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authorSiri Hansen <[email protected]>2013-07-11 11:27:29 +0200
committerDan Gudmundsson <[email protected]>2014-01-27 15:52:52 +0100
commite2d565532d25024c1c0552d8eaaddf90eed88629 (patch)
treeca6f09ddf4bde35b10868746f4ee2a33e3edea7e /lib/observer/doc/src/crashdump_help.html
parent7d4e5e2458e0627882f49078b9757dd6ae21a6fe (diff)
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observer: add wx version of crashdump_viewer
The old web base crashdump_viewer is now removed.
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-</<!doctype chapter PUBLIC "-//Stork//DTD chapter//EN">
-<!--
- ``The contents of this file are subject to the Erlang Public License,
- Version 1.1, (the "License"); you may not use this file except in
- compliance with the License. You should have received a copy of the
- Erlang Public License along with this software. If not, it can be
- retrieved via the world wide web at http://www.erlang.org/.
-
- Software distributed under the License is distributed on an "AS IS"
- basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
- the License for the specific language governing rights and limitations
- under the License.
-
- The Initial Developer of the Original Code is Ericsson Utvecklings AB.
- Portions created by Ericsson are Copyright 1999, Ericsson Utvecklings
- AB. All Rights Reserved.''
-
- $Id$
--->
-<html>
-<head>
-<title>Crashdump Viewer help</title>
-</head>
-<body BGCOLOR="#FFFFFF">
-<center>
-<a HREF="http://www.erlang.se"><img BORDER=0 ALT="[Erlang Systems]"
-SRC="min_head.gif"></a>
-</center>
-<blockquote>
- <h2>Information pages</h2>
-
- <p>Each menu item points to an information page. If no information
- is found for an item, the page will simply say "No information
- found". The reason for not finding any information about an item
- can be that the dump is truncated, that it is a dump from an old
- OTP release in which this item was not written or that the item
- simply wasn't present in the system at the point of failure.
-
- <p>If the dump was truncated, a warning is displayed.
-
- <p>Even if some information about an item exists, there might be
- empty fields if the dump originates from an old OTP release.
-
- <p>The value "-1" in any field means "unknown", and in most cases
- it means that the dump was truncated somewhere around this field.
-
- <p>Only some of the fields in the different information pages are
- described here. These are fields that to not exist in the raw
- crashdump, or in some way differs from the fields in the raw
- crashdump. Details about other field can be found in the user's
- guide for the Erlang runtime system, in the chapter "How to
- interpret the Erlang crash dumps". A link to this chapter can be
- found in the Crashdump Viewer's menu under documentation, and
- there are also direct links from the specific sections below to
- related information in "How to interpret the Erlang crash dumps".
-
- <a NAME="general_info">
- <h3>General information</h3>
-
- <p>This is the first page shown when a new dump is loaded into
- the system. It shows a very short overview of the dump.
-
- <p>'Node name' will only exist in dumps originating from OTP R9C
- and later.
-
- <p>The following fields are not described in the Erlang runtime
- system user's guide:
-
- <dl>
- <dt><strong>Crashdump created on</strong></dt>
- <dd>Time of failure.</dd>
-
- <dt><strong>Memory allocated</strong></dt>
- <dd>The total number of bytes allocated, equivalent to
- <code>c:memory(total)</code>. This will only be present in
- dumps from OTP R9C and later.</dd>
-
- <dt><strong>Memory maximum</strong></dt>
- <dd>The maximum number of bytes that has been allocated
- during the lifetime of the originating node. This will not be
- present in dumps older than OTP R9C, and even in newer
- releases it is only shown if the Erlang runtime system was run
- instrumented.</dd>
-
- <dt><strong>Atoms</strong></dt>
- <dd>If at all available in the dump, this is the total
- number of atoms in the atom table. If the size of the atom
- table is not available, the number of atoms visible in the
- dump is presented.</dd>
-
- <dt><strong>Processes, ETS tables and Funs</strong></dt>
- <dd>The number of processes, ETS tables and funs visible in
- the dump.</dd>
- </dl>
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#general_info>
- More...</a>
- </center>
-
-
- <a NAME="processes">
- <h3>Processes</h3>
-
- <p>The Process Information page shows a list of all processes
- found in the crashdump, including some short information about
- each process. By default the processes are sorted by their
- pids. To sort by other topic, click any heading in the process
- table.
-
- <p>Detailed information about a specific process is shown when
- the pid is clicked.
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#processes>
- More...</a>
- </center>
-
-
-
- <a NAME="ports">
- <h3>Ports</h3>
-
- <p>The port information page shows all port information found in
- the dump.
