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


From: Rob Browning
Subject: Re: Unexpectedly low read/write performance of open-pipe
Date: Sun, 07 Apr 2019 13:45:49 -0500

Rob Browning <address@hidden> writes:

> While evaluating guile as a possibility to replace some python code,
> assuming I'm not just doing something wrong, I noticed that open-pipe
> appears to transfer data *much* more slowly than python when OPEN_BOTH is
> specified as opposed to OPEN_READ

Oh, and I should have mentioned the version:

  guile (GNU Guile) 2.2.4
  Packaged by Debian (2.2.4-deb+1-1)

For what it's worth, in an earlier round of testing I also hacked up
open-pipe to let me access the underlying ports and set their buffers to
65k.  That doubled the transfer rate, but of course, it's still fairly
slow.

Thanks
-- 
Rob Browning
rlb @defaultvalue.org and @debian.org
GPG as of 2011-07-10 E6A9 DA3C C9FD 1FF8 C676 D2C4 C0F0 39E9 ED1B 597A
GPG as of 2002-11-03 14DD 432F AE39 534D B592 F9A0 25C8 D377 8C7E 73A4



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