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Re: Unexpectedly low read/write performance of open-pipe


From: Arne Babenhauserheide
Subject: Re: Unexpectedly low read/write performance of open-pipe
Date: Mon, 22 Apr 2019 20:39:03 +0200
User-agent: mu4e 1.2.0; emacs 26.1

Rob Browning <address@hidden> writes:
>> For something similar to the original python code and roughly similar to
>> open-pipe OPEN_BOTH (see code below) I see:
>>   mb/s: 1713.26754296

> Here for "guile -s io-perf.scm > /dev/null" I see:
>
>   2.2.4:                  1.39 mb/s  >100% CPU in top
>   your first proposal: 1453.49 mb/s  >300% CPU in top
>   this series:         3937.01 mb/s   <80% CPU in top

Is this still on the same machine? If yes, then it would show a more
than 2x speedup cmpared to Python!

Best wishes,
Arne
--
Unpolitisch sein
hei├čt politisch sein
ohne es zu merken

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