From: Achim Gratz <Stromeko@nexgo.de>
To: cygwin-patches@cygwin.com
Subject: Re: [PATCH] Cygwin: Speed up mkimport
Date: Sat, 28 Nov 2020 17:57:12 +0100 [thread overview]
Message-ID: <87a6v1fmhj.fsf@Rainer.invalid> (raw)
In-Reply-To: <87360ubq7s.fsf@Rainer.invalid> (Achim Gratz's message of "Fri, 27 Nov 2020 19:37:59 +0100")
Achim Gratz writes:
> b) Open up two pipes to an "xargs -P $ncpu/2 L 1 …" and feed in the file
> names.
That actually works, but the speedup is quite modest on my system
(4C/8T) even though I've allowed it to use unlimited resources. So it
basically forks slower than the runtime for each of the invocations is.
Some more speedup can be had if the assembler is run on actual files in
the same way, but the best I've come up with goes from 93s to 47s and
runs at 150% CPU (up from 85%). Most of that time is spent in system,
so forking and I/O.
Regards,
Achim.
--
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+
Factory and User Sound Singles for Waldorf Blofeld:
http://Synth.Stromeko.net/Downloads.html#WaldorfSounds
next prev parent reply other threads:[~2020-11-28 16:57 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 9:56 Mark Geisert
2020-11-26 10:07 ` Mark Geisert
2020-11-26 20:30 ` Achim Gratz
2020-11-27 9:56 ` Mark Geisert
2020-11-27 18:37 ` Achim Gratz
2020-11-28 2:33 ` Brian Inglis
2020-11-28 16:57 ` Achim Gratz [this message]
2020-11-28 19:31 ` Achim Gratz
2020-12-16 14:29 ` Jon Turney
2020-11-27 10:07 ` Mark Geisert
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