aboutsummaryrefslogtreecommitdiffstats
path: root/erts/doc
diff options
context:
space:
mode:
Diffstat (limited to 'erts/doc')
-rw-r--r--erts/doc/src/erlang.xml51
1 files changed, 29 insertions, 22 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index cd95a6a312..239cc63f71 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -4881,6 +4881,7 @@ true</pre>
<v>Type, Res -- see below</v>
</type>
<desc>
+ <p>All times are in milliseconds unless otherwise specified.</p>
<p>Returns information about the system as specified by
<c>Type</c>:</p>
<taglist>
@@ -4894,15 +4895,20 @@ true</pre>
<item>
<p>Returns
<c>{Total_Exact_Reductions, Exact_Reductions_Since_Last_Call}</c>.</p>
- <p><em>NOTE:</em><c>statistics(exact_reductions)</c> is
- a more expensive operation than
- <seealso marker="#statistics_reductions">statistics(reductions)</seealso>
- especially on an Erlang machine with SMP support.</p>
+ <note><p><c>statistics(exact_reductions)</c> is
+ a more expensive operation than
+ <seealso marker="#statistics_reductions">statistics(reductions)</seealso>
+ especially on an Erlang machine with SMP support.</p>
+ </note>
</item>
<tag><c>garbage_collection</c></tag>
<item>
<p>Returns <c>{Number_of_GCs, Words_Reclaimed, 0}</c>. This
information may not be valid for all implementations.</p>
+ <pre>
+> <input>statistics(garbage_collection).</input>
+{85,23961,0}
+</pre>
</item>
<tag><c>io</c></tag>
<item>
@@ -4914,12 +4920,18 @@ true</pre>
<tag><marker id="statistics_reductions"><c>reductions</c></marker></tag>
<item>
<p>Returns
- <c>{Total_Reductions, Reductions_Since_Last_Call}</c>.</p>
- <p><em>NOTE:</em> From erts version 5.5 (OTP release R11B)
- this value does not include reductions performed in current
- time slices of currently scheduled processes. If an
- exact value is wanted, use
- <seealso marker="#statistics_exact_reductions">statistics(exact_reductions)</seealso>.</p>
+ <c>{Total_Reductions, Reductions_Since_Last_Call}</c>.</p>
+ <note>
+ <p>From erts version 5.5 (OTP release R11B)
+ this value does not include reductions performed in current
+ time slices of currently scheduled processes. If an
+ exact value is wanted, use
+ <seealso marker="#statistics_exact_reductions">statistics(exact_reductions)</seealso>.</p>
+ </note>
+ <pre>
+> <input>statistics(reductions).</input>
+{2046,11}
+</pre>
</item>
<tag><c>run_queue</c></tag>
<item>
@@ -4932,6 +4944,10 @@ true</pre>
Note that the run-time is the sum of the run-time for all
threads in the Erlang run-time system and may therefore be greater
than the wall-clock time.</p>
+ <pre>
+> <input>statistics(runtime).</input>
+{1690,1620}
+</pre>
</item>
<tag><marker id="statistics_scheduler_wall_time"><c>scheduler_wall_time</c></marker></tag>
<item>
@@ -4989,6 +5005,9 @@ ok
0.9769136803764825
</pre>
+ <note>
+ <p><c>scheduler_wall_time</c> is by default disabled. Use <c>erlang:system_flag(scheduler_wall_time, true)</c> to enable it. </p>
+ </note>
</item>
<tag><c>wall_clock</c></tag>
@@ -5000,18 +5019,6 @@ ok
opposed to runtime or CPU time.</p>
</item>
</taglist>
- <p>All times are in milliseconds.</p>
- <pre>
-> <input>statistics(runtime).</input>
-{1690,1620}
-> <input>statistics(reductions).</input>
-{2046,11}
-> <input>statistics(garbage_collection).</input>
-{85,23961,0}</pre>
- <note>
- <p><c>scheduler_wall_time</c> is by default disabled. Use <c>erlang:system_flag(scheduler_wall_time, true)</c> to enable it. </p>
- </note>
-
</desc>
</func>
<func>