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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
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>Application profiling</TITLE
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><DIV
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><A
NAME="SERVICES-PROFILE-GPROF"><DIV
CLASS="TITLEPAGE"
><H1
CLASS="TITLE"
>XX. Application profiling</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN15538"><P
>The profile_gprof package provides a mechanism to measure the
runtime performance of an application.  This is done by gathering
an execution histogram.</P
><P
>When profiling is started on the target device, a
<TT
CLASS="FUNCTION"
>TFTP</TT
>
server will be started
which exports the single file
<TT
CLASS="FILENAME"
>PROFILE.DAT</TT
>
This analysis data can then be fetched
by connecting to the target with a <TT
CLASS="FUNCTION"
>TFTP</TT
>
client program
and then be processed by the
<TT
CLASS="FUNCTION"
>gprof</TT
>
utility program.
<DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>NOTE: </B
>Be sure and specify binary mode transfers for this data file,
which may not be the default with on some <TT
CLASS="FUNCTION"
>TFTP</TT
>
client programs.</P
></BLOCKQUOTE
></DIV
>
<DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>NOTE: </B
>The port used for this <TT
CLASS="FUNCTION"
>TFTP</TT
> server is
configurable.  The default will be the IETF standard port
of 69/UDP, but it may be changed to any UDP port via the
<TT
CLASS="LITERAL"
>CYGNUM_PROFILE_TFTP_PORT</TT
> CDL option.</P
></BLOCKQUOTE
></DIV
></P
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>52. <A
HREF="profile-functions.html"
>Profiling functions</A
></DT
></DL
></DIV
></DIV
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>

Line No.	Rev	Author	Line
1	28	unneback	`<!-- Copyright (C) 2003 Red Hat, Inc. -->`
2			`<!-- This material may be distributed only subject to the terms -->`
3			`<!-- and conditions set forth in the Open Publication License, v1.0 -->`
4			`<!-- or later (the latest version is presently available at -->`
5			`<!-- http://www.opencontent.org/openpub/). -->`
6			`<!-- Distribution of the work or derivative of the work in any -->`
7			`<!-- standard (paper) book form is prohibited unless prior -->`
8			`<!-- permission is obtained from the copyright holder. -->`
9			`<HTML`
10			`><HEAD`
11			`><TITLE`
12			`>Application profiling</TITLE`
13			`><meta name="MSSmartTagsPreventParsing" content="TRUE">`
14			`<META`
15			`NAME="GENERATOR"`
16			`CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+`
17			`"><LINK`
18			`REL="HOME"`
19			`TITLE="eCos Reference Manual"`
20			`HREF="ecos-ref.html"><LINK`
21			`REL="PREVIOUS"`
22			`TITLE="CPU Load Measurements"`
23			`HREF="cpuload-functions.html"><LINK`
24			`REL="NEXT"`
25			`TITLE="Profiling functions"`
26			`HREF="profile-functions.html"></HEAD`
27			`><BODY`
28			`CLASS="PART"`
29			`BGCOLOR="#FFFFFF"`
30			`TEXT="#000000"`
31			`LINK="#0000FF"`
32			`VLINK="#840084"`
33			`ALINK="#0000FF"`
34			`><DIV`
35			`CLASS="NAVHEADER"`
36			`><TABLE`
37			`SUMMARY="Header navigation table"`
38			`WIDTH="100%"`
39			`BORDER="0"`
40			`CELLPADDING="0"`
41			`CELLSPACING="0"`
42			`><TR`
43			`><TH`
44			`COLSPAN="3"`
45			`ALIGN="center"`
46			`>eCos Reference Manual</TH`
47			`></TR`
48			`><TR`
49			`><TD`
50			`WIDTH="10%"`
51			`ALIGN="left"`
52			`VALIGN="bottom"`
53			`><A`
54			`HREF="cpuload-functions.html"`
55			`ACCESSKEY="P"`
56			`>Prev</A`
57			`></TD`
58			`><TD`
59			`WIDTH="80%"`
60			`ALIGN="center"`
61			`VALIGN="bottom"`
62			`></TD`
63			`><TD`
64			`WIDTH="10%"`
65			`ALIGN="right"`
66			`VALIGN="bottom"`
67			`><A`
