Here’s the result of `strace -c -f -- racket -l racket/base` for Racket 6.1.1.8 on my Linux workstation:
% time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 99.08 0.004000 571 7 nanosleep 0.92 0.000037 0 236 read 0.00 0.000000 0 103 23 open 0.00 0.000000 0 79 close … Does it look similar on the Note 4? > On Sep 14, 2015, at 9:00 PM, Marc Burns <[email protected]> wrote: > > Set the environment variable PLTSTDERR=debug to get more verbose output. > > Startup involves traversing all the bytecode files that comprise the base > environment. How fast is filesystem access on the Note 4 compared to PC? You > could use strace to find the latency on different system calls made during > startup. > >> On Sep 14, 2015, at 8:55 PM, John Carmack <[email protected] >> <mailto:[email protected]>> wrote: >> >> I am experimenting with running racket natively on Android to compare with >> my current embedded Chibi scheme implementation. It would be convenient to >> just leave racket as a separate process and communicate over sockets/pipes >> so it exactly mimics my remote development case. >> >> The startup time to run a trivial console program is very long. A one line >> program with #lang racket/base takes over seven seconds: >> >> root@trlte:/mnt/shell/emulated/0/Oculus/racket/bin # time ./racket >> cmdline2.rkt >> cmdline2.rkt >> < >> line 1 >> line 2 >> line 3 >> line 4 >> line 5 >> line 6 >> line 7 >> line 8 >> line 9 >> 0m7.96s real 0m7.04s user 0m0.65s system >> >> My first test, which still had the default #lang racket, took almost a >> minute to start: >> >> root@trlte:/mnt/shell/emulated/0/Oculus/racket/bin # time ./racket >> cmdline.rkt >> cmdline.rkt >> < >> line 1 >> line 2 >> line 3 >> line 4 >> line 5 >> line 6 >> line 7 >> line 8 >> line 9 >> 0m54.16s real 0m48.68s user 0m4.83s system >> >> On a PC, it only takes a fraction of a second. This was on a Note 4, which >> should not be 100x slower than a PC. Could it not be using the compiled >> library bytecode somehow? I didn’t see any command line options for verbose >> output on startup, is there any way to force some extra information? >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Racket Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] >> <mailto:[email protected]>. >> For more options, visit https://groups.google.com/d/optout >> <https://groups.google.com/d/optout>. > > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