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#ports>
- More...</a>
- </center>
-
-
-
- <a NAME="ets_tables"><a NAME="internal_ets_tables">
- <h3>ETS tables</h3>
-
- <p>The ETS table information page shows all ETS table
- information found in the dump. The 'Id' is the same as the
- 'Table' field found in the raw crashdump, and 'Memory' is the
- 'Words' field from the raw crashdump translated into
- bytes. 'Type' is the type of table, and it can be either "hash"
- or "tree". For tree tables there will be no value in the
- 'Bucket' field.
-
- <p>Clicking a pid in the 'Owner' column takes you to the
- detailed information about the process owning the ETS table.
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#ets_tables>
- More...</a>
- </center>
-
-
- <a NAME="timers">
- <h3>Timers</h3>
-
- <p>The timer information page shows all timer information found
- in the dump.
-
- <p>Clicking a pid in the 'Owner' column takes you to the
- detailed information about the process owning the timer.
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#timers>
- More...</a>
- </center>
-
-
-
- <a NAME="funs">
- <h3>Fun table</h3>
-
- <p>The Fun table information page shows all Fun information
- found in the dump. Fun information will only exist in dumps from
- OTP R8B or later.
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#funs>
- More...</a>
- </center>
-
-
-
- <a NAME="atoms">
- <h3>Atoms</h3>
-
- <p>The atoms information page lists all atoms found in the
- dump. The last created atom is listed first.
-
- <p>Note that if the dump is from OTP R8B or earlier, the raw
- dump lists the atoms in the opposite order and the Crashdump
- Viewer reverses them. This means that there is no problem if the
- dump is not truncated. However, if the dump is truncated, the
- last atoms might not be shown at all!!
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#atoms>
- More...</a>
- </center>
-
-
- <a NAME="distribution_info">
- <h3>Distribution information</h3>
-
- <p>The distribution information page shows all distribution
- information found in the dump.
-
- <p>If the page shows "Not alive", it means that the node was not
- distributed.
-
- <p>It the node was distributed, all connected nodes are
- shown. Visible nodes are alive nodes with a living connection to
- the originating node. Hidden nodes are the same as visible
- nodes, except they are started with the "-hidden" flag. Not
- connected nodes are nodes that are not connected to the
- originating node anymore, but references (i.e. process or port
- identitifiers) exist.
-
- <p>'Links/Monitors' may contain information about links or
- monitors between processes on the originating node and the
- connected node.
-
- <p>'Extra Info' may contain debug information (i.e. special
- information written if the emulator is debug compiled) or error
- information.
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#distribution_info>
- More...</a>
- </center>
-
-
- <a NAME="loaded_modules">
- <h3>Loaded modules</h3>
-
- <p>The loaded modules information page shows all modules that
- were loaded on the originating node, and the current size of the
- code. If old code exsits, the old size is also shown.
-
- <p>Detailed information about a specific module is shown when
- the module name is clicked.
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#loaded_modules>
- More...</a>
- </center>
-
-
- <a NAME="internal_tables">
- <h3>Internal tables</h3>
-
- <p>Internal tables are shown in two information pages: hash
- tables and index tables.
-
- <center>
- <a href=/crashdump_erts_doc/crash_dump.html#internal_tables>
- More...</a>
- </center>
-
-
- <a NAME="memory">
- <h3>Memory</h3>
-
- <p>Memory information is divided into three pages.
-
- <p>The first page, <strong>Memory</strong>, shows information
- similar to what you can obtain on a living node with
- <code>c:memory()</code>. This will only be present in dumps from
- OTP R9C and later.
- <a href=/crashdump_erts_doc/crash_dump.html#memory>More...</a>
-
- <p>The <strong>Allocated areas</strong> page shows information
- similar to what you can obtain on a living node with
- <code>erlang:system_info(allocated_areas)</code>.
- <a href=/crashdump_erts_doc/crash_dump.html#allocated_areas>More...</a>
-
- <p>The <strong>Allocator information</strong> page shows
- information about allocators. The contents of the page will vary
- with the version.
- <a href=/crashdump_erts_doc/crash_dump.html#allocator>More...</a>
-
- <center>
-
- </center>
-
-
- <h3>Documentation</h3>
-
- <p>'Crashdump Viewer help' is this document.
-
- <p>'How to interpret Erlang crashdumps' is a document from the
- Erlang runtime system describing details in the raw
- crashdumps. Here you will also find information about each
- single field in the different information pages.
-
-</blockquote>
-<center>
-<hr>
-<font SIZE=-1>
-
-Copyright &copy; 1991-2003
-<a HREF="http://www.erlang.se">Ericsson Utvecklings AB</a><br>
-<!--#include virtual="/ssi/otp_footer.html"-->
-</font>
-</center>
-</body>
-</html>