MediaWiki  1.29.1
ProfilerXhprof Class Reference

Profiler wrapper for XHProf extension. More...

Inheritance diagram for ProfilerXhprof:
Collaboration diagram for ProfilerXhprof:

Public Member Functions

 __construct (array $params=[])
 
 close ()
 No-op for xhprof profiling. More...
 
 getFunctionStats ()
 Get the aggregated inclusive profiling data for each method. More...
 
 getOutput ()
 Returns a profiling output to be stored in debug file. More...
 
 getRawData ()
 Retrieve raw data from xhprof. More...
 
 getXhprofData ()
 
 scopedProfileIn ( $section)
 Mark the start of a custom profiling frame (e.g. More...
 
- Public Member Functions inherited from Profiler
 getContentType ()
 Get the content type sent out to the client. More...
 
 getContext ()
 Gets the context for this Profiler. More...
 
 getProfileID ()
 
 getTemplated ()
 Was this call as templated or not. More...
 
 getTransactionProfiler ()
 
 logData ()
 Log the data to some store or even the page output. More...
 
 logDataPageOutputOnly ()
 Output current data to the page output if configured to do so. More...
 
 profileIn ( $functionname)
 
 profileOut ( $functionname)
 
 scopedProfileOut (SectionProfileCallback &$section=null)
 
 setContext ( $context)
 Sets the context for this Profiler. More...
 
 setProfileID ( $id)
 
 setTemplated ( $t)
 Mark this call as templated or not. More...
 

Protected Member Functions

 getFunctionReport ()
 Get a report of profiled functions sorted by inclusive wall clock time in descending order. More...
 

Protected Attributes

SectionProfiler $sprofiler
 Profiler for explicit, arbitrary, frame labels. More...
 
 $xhprofData
 
- Protected Attributes inherited from Profiler
IContextSource $context = null
 Current request context. More...
 
array $params = []
 All of the params passed from $wgProfiler. More...
 
string bool $profileID = false
 Profiler ID for bucketing data. More...
 
bool $templated = false
 Whether MediaWiki is in a SkinTemplate output context. More...
 
TransactionProfiler $trxProfiler
 

Private Member Functions

 shouldExclude ( $name)
 Check if a function or section should be excluded from the output. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from Profiler
static instance ()
 Singleton. More...
 
static replaceStubInstance (Profiler $profiler)
 Replace the current profiler with $profiler if no non-stub profiler is set. More...
 

Detailed Description

Profiler wrapper for XHProf extension.

$wgProfiler['class'] = 'ProfilerXhprof';
$wgProfiler['flags'] = XHPROF_FLAGS_NO_BUILTINS;
$wgProfiler['output'] = 'text';
$wgProfiler['visible'] = true;
$wgProfiler['class'] = 'ProfilerXhprof';
$wgProfiler['flags'] = XHPROF_FLAGS_CPU | XHPROF_FLAGS_MEMORY | XHPROF_FLAGS_NO_BUILTINS;
$wgProfiler['output'] = 'udp';

ProfilerXhprof profiles all functions using the XHProf PHP extenstion. For PHP5 users, this extension can be installed via PECL or your operating system's package manager. XHProf support is built into HHVM.

To restrict the functions for which profiling data is collected, you can use either a whitelist ($wgProfiler['include']) or a blacklist ($wgProfiler['exclude']) containing an array of function names. Shell-style patterns are also accepted.

It is also possible to use the Tideways PHP extension, which is mostly a drop-in replacement for Xhprof. Just change the XHPROF_FLAGS_* constants to TIDEWAYS_FLAGS_*.

Author
Bryan Davis bd808.nosp@m.@wik.nosp@m.imedi.nosp@m.a.or.nosp@m.g
Note
© 2014 Bryan Davis and Wikimedia Foundation.
See also
Xhprof
https://php.net/xhprof
https://github.com/facebook/hhvm/blob/master/hphp/doc/profiling.md
https://github.com/tideways/php-profiler-extension

Definition at line 58 of file ProfilerXhprof.php.

