Deprecations causing big performance hit in dev ProfilerListener #24625
Description
| Q | A |
|---|---|
| Bug report? | no |
| Feature request? | no |
| BC Break report? | no |
| RFC? | no |
| Symfony version | 3.4.x |
When you trigger a lot of deprecations, they will be stored in the profiler. However, this causes a massive performance hit on all dev pages triggering those. from 5 to 89 deprecations, causes the profiler listener to go from roughly 300 to 900ms.
For 3.4, this deprecation is causing most issues:
Pre deprecation
Post deprecation
The cause seems to be the amount of unserialize function calls in the Stub. Stub::unserialize() goes from 4870 to 23570.
Pre deprecation
Post deprecation
