Yo Hal! On Tue, 12 Sep 2023 16:55:12 -0700 Hal Murray via devel <devel@ntpsec.org> wrote:
> Gary said: > >James Browning via devel <devel@ntpsec.org> wrote: > >> It would appear there is a way to turn off GC under runtime/, > > How? Link? > > https://pkg.go.dev/runtime/debug#SetGCPercent > > It's not clear to me how to take advantage of that. You still have > to turn it on occasionally or your world will fill up with garbage. Assuming you create garbage. Avoiding creating garbage is hard. > I poked around a bit. I'm pretty sure that we can write a server > that doesn't generate any garbage when processing a normal client > request. The problem is not when you generate garbage, but when the garbage collector wakes up. > Occasinally, there is something in the 60-70 microseconds range. > They are rare enough that it's easy to miss one in a million sample > pairs of reading the clock. Which is why NTP slowly adjusts PLL's instead of jumping around. RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 g...@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can't measure it, you can't improve it." - Lord Kelvin
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