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Type: Epic
Resolution: Won't Do
Priority: Major
Fix Version/s: None
Affects Version/s: 2.4.5, 2.5
Component/s: Backup, Performance
Labels:
- triaged

Affected Branches:
MOODLE_24_STABLE, MOODLE_25_STABLE
Epic Name:
Restore performance

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.

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backup-moodle2-course-7301-maitkin@ltu.edu.au-20130624-1005-nu.mbz
1.90 MB
09/Jul/13 6:20 PM
baseline_restore_full_cf52465d0a47b597390c060fa28398c8.png
1.05 MB
12/Jul/13 7:36 AM
baseline_restore_full_stats.png
87 kB
12/Jul/13 7:36 AM
Baseline_restore_precheck_89104786ee7a93d605b1b82c84424893.png
737 kB
09/Jul/13 6:37 PM
baseline_restore_precheck_stats.png
71 kB
09/Jul/13 6:37 PM

has a non-specific relationship to

MDL-29439 Quiz restoration is very slow if the backup contains lots of questions

Closed

MDL-30018 Quiz Duplication With Carriage Return Results in a Fatal Error

Closed

MDL-39726 Question restoration should not use a loop over questions, it can be done once per context

Closed

has been marked as being related by

MDL-23547 improvement: build one static cache for get/set_get_backup_ids_record()

Closed

MDL-44813 restoring courses in 2.6.1 very slow

Closed

is blocked by

MDL-40538 cachestore_static, cachestore_session: array_key_exists slow

Closed

MDL-40677 Implement maxsize support on cache stores where it would be useful.

Closed

is duplicated by

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

Closed

will be (partly) resolved by

MDL-49734 Develop backup/restore ID mapping cache

Closed

MDL-40793 Allow profiling comparisons with more than one previous run

Closed

(2 is blocked by, 1 is duplicated by, 2 will be (partly) resolved by)

Assignee:: Russell Smith

Reporter:: Russell Smith

Participants:: Gerald Grow, Marina Glancy, Matt Porritt, Michael de Raadt, Russell Smith, Tim Vaughan

Votes:: 12 Vote for this issue

Watchers:: 23 Start watching this issue

Created:: 09/Jul/13 5:27 PM

Updated:: 12/Dec/22 6:58 PM

Resolved:: 02/Dec/22 7:42 AM

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