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Groups > comp.arch.embedded > #25389
| Subject | Re: C# for Embedded ?... |
|---|---|
| Newsgroups | comp.arch.embedded |
| References | <nvi1go$n89$1@gioia.aioe.org> <nvkjvl$14he$1@gioia.aioe.org> |
| From | Tom Gardner <spamjunk@blueyonder.co.uk> |
| Message-ID | <RanTz.290608$EN.471@fx30.am4> (permalink) |
| Organization | virginmedia.com |
| Date | 2016-11-05 15:48 +0000 |
On 05/11/16 12:40, asdf wrote: > In those contexts even C++ (which runs circles around C#/Java > performance wise) would be a suboptimal choice. Surprisingly to those that have a narrow knowledge of computing research and practice, that's wrong. The core problems are that: 1) lack of GC leads many programmers to be more defensive than is necessary in a managed environment. Typically that manifests itself as "unnecessary copies", which is a real problem since memory is usually the bottleneck nowadays. 2) C/C++ can only optimise what it /guesses/ will happen at runtime. HotSpot optimises what /actually/ happens. If you doubt the efficacy of that, consider the results of the 25 year old "Dynamo" results. The TL;DR is take optimised C running on processor X, then instrument what actually happens at runtime by running it inside a emulator of X running on X. Naturally that is slow. Then optimise the binary and run it inside the emulator of X running on X. Sometimes the *emulated* C binary code is *faster* than the *native* C binary. FFI, see http://www.hpl.hp.com/techreports/1999/HPL-1999-78.html N.B. those that are /very/ interested in low predictable latencies use Java. The "high performance trading" mob are perfectly happy to spend $600m on laying their own trans-Atlantic fibreoptic cable, or buying up and using the old microwave links between Chicago and New York. Why? To shave a few *milliseconds* off the round trip time. They also like to cast the trading /algorithms/ and network stack in *hardware*, i.e. FPGAs. If Java was slow, it would be out the door in an instant; instead it is becoming the normal platform.
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C# for Embedded ?... Chris <xxx.syseng.yyy@gfsys.co.uk> - 2016-11-04 13:12 +0000
Re: C# for Embedded ?... Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2016-11-04 15:16 +0200
Re: C# for Embedded ?... Chris <xxx.syseng.yyy@gfsys.co.uk> - 2016-11-04 13:39 +0000
Re: C# for Embedded ?... Jack <jack4747@gmail.com> - 2016-11-04 07:52 -0700
Re: C# for Embedded ?... Luke A. Guest <laguest@archeia.com> - 2016-11-30 12:47 +0000
Re: C# for Embedded ?... Dave Nadler <drn@nadler.com> - 2016-11-04 06:44 -0700
Re: C# for Embedded ?... Chris <xxx.syseng.yyy@gfsys.co.uk> - 2016-11-04 14:30 +0000
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-04 11:54 -0700
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-04 12:10 -0700
Re: C# for Embedded ?... Mike Perkins <spam@spam.com> - 2016-11-06 14:55 +0000
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-06 12:46 -0700
Re: C# for Embedded ?... Mike Perkins <spam@spam.com> - 2016-11-06 20:48 +0000
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-06 14:25 -0700
Re: C# for Embedded ?... kalvin.news@gmail.com - 2016-11-04 12:11 -0700
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-04 15:17 -0700
Re: C# for Embedded ?... Clifford Heath <no.spam@please.net> - 2016-11-05 09:24 +1100
Re: C# for Embedded ?... Niklas Holsti <niklas.holsti@tidorum.invalid> - 2016-11-04 22:38 +0100
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-04 15:12 -0700
Re: C# for Embedded ?... Clifford Heath <no.spam@please.net> - 2016-11-05 09:21 +1100
Re: C# for Embedded ?... Niklas Holsti <niklas.holsti@tidorum.invalid> - 2016-11-05 07:21 +0100
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-04 23:39 -0700
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-04 23:52 -0700
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-05 00:44 -0700
Re: C# for Embedded ?... kalvin.news@gmail.com - 2016-11-05 04:03 -0700
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-05 04:41 -0700
Re: C# for Embedded ?... Niklas Holsti <niklas.holsti@tidorum.invalid> - 2016-11-06 10:03 +0100
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-06 14:32 -0800
Re: C# for Embedded ?... upsidedown@downunder.com - 2016-11-05 15:39 +0200
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-05 11:12 -0700
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-05 11:35 -0700
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-05 11:46 -0700
Re: C# for Embedded ?... Luke A. Guest <laguest@archeia.com> - 2016-11-30 12:47 +0000
