Performance Lab 2.6.1

Does Performance Lab work with WordPress 6.3.1 and PHP 8.1.12? A smoke test was performed on .


No PHP errors, warnings or notices
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Looks good! No problems were detected.

Memory usage: 54.7 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: insignificant.
The plugin didn't make the site noticeably slower.

WordPress version6.3.1
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 100,000+ page

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Pages 4

Plugins ‹ Test site — WordPress

Page screenshot: Plugins ‹ Test site — WordPress
URL /wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL /wp-admin/plugins.php?action=activate&plugin=performance-lab%2Fload.php&plugin_status=all&paged=1&s&_wpnonce=7a7a2af979
Aspect after-activation
HTTP status 200
Load time 0.304 s
Memory usage 2.86 MiB
JS errors None
Resource errors None

Tools → Server-Timing

Page screenshot: Tools → Server-Timing
URL /wp-admin/tools.php?page=perflab-server-timing
Aspect menu-item
HTTP status 200
Load time 0.171 s
Memory usage 2.8 MiB
JS errors None
Resource errors None

Settings → Performance

Page screenshot: Settings → Performance
URL /wp-admin/options-general.php?page=perflab-modules
Aspect menu-item
HTTP status 200
Load time 0.176 s
Memory usage 2.82 MiB
JS errors None
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
Aspect front-page
HTTP status 200
Load time 0.190 s
Memory usage 3.18 MiB
JS errors None
Resource errors None


URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.338 s0.301 s-0.037 s2.82 MiB2.88 MiB+ 62.8 KiB
/wp-admin/edit.php0.194 s0.205 s+0.011 s2.85 MiB2.91 MiB+ 62.44 KiB
/wp-admin/post-new.php0.741 s0.618 s-0.123 s5.21 MiB5.28 MiB+ 66.01 KiB
/wp-admin/upload.php0.623 s0.438 s-0.185 s2.77 MiB2.81 MiB+ 45.02 KiB
/wp-admin/options-writing.php0.225 s0.183 s-0.042 s2.76 MiB2.8 MiB+ 36.96 KiB
/wp-admin/media-new.php0.508 s0.242 s-0.266 s2.74 MiB2.8 MiB+ 57.21 KiB
/wp-admin/edit-tags.php?taxonomy=category0.195 s0.212 s+0.017 s2.76 MiB2.82 MiB+ 62.39 KiB
/wp-admin/post-new.php?post_type=page0.635 s0.592 s-0.043 s5.21 MiB5.27 MiB+ 61.59 KiB
/wp-admin/options-discussion.php0.450 s0.209 s-0.241 s2.75 MiB2.79 MiB+ 45.49 KiB
/wp-admin/edit-comments.php0.263 s0.190 s-0.073 s2.78 MiB2.82 MiB+ 45.02 KiB
/0.291 s0.177 s-0.114 s3.13 MiB3.18 MiB+ 56.8 KiB
Average 0.406 s0.306 s-0.100 s3.25 MiB3.31 MiB+ 54.7 KiB

Code Statistics

Note: Third-party libraries and minified JS/CSS files are excluded from these statistics where possible, so the numbers you see here may be lower than those reported by other tools.

Language % Lines of code Comment lines Files
Total 3,187 1,993 37

PHP Code Analysis | More results »

Lines of code 2,990
Total complexity 661
Median class complexity 12.0
Median method complexity 2.0
Most complex class Perflab_Server_Timing
Most complex function webp_uploads_remove_sources_files()
Classes 4
Methods 17
Functions 109


Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.

No new entries found.

PHP Error Log

The log file is empty.

See also: All tests for this plugin, How to Hide Performance Lab Admin Menus