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Bug 1740222 - ISS slave takes much longer to sync content after upgrade to 5.8
Summary: ISS slave takes much longer to sync content after upgrade to 5.8
Alias: None
Product: Red Hat Satellite 5
Classification: Red Hat
Component: Satellite Synchronization
Version: 580
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Michael Mráka
QA Contact: Red Hat Satellite QA List
Depends On:
TreeView+ depends on / blocked
Reported: 2019-08-12 13:49 UTC by Julio Entrena Perez
Modified: 2019-08-15 10:47 UTC (History)
2 users (show)

Fixed In Version:
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Clone Of:
Last Closed: 2019-08-15 10:47:14 UTC
Target Upstream Version:

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Description Julio Entrena Perez 2019-08-12 13:49:37 UTC
Description of problem:
The time required for a Satellite 5.8 ISS slave to synchronise content has grown by an order of magnitude vs Satellite 5.7.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. On a Satellite 5.7 which is a ISS slave, run satellite-sync and measure time taken to complete the sync
2. Upgrade said ISS slave Satellite 5.7 to Satellite 5.8
3. Re-run same satellite-sync command in step 1 and measure time taken to complete the sync

Actual results:
Best case scneario is sync time doubling, worst case scenario is sync time taking many more times on a 5.8 ISS slave than on a 5.7.

Expected results:
Sync times remain comparable.

Additional info:
Steps "diffing" and "Linking packages to channels" seem to account for most of the increase in sync time.

Comment 4 Julio Entrena Perez 2019-08-15 10:47:14 UTC
Despite VACUUM was already executed after the upgrade to Satellite 5.8, running VACUUM again, this time with ANALYZE, brought the synchronization times back to what they were before the upgrade to Satellite 5.8.

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