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-04 15:37 +0000
Re: C# for Embedded ?... Tim Wescott <tim@seemywebsite.really> - 2016-11-04 11:32 -0500
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-04 18:19 +0000
Re: C# for Embedded ?... George Neuner <gneuner2@comcast.net> - 2016-11-04 12:07 -0400
Re: C# for Embedded ?... David Brown <david.brown@hesbynett.no> - 2016-11-04 17:54 +0100
Re: C# for Embedded ?... Tim Wescott <seemywebsite@myfooter.really> - 2016-11-04 12:54 -0500
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-04 18:36 +0000
Re: C# for Embedded ?... George Neuner <gneuner2@comcast.net> - 2016-11-04 22:00 -0400
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-04 21:02 -0700
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-05 08:45 +0000
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-05 08:38 +0000
Re: C# for Embedded ?... George Neuner <gneuner2@comcast.net> - 2016-11-06 04:50 -0500
Re: C# for Embedded ?... Niklas Holsti <niklas.holsti@tidorum.invalid> - 2016-11-06 19:49 +0200
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-06 19:05 +0000
Re: C# for Embedded ?... Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2016-11-06 19:52 +0100
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-06 11:10 -0800
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-06 22:44 +0000
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-06 19:12 +0000
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-06 11:33 -0800
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-06 22:59 +0000
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-06 15:48 -0800
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-07 07:45 +0000
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-07 00:09 -0800
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-07 09:56 +0000
Re: C# for Embedded ?... Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2016-11-07 18:38 +0100
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-07 19:17 +0000
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-07 21:29 -0800
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-08 08:07 +0000
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-08 01:00 -0800
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-08 10:19 +0000
Re: C# for Embedded ?... John Speth <johnspeth@yahoo.com> - 2016-11-04 10:03 -0700
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-04 12:04 -0700
Re: C# for Embedded ?... Clifford Heath <no.spam@please.net> - 2016-11-05 09:13 +1100
Re: C# for Embedded ?... Ed Prochak <edprochak@gmail.com> - 2016-11-07 11:16 -0800
Re: C# for Embedded ?... Clifford Heath <no.spam@please.net> - 2016-11-08 21:39 +1100
Re: C# for Embedded ?... Ed Prochak <edprochak@gmail.com> - 2016-11-11 15:25 -0800
Re: C# for Embedded ?... kalvin.news@gmail.com - 2016-11-04 11:22 -0700
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-04 18:50 +0000
Re: C# for Embedded ?... kalvin.news@gmail.com - 2016-11-04 11:58 -0700
Re: C# for Embedded ?... kalvin.news@gmail.com - 2016-11-04 12:17 -0700
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-04 12:51 -0700
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-04 23:23 +0000
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-04 17:35 -0700
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-05 09:04 +0000
Re: C# for Embedded ?... Wouter van Ooijen <wouter@voti.nl> - 2016-11-04 22:55 +0100
Re: C# for Embedded ?... Luke A. Guest <laguest@archeia.com> - 2016-11-30 15:55 +0000
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-04 11:48 -0700
Re: C# for Embedded ?... asdf <asdf@nospam.com> - 2016-11-05 12:40 +0000
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-05 15:48 +0000
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-05 11:41 -0700
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-05 20:20 +0000
Re: C# for Embedded ?... Paul Rubin <no.email@nospam.invalid> - 2016-11-05 19:14 -0700
Re: C# for Embedded ?... upsidedown@downunder.com - 2016-11-05 20:15 +0200
Re: C# for Embedded ?... Tom Gardner <spamjunk@blueyonder.co.uk> - 2016-11-05 20:25 +0000
Re: C# for Embedded ?... Don Y <blockedofcourse@foo.invalid> - 2016-11-05 17:15 -0700
Re: C# for Embedded ?... Mike Perkins <spam@spam.com> - 2016-11-05 21:04 +0000
Re: C# for Embedded ?... Chris <xxx.syseng.yyy@gfsys.co.uk> - 2016-11-06 00:31 +0000
Re: C# for Embedded ?... Dave Nadler <drn@nadler.com> - 2016-11-05 18:11 -0700
Re: C# for Embedded ?... Luke A. Guest <laguest@archeia.com> - 2016-11-30 12:43 +0000
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