Re: /dev/random
Hi,
On 01/08/14 18:06, Darac Marjal wrote:
> On Fri, Aug 01, 2014 at 01:50:44AM +0200, Bzzzz wrote:
>> On Thu, 31 Jul 2014 16:41:01 -0700
>> "" <pecondon@mesanetworks.net> wrote:
>>
>>> whatever experience you want to share.
>>
>> use haveged, it feeds /dev/random with a reservoir.
>
> I'd like to chime in that I recently installed haveged myself and have
> seen a massive increase in available entropy.
>
> Haveged, as I understand it basically runs a fairly complex calculation
> (with lots of branches and things) in a loop. Because almost all CPUs
> these days are complex beasts, the time to perform the calculation
> varies with each loop (sometimes because of cache misses, or maybe a
> branch was optimized differently). Haveged monitors the differences in
> these times and populates a random pool based on it. This is then fed in
> to the kernel as another source of entropy.
>
> Haveged is amazingly useful on headless or virtual or appliance
> machines.
Unfortunately, it does not seem to work on OpenVZ boxes.
Jerome
>
>>
>> --
>> Pazns: U don't know about the drawer method?
>> Pazns: U take your schoolbag, empty it in a drawer, close it,
>> hop! clean up done!
>> Zeeln: Yeah but my drawers are all full…
>> Pazns: U don't know about the trash method?
>
>
Reply to: