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From: Ken Brownfield <brownfld@irridia.com>
To: linux-kernel@vger.kernel.org
Subject: Re: Continuing /dev/random problems with 2.4
Date: Fri, 1 Feb 2002 13:38:33 -0600	[thread overview]
Message-ID: <20020201133833.B8599@asooo.flowerfire.com> (raw)
In-Reply-To: <20020201031744.A32127@asooo.flowerfire.com> <1012582401.813.1.camel@phantasy> <a3enf3$93p$1@cesium.transmeta.com>
In-Reply-To: <a3enf3$93p$1@cesium.transmeta.com>; from hpa@zytor.com on Fri, Feb 01, 2002 at 10:40:35AM -0800

On Fri, Feb 01, 2002 at 10:40:35AM -0800, H. Peter Anvin wrote:
[...]
| > Exhausting entropy to zero under high use is not uncommon (that is a
| > motivation for my netdev-random patch).  What boggles me is why it does
| > not regenerate?
[...]
| Anything that is meant to be a server really pretty much needs an
| enthropy generator these days.  We really should push vendors to
| provide it (together with serial console firmware and other "well,
| duh" things rackmount servers should have as a matter of course.)

Yes, in fact we do have entropy generators in some cases, especially on
Solaris.  I think this is a very good idea -- it would be extremely nice
to see this especially since SO much more is dependent upon entropy
these days.  More than about 7 years ago I would have thought entropy
was a nethack clone.

Of course, in my case deleting the /dev/random character node still
doesn't allow entropy to drain in (after at least a month) so I suspect
the kernel's entropy generation would be sufficient if it didn't
artificially stall or drain from within the kernel.

Thanks much,
-- 
Ken.
brownfld@irridia.com


| 
| 	-hpa
| -- 
| <hpa@transmeta.com> at work, <hpa@zytor.com> in private!
| "Unix gives you enough rope to shoot yourself in the foot."
| http://www.zytor.com/~hpa/puzzle.txt	<amsp@zytor.com>
| -
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  reply	other threads:[~2002-02-01 19:39 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-02-01  9:17 Continuing /dev/random problems with 2.4 Ken Brownfield
2002-02-01 16:36 ` Andreas Dilger
2002-02-01 17:00   ` Ken Brownfield
2002-02-01 16:53 ` Robert Love
2002-02-01 17:01   ` Ken Brownfield
2002-02-04  9:28     ` Sean Hunter
2002-02-01 18:40   ` H. Peter Anvin
2002-02-01 19:38     ` Ken Brownfield [this message]
2002-02-01 19:50       ` Robert Love
2002-02-01 19:52         ` Ken Brownfield
2002-02-01 19:57       ` Andreas Dilger
2002-02-01 20:22         ` Ken Brownfield
2002-02-01 19:43     ` Andreas Dilger
2002-02-01 20:12       ` H. Peter Anvin
2002-02-01 20:28         ` Jeff Garzik
2002-02-02  1:33           ` David Wagner
2002-02-02  8:01             ` Jeff Garzik
2002-02-02  8:54           ` Kai Henningsen
2002-02-02 11:13             ` Andreas Dilger
2002-02-04 22:13         ` Bill Davidsen
2002-02-04 22:37           ` Roland Dreier
2002-02-04 22:45             ` Robert Love
2002-02-05 23:02               ` Bill Davidsen
2002-02-05 23:17                 ` Robert Love
2002-02-06 16:16                   ` Bill Davidsen
2002-02-06 16:31                     ` Need a clew WRT fig2dev Kirk Reiser
2002-02-06 16:42                       ` Adrian Bunk
2002-02-06 20:40                       ` Jeff Garzik
2002-02-09 19:45                     ` Continuing /dev/random problems with 2.4 Nix N. Nix
2002-02-03 12:51       ` Henning P. Schmiedehausen
2002-02-01 20:23     ` Peter Monta
2002-02-01 20:27       ` H. Peter Anvin
2002-02-01 20:36         ` Jeff Garzik
2002-02-01 20:33       ` Jeff Garzik
2002-02-01 20:40         ` H. Peter Anvin
2002-02-01 20:54           ` Jeff Garzik
2002-02-01 20:56         ` Peter Monta
2002-02-01 22:54           ` H. Peter Anvin
2002-02-01 23:27             ` Peter Monta
2002-02-02  1:50               ` H. Peter Anvin
2002-02-02  2:05       ` David Wagner
2002-02-02  3:30         ` Peter Monta
2002-02-02 21:02         ` Martin Dalecki
  -- strict thread matches above, loose matches on Subject: below --
2002-02-04 21:53 Ishan O. Jayawardena

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