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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, 21 Apr 2019 11:22:03 -0500 |
Mark H Weaver <address@hidden> writes:
> I've attached four patches. Only the first two should be needed for
> what I have described above.
>
> The last two patches will only be of interest if you need suspendable
> I/O. They add suspendable I/O support for custom binary ports, and in
> particular for these OPEN_BOTH pipe ports.
>
> Note that I've not yet done much testing of these patches, besides
> running the Guile test suite.
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
(and most importantly for this series, a much quieter fan...)
And yes, I'd love to see something like this in 2.2 too if it turns out
to be feasible to include it there.
Nice
--
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
- Re: Unexpectedly low read/write performance of open-pipe, (continued)
- Re: Unexpectedly low read/write performance of open-pipe, Mark H Weaver, 2019/04/08
- Re: Unexpectedly low read/write performance of open-pipe, Rob Browning, 2019/04/09
- Re: Unexpectedly low read/write performance of open-pipe, Mark H Weaver, 2019/04/09
- Re: Unexpectedly low read/write performance of open-pipe, Chris Vine, 2019/04/09
- Re: Unexpectedly low read/write performance of open-pipe, Mark H Weaver, 2019/04/09
- Re: Unexpectedly low read/write performance of open-pipe, Chris Vine, 2019/04/09
- Re: Unexpectedly low read/write performance of open-pipe, Mark H Weaver, 2019/04/09
- Re: Unexpectedly low read/write performance of open-pipe, Mark H Weaver, 2019/04/16
- Re: Unexpectedly low read/write performance of open-pipe, Mark H Weaver, 2019/04/09
- Re: Unexpectedly low read/write performance of open-pipe, Mark H Weaver, 2019/04/17
- Re: Unexpectedly low read/write performance of open-pipe,
Rob Browning <=
- Re: Unexpectedly low read/write performance of open-pipe, Arne Babenhauserheide, 2019/04/22
Re: Unexpectedly low read/write performance of open-pipe, tomas, 2019/04/23