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HHVM's SlowTimer already logs grossly slow queries to logstash, but we might catch more pre-deploy performance regressions with a slow query digest for Beta Cluster. The raw log would also be useful for analyzing BC outages post-mortem. (See {T116447}) If such a digest proves valuable, we should consider making its review a formal part of the MW train deployment process.

HHVM's SlowTimer already logs grossly slow queries to logstash, but we might catch more pre-deploy performance regressions with a slow query digest for Beta Cluster. The raw log would also be useful for analyzing BC outages post-mortem. (See {T116447}) If such a digest proves valuable, we should consider making its review a formal part of the MW train deployment process.

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