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  1. Moodle
  2. MDL-58646

Time to reset caches (compile Boost) recently became 3x slower

          Details

          • Testing Instructions:
            Hide
            1. Use boost theme
            2. Purge caches
            3. VERIFY: css is recreated and moodle is styled
            4. Change a boost setting such as brand colour
            5. VERIFY: css is changed and the look of site has changed
            6. VERIFY Using curl or the web inspector, examine the time to compile the scss before and after the patch and that with the patch, peformance is dramatically improved.

            For example, using curl, you can use styles_debug to do this:

            curl -s -w "\nConnect time: %{time_connect} Time to first byte: %{time_starttransfer} Total time: %{time_total} \n" -o /dev/null 'http://[YOUMOODLE]/theme/styles_debug.php?theme=boost&type=scss'

            Ensure that css is flipped when in an RTL language

            Show
            Use boost theme Purge caches VERIFY: css is recreated and moodle is styled Change a boost setting such as brand colour VERIFY: css is changed and the look of site has changed VERIFY Using curl or the web inspector, examine the time to compile the scss before and after the patch and that with the patch, peformance is dramatically improved. For example, using curl, you can use styles_debug to do this: curl -s -w "\nConnect time: %{time_connect} Time to first byte: %{time_starttransfer} Total time: %{time_total} \n" -o /dev/null 'http://[YOUMOODLE]/theme/styles_debug.php?theme=boost&type=scss' Ensure that css is flipped when in an RTL language
          • Workaround:
            Hide
            1. Edit /theme/boost/scss/moodle.scss
            2. Move the following lines at the END of the file 

              // Import font awesome.
              		 
              @import "fontawesome/moodle-path";
              		 
              @import "fontawesome/font-awesome";

            3. Save and done.

            On my system, the compile goes from taking about 16s, to 7.5s.

            Show
            Edit /theme/boost/scss/moodle.scss Move the following lines at the END of the file // Import font awesome. @import "fontawesome/moodle-path"; @import "fontawesome/font-awesome"; Save and done. On my system, the compile goes from taking about 16s, to 7.5s.
          • Affected Branches:
            MOODLE_33_STABLE
          • Fixed Branches:
            MOODLE_32_STABLE, MOODLE_33_STABLE
          • Pull from Repository:
          • Pull 3.3 Branch:
          • Pull 3.3 Diff URL:
          • Pull Master Branch:
            MDL-58646-master
          • Pull Master Diff URL:

            Description

            Based on some comments from David Mudrák (@mudrd8mz) in the dev chat, that I also had recently experienced... I did conduct this quick test using a 1-step feature:

            Feature: Simple feature
            		 
             
              @javascript
            		 
              Scenario: Simple feature
            		 
                Then I should see "test"

            running it against 32_STABLE, some weeks old master and current master... and it seems obvious that something has changed recently, making it really slower (30 seconds vs > 90 seconds in same installation:

            https://pastebin.com/K7wVci9f

            Worth checking what's going there. Specially in case if affects normal execution too.

            Ciao

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                  Issue Links

                  has a non-specific relationship to

                  Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-57387 When scss fails to compile, we should fall back to something good

                  • Minor - Minor loss of function where workaround is possible
                  • Closed
                  has been marked as being related by

                  Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-45771 Improve SCSS/JS caching for Behat

                  • Minor - Minor loss of function where workaround is possible
                  • Open
                  Testing discovered

                  Epic - gh.issue.epic.desc MDL-59122 Improvements to dynamic scss compilation/caching etc

                  • Critical - Crashes server, loss of data, severe memory leak
                  • Open

                  Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-59154 CSS Generation never locks correctly

                  • Blocker - Blocks development and/or testing, prevents Moodle from running (applicable to bugs only)
                  • Closed

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                        Dates

                        • Created:
                          Updated:
                          Resolved:
                          Fix Release Date:
                          10/Jul/17