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Type: Improvement
Resolution: Fixed
Priority: Minor
Fix Version/s: 2.9
Affects Version/s: 2.8
Component/s: Backup
Labels:
- ci

Affected Branches:
MOODLE_28_STABLE
Fixed Branches:
MOODLE_29_STABLE
Epic Link:
Restore performance
Pull from Repository:
git://github.com/mr-russ/moodle.git
Pull Main Branch:
~~MDL-49755~~
Pull Main Diff URL:
https://github.com/mr-russ/moodle/compare/1d3fd63...MDL-49755
Testing Instructions:

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1. Create a "Large" test course (Site Admin > Development > Make a test course.
2. Backup the test course. (Be patient, it takes time for the screens to progress)
3. Restore the test course. (Again screens are slow)
4. Verify Course restored successfully (correct number of sections, pages still work).

Restore time should be in a number of minutes, not a number of hours.

Testing multiple restores in a single process should be completed as well, however I'm not sure how to create that scenario. Ideas?

Show
1. Create a "Large" test course (Site Admin > Development > Make a test course. 2. Backup the test course. (Be patient, it takes time for the screens to progress) 3. Restore the test course. (Again screens are slow) 4. Verify Course restored successfully (correct number of sections, pages still work). Restore time should be in a number of minutes, not a number of hours. Testing multiple restores in a single process should be completed as well, however I'm not sure how to create that scenario. Ideas?

When restoring complicated courses, backup_general_helper::get_backup_information() can be called many times. In the example of a Large example course the following happens

Calls to get_backup_information	5546
Time per call	4-5 seconds
Restore Time	6.3 hours

Caching get_backup_information can provide a significant performance improvement as much of the calculation of the restore is stored in memory.

has been marked as being related by

MDL-38189 META Backup/restore issues with large courses

Closed

MDL-44813 restoring courses in 2.6.1 very slow

Closed

will help resolve

MDL-38723 Advanced Backup and Restore option for dealing with complex or large courses a.k.a Course Editor

Closed

Assignee:: Russell Smith

Reporter:: Russell Smith

Peer reviewer:: Eloy Lafuente (stronk7)

Integrator:: Dan Poltawski

Tester:: Mark Nelson

Participants:: CiBoT, Dan Poltawski, Eloy Lafuente (stronk7), Marina Glancy, Mark Nelson, Martin Dougiamas, Russell Smith

Votes:: 0 Vote for this issue

Watchers:: 6 Start watching this issue

Created:: 06/Apr/15 2:01 AM

Updated:: 03/May/15 3:07 PM

Resolved:: 18/Apr/15 3:54 AM

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