From: davidsen@tmr.com (bill davidsen)
To: linux-kernel@vger.kernel.org
Subject: Re: [RFC] frandom - fast random generator module
Date: 21 Oct 2003 19:55:32 GMT [thread overview]
Message-ID: <bn42vk$ies$1@gatekeeper.tmr.com> (raw)
In-Reply-To: 3F8E8101.70009@pobox.com
In article <3F8E8101.70009@pobox.com>, Jeff Garzik <jgarzik@pobox.com> wrote:
| Eli Billauer wrote:
| > Besides, it's quite easy to do something wrong with random numbers. By
| > having a good source of random data, I suppose we can spare a lot of
| > people the headache of getting their own user-space application right
| > for the one-off thing they want to do.
|
| This is completely bogus logic. I can use this (incorrect) argument to
| similar push for applications doing bsearch(3) or qsort(3) via a system
| call.
Your argument is correct, but this is data generation rather than
analysis. In doing simulation it's desirable to ensure that multiple
instances of a program don't use the same numbers.
For instance, simulating user load against a server; I want the
simulation of human thinking time to be a number in the range n..m and
not to be the same for all threads. Sure I can get around that, and do,
but I wouldn't mind having a simple source of random bytes which was
quality PRNG and unique.
Again, this is not a case that this is a "must have" feature, just an
opinion that there are benefits to having such a feature which don't
apply to the cases you cited above.
--
bill davidsen <davidsen@tmr.com>
CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.
next prev parent reply other threads:[~2003-10-21 20:05 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-16 8:22 [RFC] frandom - fast random generator module Eli Billauer
2003-10-16 8:36 ` Nick Piggin
2003-10-16 10:20 ` Eli Billauer
2003-10-16 10:48 ` Nick Piggin
2003-10-16 11:29 ` Jeff Garzik
2003-10-16 12:27 ` Eli Billauer
2003-10-16 15:10 ` Jeff Garzik
2003-10-16 16:20 ` Andreas Dilger
2003-10-16 16:31 ` Jeff Garzik
2003-10-16 18:18 ` Andreas Dilger
2003-10-16 18:52 ` Richard B. Johnson
2003-10-16 19:31 ` Matt Mackall
2003-10-16 20:40 ` Andreas Dilger
2003-10-16 21:03 ` David Wagner
2003-10-16 23:17 ` Jeff Garzik
2003-10-16 23:42 ` Andreas Dilger
2003-10-17 0:34 ` David Wagner
2003-10-16 17:45 ` Matt Mackall
2003-10-16 18:38 ` Andreas Dilger
2003-10-16 19:08 ` Matt Mackall
2003-10-16 20:27 ` Andreas Dilger
2003-10-16 20:37 ` Matt Mackall
2003-10-16 17:31 ` Matt Mackall
2003-10-16 23:03 ` Eli Billauer
2003-10-16 23:07 ` Jeff Garzik
2003-10-16 23:13 ` Matt Mackall
2003-10-16 23:35 ` jw schultz
2003-10-21 19:24 ` bill davidsen
2003-10-21 19:55 ` bill davidsen [this message]
2003-10-21 21:21 ` Helge Hafting
2003-10-21 22:18 ` bill davidsen
2003-10-22 1:04 ` H. Peter Anvin
2003-10-21 19:17 ` bill davidsen
2003-10-21 21:00 ` H. Peter Anvin
2003-10-21 22:08 ` bill davidsen
2003-10-22 1:06 ` H. Peter Anvin
2003-10-22 2:56 ` jw schultz
2003-10-22 16:22 ` Kent Borg
2003-10-23 2:46 ` Dale Farnsworth
2003-10-23 3:22 ` Sandy Harris
2003-10-23 14:15 ` Kent Borg
2003-10-24 17:37 ` bill davidsen
2003-10-24 17:54 ` Theodore Ts'o
2003-10-24 20:59 ` David Wagner
2003-10-24 21:33 ` jw schultz
2003-10-22 3:49 ` Sandy Harris
2003-10-16 10:45 ` Ingo Oeser
2003-10-21 19:30 ` bill davidsen
[not found] <HbGf.8rL.1@gated-at.bofh.it>
[not found] ` <HbQ5.ep.27@gated-at.bofh.it>
[not found] ` <Hdyv.2Vd.13@gated-at.bofh.it>
[not found] ` <HeE6.4Cc.1@gated-at.bofh.it>
[not found] ` <HjaT.3nN.7@gated-at.bofh.it>
[not found] ` <Hjkw.3Al.11@gated-at.bofh.it>
2003-10-16 17:46 ` David Mosberger-Tang
2003-10-16 19:28 ` Eli Billauer
2003-10-16 20:42 ` Andreas Dilger
2003-10-21 19:46 ` bill davidsen
2003-10-16 21:30 ` Matt Mackall
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