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In 2021, OProfile is set to be removed from version 5.12 of the Linux kernel, with the user-space tools continuing to work by using the kernel's perf system.
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mode which uses hardware logic to record events without any active code needed. In Linux 2.2/2.4 only 32-bit
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is used to start and stop the daemon, which collects profiling data. This data is periodically saved to the
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Smashing performance with OProfile. Identifying performance bottlenecks in real-world systems
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An
Overview of Software Performance Analysis Tools and Techniques: From GProf to DTrace
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In 2012 two IBM engineers recognized OProfile as one of the two most commonly used
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344:# If there are any issues in starting like --vm-linux just follow the instructions
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457:"Evaluate performance for Linux on POWER: Analyze performance using Linux tools"
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are supported; in Linux 2.6 there is wider support: x86 (32 and 64 bit),
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405:# clears the profile data which was stored in the sample file given
493:"OProfile Kernel Code Slated for Removal in Linux 5.12 - Phoronix"
227:). However, this mode is unable to measure kernel functions where
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The two most commonly-used tools for PCM profiling on Linux are
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Netto, Adhemerval
Zanella; Arnold, Ryan S. (2012-06-12).
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OProfile can profile an entire system or its parts, from
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547:// IBM DeveloperWorks, Technical Library, 16 Oct 2003
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463:. IBM DeveloperWorks Technical library. IBM
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231:are disabled. Newer CPU models support a
219:The most widely supported kernel mode of
540:// Wide Open Magazine, 2004, pages 53–62
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554:, (2006) "2.2.2 Overview of Oprofile"
280:profiling tools on Linux, alongside
27:Statistical profiling tool for Linux
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273:are supported only on x86 and ARM.
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417:List of performance analysis tools
177:. John Levon wrote it in 2001 for
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327:converts from oprofile data into
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196:and several user-space tools.
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538:Tuning programs with OProfile
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61:1.4.0 / July 20, 2020
309:shows basic profiling data.
233:hardware performance counter
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391:# stops collecting the data
278:performance counter monitor
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225:Gathering profiling events
223:uses a system timer (See:
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185:project; it consists of a
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511:oprofile.sourceforge.io
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313:can produce annotated
181:version 2.4 after his
568:Linux kernel features
436:Interview: John Levon
63:; 4 years ago
396:opcontrol--shutdown
331:-compatible format.
507:"4. Tools summary"
441:2012-05-13 at the
206:interrupt routines
34:Original author(s)
398:# stops the demon
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16:(Redirected from
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291:User-space tools
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465:. Retrieved
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371:example_file
354:example_file
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179:Linux kernel
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144:.sourceforge
381:output_file
271:Call graphs
168:statistical
562:Categories
536:W. Cohen,
467:2014-10-21
423:References
366:opreport-l
311:opannotate
303:directory.
229:interrupts
191:user-space
189:module, a
81:Written in
68:2020-07-20
38:John Levon
573:Profilers
335:Example:
297:opcontrol
282:perf tool
245:DEC Alpha
214:processes
160:computing
474:OProfile
439:Archived
411:See also
319:assembly
307:opreport
221:oprofile
164:OProfile
142:oprofile
119:Profiler
102:Platform
18:Oprofile
325:opgprof
315:sources
257:sparc64
210:drivers
200:Details
137:Website
126:License
66: (
194:daemon
187:kernel
329:gprof
265:AVR32
261:ppc64
183:M.Sc.
175:Linux
148:/news
95:Linux
478:perf
476:and
376:>
249:MIPS
241:IA64
239:and
173:for
146:.net
114:Type
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378:$ {
368:$ {
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317:or
253:ARM
237:x86
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158:In
131:GPL
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84:C
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