Type assertion is even slower than reflect: https://play.golang.org/p/zvUTEKDfiL
assert: count=33554432 time taken=499.061188ms direct: count=33554432 time taken=14.981847ms method: count=33554432 time taken=176.977503ms reflect: count=33554432 time taken=383.905004ms On Thursday, February 2, 2017 at 4:25:05 PM UTC+8, T L wrote: > > > > On Thursday, February 2, 2017 at 2:04:23 PM UTC+8, ChrisLu wrote: >> >> Go's type assertion seems quite slow. The added cost is too much if it >> has to be in a tight loop. Here are the time taken on my laptop for the >> following code. >> >> https://play.golang.org/p/cA96miTkx_ >> >> >> chris$ time ./p >> count=1073741824 time taken=7.899207181s >> count=1073741824 time taken=300.601453ms >> >> real 0m8.205s >> user 0m8.163s >> sys 0m0.029s >> >> chris$ time luajit -e "count = 0 >> > for i=1, 1024*1024*1024, 1 do count = count + 1 end >> > print(count)" >> 1073741824 >> >> real 0m0.900s >> user 0m0.891s >> sys 0m0.005s >> >> >> > Type assertion is even slower than call dynamic method: > https://play.golang.org/p/jUrazcbB9h > Some surprised. > > -- 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. For more options, visit https://groups.google.com/d/optout.
