Re: droped out precise time calculations in src/interfaces/libpq/fe-connect.c
От | Bruce Momjian |
---|---|
Тема | Re: droped out precise time calculations in src/interfaces/libpq/fe-connect.c |
Дата | |
Msg-id | 200210161501.g9GF1Xs25718@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: droped out precise time calculations in src/interfaces/libpq/fe-connect.c (Tom Lane <tgl@sss.pgh.pa.us>) |
Список | pgsql-hackers |
Tom Lane wrote: > Bruce Momjian <pgman@candle.pha.pa.us> writes: > > Yes, the new code has _three_ time() calls, rather than the old code > > that I think only had two. I was going to mention it but I figured > > time() was a pretty light system call, sort of like getpid(). > > I needed the additional time() calls so the computation of remaining > > time was more accurate, i.e. we are not resetting the timer on a > > select() EINTR anymore. > > As long as the time() calls aren't invoked in the default no-timeout > case, I doubt that the small additional slowdown matters too much. > Still, one could ask why we are expending extra cycles to make the > timeout more accurate. Who the heck needs an accurate timeout on > connect? Can you really give a use-case where the user won't have > picked a number out of the air anyway? Yes, the default no-timeout case makes no time() calls. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania19073
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