(Split off from T150269)
The module is rebuilt (e.g. cache miss from Varnish) 5-15x per second, which quite high.
This is a symptom caused by one of these problems (usually both):
- The module is loaded significantly more often than it is actually used. (Lazy-load?)
- The module is somehow not being cached properly. Either it, or a module it is usually loaded alongside of, is continuously invalidating its cache or module version hash.
Compare to NavigationTiming, for example: