Bug 1684167
| Summary: | Performance regression when using xxdiff | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Andrew Mike <amike> | ||||
| Component: | qt | Assignee: | Jan Grulich <jgrulich> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Desktop QE <desktop-qa-list> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | high | ||||||
| Version: | 7.6 | CC: | alanm, bgollahe, jwright, mboisver, mkolbas, tpelka | ||||
| Target Milestone: | rc | Keywords: | Regression, ZStream | ||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | |||||||
| : | 1701744 (view as bug list) | Environment: | |||||
| Last Closed: | 2019-08-06 13:19:05 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Bug Depends On: | |||||||
| Bug Blocks: | 1701744 | ||||||
| Attachments: |
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The libraries that came with the test package are the Qt 4.8.5 libraries that were shipped with RHEL 7.4, so it seems there's a performance regression. Using the reproducer is #c7, qt-4.8.7-3.el7 takes a few seconds and qt-4.8.7-2.el7 takes well over a minute to complete, verified. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2019:2349 |
Created attachment 1539565 [details] xxdiff test suite Description of problem: xxdiff appears to have performance issues when using the Qt libraries from RHEL 7.6 (as opposed to 7.4). Version-Release number of selected component (if applicable): qt-4.8.7-2.el7 How reproducible: Consistently. Steps to Reproduce: Download the attached test package and follow the instructions in the README. Actual results: xxdiff slows down by an order of magnitude when linked against the Qt 4.8.7 libraries. Expected results: xxdiff shows no performance slowdown when linked against the Qt 4.8.7 libraries. Additional info: