> Doesn't seem to happen with a exec of "/usr/bin/date" so it is most
likely something wine+Go specific.
Yeah, I did try catting the file and it was fast enough. So you are
probably right.
Whats interesting is if I do it indirectly via shell script (then this is
only 5 times slower not 28): But still too slow. Hell PHP can't be faster
at this than Go.
cat /tmp/test
#!/bin/sh
WINEDEBUG=err-all,fixme-all WINEARCH=win32 /opt/wine-staging/bin/wine
cmd.exe /c help
== go ==
func main() {
now := time.Now()
ctx, cancel := context.WithTimeout(context.Background(),
120*time.Second)
defer cancel()
cmd := exec.CommandContext(ctx, "/tmp/test")
//cmd := exec.CommandContext(ctx, "/opt/wine-staging/bin/wine", "cmd",
"/c", "help")
//cmd.Env = []string{"WINEDEBUG=err-all,fixme-all", "WINEARCH=win32"}
output, err := cmd.CombinedOutput()
if err != nil {
fmt.Println(err)
}
fmt.Println(string(output))
fmt.Println(time.Now().Sub(now))
}
time bin/osexec
real 0m5,256s
user 0m0,015s
sys 0m0,221s
BR,
Miha
On Tuesday, November 19, 2019 at 6:13:23 PM UTC+1, Robert Engels wrote:
>
>
>
>
>
>
>
> -----Original Message-----
> >From: Robert Engels <ren...@ix.netcom.com <javascript:>>
> >Sent: Nov 19, 2019 10:54 AM
> >To: Ian Lance Taylor <ia...@golang.org <javascript:>>,
> miha.v...@gmail.com <javascript:>
> >Cc: golang-nuts <golan...@googlegroups.com <javascript:>>
> >Subject: Re: [go-nuts] ultra slow os.Exec
> >
> >
> >I am guessing - because it is close to 30 secs (which sounds a lot like a
> timeout value) - that there is some problem in hand-off with the file
> descriptors and the descriptor is getting locked, causing some sort of
> timeout.
> >
> >If it was "any exe" I'm sure someone would of reported it before. It
> should be trivial to write a test. I'll be back...
> >
> >
> >
> >
> >-----Original Message-----
> >>From: Ian Lance Taylor <ia...@golang.org <javascript:>>
> >>Sent: Nov 19, 2019 10:28 AM
> >>To: miha.v...@gmail.com <javascript:>
> >>Cc: golang-nuts <golan...@googlegroups.com <javascript:>>
> >>Subject: Re: [go-nuts] ultra slow os.Exec
> >>
> >>On Tue, Nov 19, 2019 at 7:29 AM <miha.v...@gmail.com <javascript:>>
> wrote:
> >>>
> >>> Robert is right, all 3 examples are the same (they execute the same
> command with wine being set up and then teared down again). wine itself is
> not an issue. It's go's exec that does something extremely funny.
> >>
> >>Sorry, I misread the original note. But if I'm reading it correctly
> >>now, I find these results pretty hard to believe. Can anybody else
> >>replicate them?
> >>
> >>Ian
> >>
> >>
> >>> On Tuesday, November 19, 2019 at 4:22:47 PM UTC+1, Robert Engels
> wrote:
> >>>>
> >>>>
> >>>> I think the point the OP is making is that when he runs the command
> from the Linux command line it completes in 2 sec - so the Wine startup
> time should not be the issue.
> >>>>
> >>>>
> >>>> -----Original Message-----
> >>>> >From: Ian Lance Taylor <ia...@golang.org>
> >>>> >Sent: Nov 19, 2019 9:15 AM
> >>>> >To: miha.v...@gmail.com
> >>>> >Cc: golang-nuts <golan...@googlegroups.com>
> >>>> >Subject: Re: [go-nuts] ultra slow os.Exec
> >>>> >
> >>>> >On Tue, Nov 19, 2019 at 6:52 AM <miha.v...@gmail.com> wrote:
> >>>> >>
> >>>> >> I'm running windows cli exe on linux via wine using os.Exec
> command.. this takes 28s to complete.
