0000849: Decrease tracing/profiling overhead

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Date Submitted

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0000849

Xdebug

Feature/Change request

public

2012-06-02 19:14

2012-06-25 19:06

Reporter

dinu

Assigned To

Priority

normal

Severity

minor

Reproducibility

always

Status

new

Resolution

open

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Product Version

Target Version

Fixed in Version

Summary

0000849: Decrease tracing/profiling overhead

Description

As mentioned, I get 200% to 600% execution timings when tracing a script; is it at all possible to reduce this overhead? Especially since I'm guessing it's roughly linear with the number of function calls, it makes profiling scripts with large number of funcalls difficult.

For instance, I have a script that runs under 400ms, but does in excess of 100K calls; this leads to a traced execution time of 2s. The functions at the bottom of the call tree (those that get called a lot) pull a lot of weight for being traced, although execution in a timed cycle shows they don't pulled nearly as much weight as the profile reports.

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Operating System

PHP Version

5.3.3

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Notes
(0002279) derick (administrator) 2012-06-25 19:06	This is definitely on the plan!

Issue History
Date Modified	Username	Field	Change
2012-06-02 19:14	dinu	New Issue
2012-06-25 19:06	derick	Note Added: 0002279