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  1. Moodle
  2. MDL-40579

Restore performance improvements

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Details

    • Epic
    • Status: Closed
    • Major
    • Resolution: Won't Do
    • 2.4.5, 2.5
    • None
    • Backup, Performance
    • MOODLE_24_STABLE, MOODLE_25_STABLE
    • Restore performance

    Description

      Restore performance is very poor as it does large number of database interactions. It also does millions of function calls.

      There are a number of optimizations that can be included to improve the performance of the restore function.

      Attachments

        Issue Links

          has a non-specific relationship to

          Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-29439 Quiz restoration is very slow if the backup contains lots of questions

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

          Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-30018 Quiz Duplication With Carriage Return Results in a Fatal Error

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

          Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-39726 Question restoration should not use a loop over questions, it can be done once per context

          • Major - Major loss of function, incorrect output
          • Closed
          has been marked as being related by

          Sub-task - Issues are sometimes broken into multiple sub-tasks. MDL-23547 improvement: build one static cache for get/set_get_backup_ids_record()

          • Minor - Minor loss of function where workaround is possible
          • Closed

          Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-44813 restoring courses in 2.6.1 very slow

          • Minor - Minor loss of function where workaround is possible
          • Closed
          is blocked by

          Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-40538 cachestore_static, cachestore_session: array_key_exists slow

          • Minor - Minor loss of function where workaround is possible
          • Closed

          Improvement - An enhancement to an existing Moodle feature. MDL-40677 Implement maxsize support on cache stores where it would be useful.

          • Minor - Minor loss of function where workaround is possible
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-43041 Can not restore from Moodle 2.5.1 backup file (with 1479 questions) to Moodle 2.6 even after waiting for 6 hours

          • Minor - Minor loss of function where workaround is possible
          • Closed
          will be (partly) resolved by

          Sub-task - Issues are sometimes broken into multiple sub-tasks. MDL-49734 Develop backup/restore ID mapping cache

          • Minor - Minor loss of function where workaround is possible
          • Closed

          Improvement - An enhancement to an existing Moodle feature. MDL-40793 Allow profiling comparisons with more than one previous run

          • Minor - Minor loss of function where workaround is possible
          • Closed

          Activity

            People

              mr-russ Russell Smith
              mr-russ Russell Smith
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              12 Vote for this issue
              Watchers:
              23 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: