similar to: random generators - curiosity

Hi, I've discovered an issue which I don't understand. On a new test install of EL9 I saw this message in the logs: Mar 01 08:09:18 <hostname> pcp-pmie[2870]: Low random number entropy available 15.6%avail at beta.corp.invoca.ch This is on a 64 core "AMD Opteron(tm) Processor 6282 SE" server but I also got the same low entropy on an EL9 KVM guest running on a "AMD

On Fri, Sep 19, 2014 at 11:30 AM, Christopher Covington <cov at codeaurora.org> wrote: > On 09/17/2014 10:50 PM, Andy Lutomirski wrote: >> Hi all- >> >> I would like to standardize on a very simple protocol by which a guest >> OS can obtain an RNG seed early in boot. >> >> The main design requirements are: >> >> - The interface should be

On Fri, Sep 19, 2014 at 11:30 AM, Christopher Covington <cov at codeaurora.org> wrote: > On 09/17/2014 10:50 PM, Andy Lutomirski wrote: >> Hi all- >> >> I would like to standardize on a very simple protocol by which a guest >> OS can obtain an RNG seed early in boot. >> >> The main design requirements are: >> >> - The interface should be

On 29/05/17 15:46, Robert Moskowitz wrote: > > > On 05/28/2017 06:57 PM, Rob Kampen wrote: >> On 28/05/17 23:56, Leon Fauster wrote: >>>> Am 28.05.2017 um 12:16 schrieb Robert Moskowitz <rgm at htt-consult.com>: >>>> >>>> >>>> >>>> On 05/28/2017 04:24 AM, Tony Mountifield wrote: >>>>> In article

On Sun, Jul 24, 2005 at 04:06:02PM +0200, Poul-Henning Kamp wrote: +> In message <20050724135738.GM46538@darkness.comp.waw.pl>, Pawel Jakub Dawidek writes: +> +> >We should probably test entropy quality on boot. +> >I've somewhere userland version of /sys/dev/rndtest/ which implements +> >FIPS140-2 tests for (P)RNGs. We can use put it into rc.d/ and warn users.

Am Freitag, 29. Juli 2016, 10:14:07 CEST schrieb Alex Xu: Hi Alex, > On Fri, 29 Jul 2016 15:12:30 +0200 > > Stephan Mueller <smueller at chronox.de> wrote as excerpted: > > Am Freitag, 29. Juli 2016, 09:03:45 CEST schrieb Alex Xu: > > > In my opinion, assuming I am not doing something terribly wrong, > > > this constitutes a bug in the kernel's

Am Freitag, 29. Juli 2016, 10:14:07 CEST schrieb Alex Xu: Hi Alex, > On Fri, 29 Jul 2016 15:12:30 +0200 > > Stephan Mueller <smueller at chronox.de> wrote as excerpted: > > Am Freitag, 29. Juli 2016, 09:03:45 CEST schrieb Alex Xu: > > > In my opinion, assuming I am not doing something terribly wrong, > > > this constitutes a bug in the kernel's

Hello, In ?set.seed I notice that a seed is created from the system time. Thus if two machines were (hypothetically) running for the same time and R was started simultaneously on both, the would have the same seeds (correct?). I assume reading from /dev/random would be different for both of these machines, so my question is why not use an integer read from /dev/random to create the seed? Would

On 05/28/2017 04:24 AM, Tony Mountifield wrote: > In article <792718e8-f403-1dea-367d-977b157af82c at htt-consult.com>, > Robert Moskowitz <rgm at htt-consult.com> wrote: >> >> On 05/26/2017 08:35 PM, Leon Fauster wrote: >>>> Am 27.05.2017 um 01:09 schrieb Robert Moskowitz <rgm at htt-consult.com>: >>>> >>>> I am use to low

On 05/26/2017 08:35 PM, Leon Fauster wrote: >> Am 27.05.2017 um 01:09 schrieb Robert Moskowitz <rgm at htt-consult.com>: >> >> I am use to low random entropy on my arm boards, not an intel. >> >> On my Lenovo x120e, >> >> cat /proc/sys/kernel/random/entropy_avail >> >> reports 3190 bits of entropy. >> >> On my armv7 with

On Thu, Oct 30, 2014 at 5:21 AM, David Vrabel <david.vrabel at citrix.com> wrote: > On 29/10/14 05:19, Andy Lutomirski wrote: >> CPUID leaf 4F000002H: miscellaneous features >> -------------------------------------------- >> > [...] >> ### CommonHV RNG >> >> If CPUID.4F000002H.EAX is nonzero, then it contains an MSR index used to >> communicate

On Thu, Oct 30, 2014 at 5:21 AM, David Vrabel <david.vrabel at citrix.com> wrote: > On 29/10/14 05:19, Andy Lutomirski wrote: >> CPUID leaf 4F000002H: miscellaneous features >> -------------------------------------------- >> > [...] >> ### CommonHV RNG >> >> If CPUID.4F000002H.EAX is nonzero, then it contains an MSR index used to >> communicate

I am use to low random entropy on my arm boards, not an intel. On my Lenovo x120e, cat /proc/sys/kernel/random/entropy_avail reports 3190 bits of entropy. On my armv7 with Centos7 I would get 130 unless I installed rng-tools and then I get ~1300. SSH into one and it drops back to 30! for a few minutes. Sigh. Anyway on my new Zotac nano ad12 with an AMD E-1800 duo core, I am seeing 180.

> Am 29.05.2017 um 05:46 schrieb Robert Moskowitz <rgm at htt-consult.com>: > > > > On 05/28/2017 06:57 PM, Rob Kampen wrote: >> On 28/05/17 23:56, Leon Fauster wrote: >>>> Am 28.05.2017 um 12:16 schrieb Robert Moskowitz <rgm at htt-consult.com>: >>>> >>>> >>>> >>>> On 05/28/2017 04:24 AM, Tony

On 28/05/17 23:56, Leon Fauster wrote: >> Am 28.05.2017 um 12:16 schrieb Robert Moskowitz <rgm at htt-consult.com>: >> >> >> >> On 05/28/2017 04:24 AM, Tony Mountifield wrote: >>> In article <792718e8-f403-1dea-367d-977b157af82c at htt-consult.com>, >>> Robert Moskowitz <rgm at htt-consult.com> wrote: >>>> On 05/26/2017

This problem came about when I noticed exim, on a domU, holding mail in its queue for days before delivering. After a bit of debugging then I found gnutls was taking ages to calculate its keys. So disabled TLS in exim and works fine. Then I had another xen domU doing exactly the same thing so I did some more digging and came up with this post:

<ripley at stats.ox.ac.uk> wrote: > Hint 2: in the absence of balance, ...., and lme can do that Would it be possible to make aov like wrappers to the various special lm variants allowing for a uniform syntax for anova? aov(resp~f1*f2+Error(S/(f1*f2))) ## uses lm aov.lme(resp~f1*f2+Error(S/(f1*f2))) ## uses lme aov.rlm(resp~f1*f2+Error(S/(f1*f2))) ## uses rlm ... I'd do it, but I

On 04/11/2017 10:20 PM, Daniel Nordlund wrote: > Tirthankar, > > "random number generators" do not produce random numbers. Any given > generator produces a fixed sequence of numbers that appear to meet > various tests of randomness. By picking a seed you enter that sequence > in a particular place and subsequent numbers in the sequence appear to > be unrelated.

> Am 29.05.2017 um 14:41 schrieb Robert Moskowitz <rgm at htt-consult.com>: > > > > On 05/29/2017 06:46 AM, Leon Fauster wrote: >>> Am 29.05.2017 um 05:46 schrieb Robert Moskowitz <rgm at htt-consult.com>: >>> >>> >>> >>> On 05/28/2017 06:57 PM, Rob Kampen wrote: >>>> On 28/05/17 23:56, Leon Fauster wrote:

Am Freitag, 29. Juli 2016, 09:03:45 CEST schrieb Alex Xu: Hi Alex, > On Fri, 29 Jul 2016 12:24:27 +0200 > > Nikos Mavrogiannopoulos <nmav at gnutls.org> wrote: > > On Fri, Jul 29, 2016 at 7:40 AM, Stephan Mueller > > > > <smueller at chronox.de> wrote: > > > And finally, you have a coding error that is very very common but > > > fatal