Re: Re: Possible RFC: $_SERVER['REQUEST_TIME_FLOAT']

Op wo 12 apr. 2023 16:04 schreef Rowan Tommins <rowan.collins@gmail.com>: > On Wed, 12 Apr 2023 at 13:25, Herbert Groot Jebbink < > herbert@groot.jebbink.nl> wrote: > >> fallback for REQUEST_TIME and REQUEST_TIME_FLOAT to hrtime seems not >> possible, hrtime is not based on the actual time, hrtime can be used to >> calculate a duration or so, not to retrieve the actual time itself. >> > > Fair enough, but that makes my first question all the more important: are > there any situations or platforms where generating an hrtime value for > every request would have a performance penalty? > > How does that performance (for everyone) compare with a single call to > microtime(true) in your application to calculate the duration from > REQUEST_TIME_FLOAT to start of profiling, with all subsequent profiling > using hrtime? > ok, valid point, I also found out that setting a REQUEST_TIME_x variable at that point is too late, the request has been going on for a while, that's most likely the reason it's coming from the active SAPI and not from the current time. Thanks for the feedback, I will not file a RFC