Re: Syscall Interface slowness
Emre Yavuz <[email protected]>
| Newsgroups | gmane.comp.python.pypy |
|---|---|
| Message-ID | <[email protected]> |
Hi Carl, Thank you for informing about the issue link, I’ll be following that. Yes, "writelines" took much more longer time in that case I suppose but I would expect them to be same but it’s good to know that with few tweaks it can actually got faster. I’ll take a look more on other things made the CLI slower and if I find something interesting, I’ll let you know for sure! Best, Emre Yavuz > On 2 May 2021, at 16:06, Carl Friedrich Bolz-Tereick <[email protected]> wrote: > > Ah, I found one problem: your script uses .writelines with a string as > the argument. writelines usually takes an iterator (like a list) but it > will also work with a string argument, and then do: > > for char in s: > w.write(char) > > if I replace the writelines(...) with a .write(...) it becomes much > faster, both on cpython and pypy. > > CF > > On 5/2/21 12:49 AM, Emre Yavuz wrote: >> Hi Carl, >> >> Sorry I couldn’t receive your message (probably something wrong in my >> mail configuration) but I saw the message from digest. >> >> I created self contained program for this example. I am using “writelines” >> >> >> *That’s paste bin link to program:* >> https://pastebin.com/D6auMcwN <https://pastebin.com/D6auMcwN> >> >> *Command line:* >> (devpy) emreyavuz:tmp emreyavuz$ python3 test-writer >> Time has been spend for copying data 28 secs >> (devpy) emreyavuz:tmp emreyavuz$ pypy3 test-writer >> Time has been spend for copying data 118 secs >> >> >> Best, >> Emre Yavuz >> > _______________________________________________ pypy-dev mailing list [email protected] https://mail.python.org/mailman/listinfo/pypy-dev