock-count). The VM needs to be compiled with this option enabled. To enable this, use:</p>
+ <p>For investigation of locks in the emulator we use an internal tool called <c>lcnt</c> (short for lock-count). The VM needs to be compiled with this option enabled.
+ To compile a lock-counting VM along with a normal VM, use:</p>
<pre>
cd $ERL_TOP
-./configure --enable-lock-counter
- </pre>
-
- <p>
- Another way to enable this alongside a normal VM is to compile it at emulator directory level, much like a debug build. To compile it this way do the following,
- </p>
- <pre>
-cd $ERL_TOP/erts/emulator
-make lcnt FLAVOR=smp
- </pre>
- <p> and then starting Erlang with,</p>
+./configure --enable-lock-counter</pre>
+ <p>Start the lock-counting VM like this:</p>
<pre>
-$ERL_TOP/bin/cerl -lcnt
- </pre>
- <p>To verify that you lock-counting enabled check that <c>[lock-counting]</c> appears in the status text when the VM is started.</p>
+$ERL_TOP/bin/erl -emu_type lcnt</pre>
+ <p>To verify that lock counting is enabled check that <c>[lock-counting]</c> appears in the status text when the VM is started.</p>
<pre>
-Erlang R13B03 (erts-5.7.4) [source] [64-bit] [smp:8:8] [rq:8] [async-threads:0] [hipe]
- [kernel-poll:false] [lock-counting]
- </pre>
+Erlang/OTP 20 [erts-9.0] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:10] [hipe]
+ [kernel-poll:false] [lock-counting]</pre>
</section>
<section>
<title>Getting started</title>