Tests: reuse network namespaces #4966
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pb8o
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Priority: Low
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## main #4966 +/- ##
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Coverage 83.95% 83.95%
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Files 248 248
Lines 27839 27839
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Hits 23371 23371
Misses 4468 4468
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Re-using namespaces saves a whole minute of the test run: before: 302 passed, 25 skipped in 303.29s (0:05:03) after: 301 passed, 25 skipped in 241.77s (0:04:01) Signed-off-by: Pablo Barbáchano <[email protected]>
Now that there are no bottlenecks we can increase the concurrency of the tests. This speeds up functional test runs by 20-30% in average. | host | before (s) | after (s) | change | |----------|------------|-----------|--------| | m7g 5.10 | 195 | 161 | -18% | | m7g 6.1 | 225 | 172 | -24% | | m5n 5.10 | 466 | 274 | -40% | | m5n 6.1 | 440 | 291 | -33% | Signed-off-by: Pablo Barbáchano <[email protected]>
Remove unused import Signed-off-by: Pablo Barbáchano <[email protected]>
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Status: Awaiting review
roypat
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Jan 8, 2025
kalyazin
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Jan 8, 2025
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Changes
Reuse network namespaces during integration tests. This avoids spending time creating network devices and namespaces, which is a slow operation because of networking lock contention.
After doing that, since we don't have lock contention anymore, we can double the number of test workers and see an ~25% improvement on top of that.
Reason
To make functional test runs faster. Though this is low priority and the functional tests are not the long pole, this change is relatively small and self-contained.
The 2 changes together almost half the execution time:
License Acceptance
By submitting this pull request, I confirm that my contribution is made under
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Certificate of Origin and signing off your commits, please check
CONTRIBUTING.md.PR Checklist
tools/devtool checkstyleto verify that the PR passes theautomated style checks.
how they are solving the problem in a clear and encompassing way.
in the PR.
CHANGELOG.md.Runbook for Firecracker API changes.
integration tests.
TODO.rust-vmm.