68			`HREF="profile-functions.html"`
69			`ACCESSKEY="N"`
70			`>Next</A`
71			`></TD`
72			`></TR`
73			`></TABLE`
74			`><HR`
75			`ALIGN="LEFT"`
76			`WIDTH="100%"></DIV`
77			`><DIV`
78			`CLASS="PART"`
79			`><A`
80			`NAME="SERVICES-PROFILE-GPROF"><DIV`
81			`CLASS="TITLEPAGE"`
82			`><H1`
83			`CLASS="TITLE"`
84			`>XX. Application profiling</H1`
85			`><DIV`
86			`CLASS="PARTINTRO"`
87			`><A`
88			`NAME="AEN15538"><P`
89			`>The profile_gprof package provides a mechanism to measure the`
90			`runtime performance of an application. This is done by gathering`
91			`an execution histogram.</P`
92			`><P`
93			`>When profiling is started on the target device, a`
94			`<TT`
95			`CLASS="FUNCTION"`
96			`>TFTP</TT`
97			`>`
98			`server will be started`
99			`which exports the single file`
100			`<TT`
101			`CLASS="FILENAME"`
102			`>PROFILE.DAT</TT`
103			`>`
104			`This analysis data can then be fetched`
105			`by connecting to the target with a <TT`
106			`CLASS="FUNCTION"`
107			`>TFTP</TT`
108			`>`
109			`client program`
110			`and then be processed by the`
111			`<TT`
112			`CLASS="FUNCTION"`
113			`>gprof</TT`
114			`>`
115			`utility program.`
116			`<DIV`
117			`CLASS="NOTE"`
118			`><BLOCKQUOTE`
119			`CLASS="NOTE"`
120			`><P`
121			`><B`
122			`>NOTE: </B`
123			`>Be sure and specify binary mode transfers for this data file,`
124			`which may not be the default with on some <TT`
125			`CLASS="FUNCTION"`
126			`>TFTP</TT`
127			`>`
128			`client programs.</P`
129			`></BLOCKQUOTE`
130			`></DIV`
131			`>`
132			`<DIV`
133			`CLASS="NOTE"`
134			`><BLOCKQUOTE`
135			`CLASS="NOTE"`
136			`><P`
137			`><B`
138			`>NOTE: </B`
139			`>The port used for this <TT`
140			`CLASS="FUNCTION"`
141			`>TFTP</TT`
142			`> server is`
143			`configurable. The default will be the IETF standard port`
144			`of 69/UDP, but it may be changed to any UDP port via the`
145			`<TT`
146			`CLASS="LITERAL"`
147			`>CYGNUM_PROFILE_TFTP_PORT</TT`
148			`> CDL option.</P`
149			`></BLOCKQUOTE`
150			`></DIV`
151			`></P`
152			`></DIV`
153			`><DIV`
154			`CLASS="TOC"`
155			`><DL`
156			`><DT`
157			`><B`
158			`>Table of Contents</B`
159			`></DT`
160			`><DT`
161			`>52. <A`
162			`HREF="profile-functions.html"`
163			`>Profiling functions</A`
164			`></DT`
165			`></DL`
166			`></DIV`
167			`></DIV`
168			`></DIV`
169			`><DIV`
170			`CLASS="NAVFOOTER"`
171			`><HR`
172			`ALIGN="LEFT"`
173			`WIDTH="100%"><TABLE`
174			`SUMMARY="Footer navigation table"`
175			`WIDTH="100%"`
176			`BORDER="0"`
177			`CELLPADDING="0"`
178			`CELLSPACING="0"`
179			`><TR`
180			`><TD`
181			`WIDTH="33%"`
182			`ALIGN="left"`
183			`VALIGN="top"`
184			`><A`
185			`HREF="cpuload-functions.html"`
186			`ACCESSKEY="P"`
187			`>Prev</A`
188			`></TD`
189			`><TD`
190			`WIDTH="34%"`
191			`ALIGN="center"`
192			`VALIGN="top"`
193			`><A`
194			`HREF="ecos-ref.html"`
195			`ACCESSKEY="H"`
196			`>Home</A`
197			`></TD`
198			`><TD`
199			`WIDTH="33%"`
200			`ALIGN="right"`
201			`VALIGN="top"`
202			`><A`
203			`HREF="profile-functions.html"`
204			`ACCESSKEY="N"`
205			`>Next</A`
206			`></TD`
207			`></TR`
208			`><TR`
209			`><TD`
210			`WIDTH="33%"`
211			`ALIGN="left"`
212			`VALIGN="top"`
213			`>CPU Load Measurements</TD`
214			`><TD`
215			`WIDTH="34%"`
216			`ALIGN="center"`
217			`VALIGN="top"`
218			`> </TD`
219			`><TD`
220			`WIDTH="33%"`
221			`ALIGN="right"`
222			`VALIGN="top"`
223			`>Profiling functions</TD`
224			`></TR`
225			`></TABLE`
226			`></DIV`
227			`></BODY`
228			`></HTML`
229			`>`

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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [doc/] [html/] [ref/] [services-profile-gprof.html] - Blame information for rev 219