Performance Lab 2.5.0

Does Performance Lab work with WordPress 6.3 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: 45.27 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
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 3

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=c10ae905c0
Aspect after-activation
HTTP status 200
Load time 0.250 s
Memory usage 2.81 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 0.152 s
Memory usage 2.81 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 0.175 s
Memory usage 3.17 MiB
JS errors None
Resource errors None


URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.347 s0.322 s-0.025 s2.82 MiB2.87 MiB+ 52.66 KiB
/wp-admin/edit.php0.201 s0.189 s-0.012 s2.85 MiB2.9 MiB+ 52.3 KiB
/wp-admin/post-new.php0.752 s0.553 s-0.199 s5.21 MiB5.27 MiB+ 55.87 KiB
/wp-admin/upload.php0.522 s0.423 s-0.099 s2.77 MiB2.8 MiB+ 34.89 KiB
/wp-admin/options-writing.php0.223 s0.214 s-0.009 s2.76 MiB2.79 MiB+ 26.82 KiB
/wp-admin/media-new.php0.393 s0.237 s-0.156 s2.74 MiB2.79 MiB+ 47.08 KiB
/wp-admin/edit-tags.php?taxonomy=category0.190 s0.204 s+0.014 s2.76 MiB2.81 MiB+ 52.25 KiB
/wp-admin/post-new.php?post_type=page0.575 s0.525 s-0.050 s5.21 MiB5.26 MiB+ 51.45 KiB
/wp-admin/options-discussion.php0.435 s0.224 s-0.211 s2.75 MiB2.78 MiB+ 35.35 KiB
/wp-admin/edit-comments.php0.214 s0.208 s-0.006 s2.78 MiB2.81 MiB+ 34.88 KiB
/0.272 s0.193 s-0.079 s3.13 MiB3.18 MiB+ 54.4 KiB
Average 0.375 s0.299 s-0.076 s3.25 MiB3.3 MiB+ 45.27 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 2,795 1,860 36

PHP Code Analysis | More results »

Lines of code 2,603
Total complexity 624
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 100


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