> >>>> >> If I run the same command via linux cli it takes 2s to complete,
> if I run the same command via php's exec it also takes about 2 seconds to
> complete.
> >>>> >>
> >>>> >> == linux cli ==
> >>>> >>
> >>>> >> time WINEDEBUG=err-all,fixme-all WINEARCH=win32
> /opt/wine-staging/bin/wine cmd.exe /c help
> >>>> >> ....
> >>>> >> real 0m1,366s
> >>>> >> user 0m0,002s
> >>>> >> sys 0m0,225s
> >>>> >>
> >>>> >> == php ==
> >>>> >> cat t.php
> >>>> >> <?php
> >>>> >> $out=array();
> >>>> >>
> >>>> >> exec('WINEDEBUG=err-all,fixme-all WINEARCH=win32
> /opt/wine-staging/bin/wine cmd.exe /c help', $out);
> >>>> >>
> >>>> >> var_dump($out);
> >>>> >>
> >>>> >> .....
> >>>> >>
> >>>> >> real 0m1,427s
> >>>> >> user 0m0,035s
> >>>> >> sys 0m0,216s
> >>>> >>
> >>>> >>
> >>>> >> ==go exec==
> >>>> >>
> >>>> >> func main() {
> >>>> >> now := time.Now()
> >>>> >> ctx, cancel := context.WithTimeout(context.Background(),
> 120*time.Second)
> >>>> >> defer cancel()
> >>>> >> cmd := exec.CommandContext(ctx, "/opt/wine-staging/bin/wine",
> "cmd", "/c", "help")
> >>>> >> cmd.Env = []string{"WINEDEBUG=err-all,fixme-all",
> "WINEARCH=win32"}
> >>>> >> output, err := cmd.CombinedOutput()
> >>>> >> if err != nil {
> >>>> >> fmt.Println(err)
> >>>> >> }
> >>>> >> fmt.Println(string(output))
> >>>> >> fmt.Println(time.Now().Sub(now))
> >>>> >> }
> >>>> >>
> >>>> >> time bin/osexec
> >>>> >>
> >>>> >> real 0m39,915s
> >>>> >> user 0m17,062s
> >>>> >> sys 0m0,195s
> >>>> >>
> >>>> >>
> >>>> >> * I have tried to set stdin and std out directly to the one from
> os (no difference)
> >>>> >> * I have replaced cmd.CombinedOutput with cmd.Run() (no
> difference)
> >>>> >>
> >>>> >> go version
> >>>> >> go version go1.13.3 linux/amd64
> >>>> >> I'm totally clueless on what's going on.
> >>>> >
> >>>> >How long does it take to just run the wine command from the shell?
> >>>> >
> >>>> >My first guess would certainly be that the problem is in wine, not
> in
> >>>> >Go's os/exec package. Starting up a Windows emulator has to take a
> >>>> >certain amount of time.
> >>>> >
> >>>> >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 golan...@googlegroups.com.
> >>>> >To view this discussion on the web visit
> https://groups.google.com/d/msgid/golang-nuts/CAOyqgcXJZy61dX_UetsKY0r%3DNMcoBcE4sCuFZVzvvPme%3DjTTDg%40mail.gmail.com.
>
>
> >>>
> >>> --
> >>> 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 golan...@googlegroups.com <javascript:>.
> >>> To view this discussion on the web visit
> https://groups.google.com/d/msgid/golang-nuts/037e16e2-158a-4cf7-8a5f-8b940d55e64a%40googlegroups.com.
>
>
> >>
> >>--
> >>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 golan...@googlegroups.com <javascript:>.
> >>To view this discussion on the web visit
> https://groups.google.com/d/msgid/golang-nuts/CAOyqgcXR3ADH6J28wmY7vneHVnNRpGf0yia8aAyUdSrB62qwQg%40mail.gmail.com.
>
>
> >
> >--
> >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 golan...@googlegroups.com <javascript:>.
> >To view this discussion on the web visit
> https://groups.google.com/d/msgid/golang-nuts/847534479.3807.1574182478713%40wamui-cheeto.atl.sa.earthlink.net.
>
>
>
> Doesn't seem to happen with a exec of "/usr/bin/date" so it is most likely
> something wine+Go specific.
>
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