Vhost user blk metrics #4226
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Vhost user blk metrics #4226
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## main #4226 +/- ##
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+ Coverage 81.74% 81.76% +0.01%
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Files 237 238 +1
Lines 29179 29223 +44
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- Misses 5326 5329 +3
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Some minor comments inline and also:
First commit: feat(metrics): Add vhost user metrics
Suggestion for re-wording the commit message:
feat(metrics): add vhost-user metrics
Define metrics for vhost-user devices. These are metrics that are
independent of the device type. They refer to events during
initialization, configuration and activation of a vhost-user device.
ShadowCurse
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Define metrics for vhost-user devices. These are metrics that are independent of the device type. They refer to events during initialization, configuration and activation of a vhost-user device. Signed-off-by: Sudan Landge <sudanl@amazon.com>
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Use 3 metrics for vhost user block device: 1. to report activate failures. 2. to report failure to read config space. 3. to report time taken to init the device in micro seconds. 4. to report time taken to activate the device in micro seconds. Signed-off-by: Sudan Landge <sudanl@amazon.com>
Report addition of vhost user device metrics with an example. Signed-off-by: Sudan Landge <sudanl@amazon.com>
Flush vhost user device metrics as part of METRICS flush using a proxy serializer. Signed-off-by: Sudan Landge <sudanl@amazon.com>
Make FirecrackerMetrics schema local to validate function so that vhost-user schema added by different tests don't conflict with each other. Move timestamp validation up so that the check doesn't generate any false results. Signed-off-by: Sudan Landge <sudanl@amazon.com>
Add schema to validate breaking change in vhost-user metrics. Re-organize metrics validation function to accommodate vhost-user which has per device metrics but does not have aggregate metrics. Use existing vhost-user tests to check that there is no breaking change in vhost-user-block device metrics. Signed-off-by: Sudan Landge <sudanl@amazon.com>
Add basic test to check shared inc and store metrics. Signed-off-by: Sudan Landge <sudanl@amazon.com>
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Changes
Reason
Vhost user block is a new device which doesn't have any metrics.
License Acceptance
By submitting this pull request, I confirm that my contribution is made under
the terms of the Apache 2.0 license. For more information on following
Developer Certificate of Origin and signing off your commits, please check
CONTRIBUTING.md.PR Checklist
[ ] If a specific issue led to this PR, this PR closes the issue.[ ] API changes follow the Runbook for Firecracker API changes.CHANGELOG.md.[ ] NewTODOs link to an issue.rust-vmm.