Constructor & Destructor Documentation

◆ __construct()

ProfilerXhprof::__construct ( array  $params = [])
Parameters
array$params
See also
Xhprof::__construct()

Reimplemented from Profiler.

Definition at line 74 of file ProfilerXhprof.php.

References $flags, $options, Profiler\$params, and Xhprof\enable().

Member Function Documentation

◆ close()

ProfilerXhprof::close ( )

No-op for xhprof profiling.

Reimplemented from Profiler.

Definition at line 102 of file ProfilerXhprof.php.

◆ getFunctionReport()

ProfilerXhprof::getFunctionReport ( )
protected

Get a report of profiled functions sorted by inclusive wall clock time in descending order.

Each line of the report includes this data:

  • Function name
  • Number of times function was called
  • Total wall clock time spent in function in microseconds
  • Minimum wall clock time spent in function in microseconds
  • Average wall clock time spent in function in microseconds
  • Maximum wall clock time spent in function in microseconds
  • Percentage of total wall clock time spent in function
  • Total delta of memory usage from start to end of function in bytes
Returns
string

Definition at line 202 of file ProfilerXhprof.php.

References $out, as, and getFunctionStats().

Referenced by getOutput().

◆ getFunctionStats()

ProfilerXhprof::getFunctionStats ( )

Get the aggregated inclusive profiling data for each method.

The percent time for each time is based on the current "total" time used is based on all methods so far. This method can therefore be called several times in between several profiling calls without the delays in usage of the profiler skewing the results. A "-total" entry is always included in the results.

When a call chain involves a method invoked within itself, any entries for the cyclic invocation should be be demarked with "@". This makes filtering them out easier and follows the xhprof style.

Returns
array List of method entries arrays, each having:
  • name : method name
  • calls : the number of invoking calls
  • real : real time elapsed (ms)
  • real : percent real time
  • cpu : CPU time elapsed (ms)
  • cpu : percent CPU time
  • memory : memory used (bytes)
  • memory : percent memory used
  • min_real : min real time in a call (ms)
  • max_real : max real time in a call (ms)
Since
1.25

Reimplemented from Profiler.

Definition at line 133 of file ProfilerXhprof.php.

References $fname, as, getXhprofData(), and shouldExclude().

Referenced by getFunctionReport().

◆ getOutput()

ProfilerXhprof::getOutput ( )

Returns a profiling output to be stored in debug file.

Returns
string

Reimplemented from Profiler.

Definition at line 182 of file ProfilerXhprof.php.

References getFunctionReport().

◆ getRawData()

ProfilerXhprof::getRawData ( )

Retrieve raw data from xhprof.

Returns
array

Definition at line 237 of file ProfilerXhprof.php.

References getXhprofData().

◆ getXhprofData()

ProfilerXhprof::getXhprofData ( )
Returns
XhprofData

Definition at line 87 of file ProfilerXhprof.php.

References $xhprofData, and Xhprof\disable().

Referenced by getFunctionStats(), and getRawData().

◆ scopedProfileIn()

ProfilerXhprof::scopedProfileIn (   $section)

Mark the start of a custom profiling frame (e.g.

DB queries). The frame ends when the result of this method falls out of scope.

Parameters
string$section
Returns
ScopedCallback|null
Since
1.25

Reimplemented from Profiler.

Definition at line 94 of file ProfilerXhprof.php.

References $section.

◆ shouldExclude()

ProfilerXhprof::shouldExclude (   $name)
private

Check if a function or section should be excluded from the output.

Parameters
string$nameFunction or section name.
Returns
bool

Definition at line 111 of file ProfilerXhprof.php.

References $name, and as.

Referenced by getFunctionStats().

Member Data Documentation

◆ $sprofiler

SectionProfiler ProfilerXhprof::$sprofiler
protected

Profiler for explicit, arbitrary, frame labels.

Definition at line 68 of file ProfilerXhprof.php.

◆ $xhprofData

XhprofData null ProfilerXhprof::$xhprofData
protected

Definition at line 62 of file ProfilerXhprof.php.

Referenced by getXhprofData().


The documentation for this class was generated from the following file:
$wgProfiler
$wgProfiler
Definition: WebStart.php:73