But the number of my routines is smaller than the number of cpu 在2021年2月2日星期二 UTC+8 上午11:17:55<ren...@ix.netcom.com> 写道：
> If you look at the “disrupter pattern” you’ll see what I mean. If the > tasks are cpu bound - by having more threads/routines than cpus you cause > inefficiencies (scheduling overhead, cache locality / invalidation, lock > contention). > > On Feb 1, 2021, at 9:02 PM, 颜文泽 <nnsm...@gmail.com> wrote: > > > > > I don't understand what you mean. > 在2021年2月2日星期二 UTC+8 上午10:56:41<ren...@ix.netcom.com> 写道： > >> Having more cpu bound routines than you have physical cpus is not a good >> idea. >> >> On Feb 1, 2021, at 8:21 PM, 颜文泽 <nnsm...@gmail.com> wrote: >> >> I'll try 1.14, when writing cpu-intensive programs (I'm mainly a >> database), I found that cache misses from routines switching is also a >> headache and I don't know how to deal with it. >> >> >> >> 在2021年2月2日星期二 UTC+8 上午8:10:12<Ian Lance Taylor> 写道： >> >>> On Mon, Feb 1, 2021 at 4:07 PM Wojciech S. Czarnecki <oh...@fairbe.org> >>> wrote: >>> > >>> > Dnia 2021-02-01, o godz. 11:12:22 >>> > Ian Lance Taylor <ia...@golang.org> napisał(a): >>> > >>> > > On Mon, Feb 1, 2021 at 9:33 AM 颜文泽 <nnsm...@gmail.com> wrote: >>> > >>> > > > go version go1.13 linux/amd64 >>> > >>> > > Goroutines that run for a long time without yielding the processor >>> are preempted. >>> > >>> > Since go1.14 TMK. OP is using 1.13. >>> >>> In Go 1.14 and later they are preempted by signals. Before Go 1.14 >>> they were still preempted, it just happened when making a function >>> call (which meant that the preemption could be arbitrarily delayed). >>> >>> Ian >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golang-nuts...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/golang-nuts/26178bb4-9f60-4fd4-bf3a-9c170e18152bn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/golang-nuts/26178bb4-9f60-4fd4-bf3a-9c170e18152bn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/golang-nuts/22d5d008-a3f9-4296-92ba-7306660cad71n%40googlegroups.com > > <https://groups.google.com/d/msgid/golang-nuts/22d5d008-a3f9-4296-92ba-7306660cad71n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/b1cf31f8-7e0d-4479-8280-30d2e6ab244bn%40googlegroups.com.
