In my arch Linux chroot environment on my nexus 4 a hello world program in racket/base runs in .37 seconds, and strace reports 95% of time spent in read.
So I bet you'll get something in that ballpark after raco setup. On September 14, 2015 7:47:20 PM MDT, Matthew Flatt <mfl...@cs.utah.edu> wrote: >Unfortunately, `raco make` may go wrong if its own implementation is >not compiled. > >You probably want `raco setup` or (equivalently) `racket -l setup`, >which should be fast if it's just a matter of updating file timestamps. > >At Mon, 14 Sep 2015 20:20:39 -0500, Robby Findler wrote: >> If you run "raco make -v cmdline2.rkt" you will see output if .zo >> compilation is happening. >> >> Robby >> >> >> On Mon, Sep 14, 2015 at 8:16 PM, John Carmack <jo...@oculus.com> >wrote: >> > No strace on Android, unfortunately. >> > >> > >> > >> > From: Marc Burns [mailto:m4bu...@uwaterloo.ca] >> > Sent: Monday, September 14, 2015 8:10 PM >> > To: John Carmack >> > Cc: Racket Users >> > Subject: Re: [racket-users] Startup times >> > >> > >> > >> > 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 <m4bu...@uwaterloo.ca> >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 <jo...@oculus.com> 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 racket-users+unsubscr...@googlegroups.com. >> > For more options, visit 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 racket-users+unsubscr...@googlegroups.com. >> > For more options, visit 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 racket-users+unsubscr...@googlegroups.com. >> > For more options, visit 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 racket-users+unsubscr...@googlegroups.com. >> For more options, visit 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 racket-users+unsubscr...@googlegroups.com. >For more options, visit https://groups.google.com/d/optout. -- Sent from my Android device with K-9 Mail. Please excuse my brevity. -- 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 racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
