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Re: "Please wait, entropy is being gathered"

From: Staffan Tjernstrom <subversion_at_staffan.tjernstrom.name>
Date: Fri, 27 Feb 2009 13:41:21 -0600

Something is calling the random number generator, and yes, it normally uses
things like mouse movement and keystrokes to keep it's random number
"random".

Basically, the random seed buffer is being emptied, and needs feeding.

Try a quick loop looking at /dev/random and/or /dev/urandom and you'll be able
to generate the message pretty quickly.

On Fri, Feb 27, 2009 at 02:17:31PM -0500, Ruslan Sivak wrote:
>omar_zakaria_at_agilent.com wrote:
>> Hey everyone. Has anyone seen this particular message before?
>>
>> "Please wait, entropy is being gathered. Please do some work it would keep you from getting bored, because it will improve the quality of the entropy."
>>
>> I'm seeing it on an HP-UX 10.20 machine running Subversion 1.5.2 from CollabNet, but ONLY as part as our automated update-and-build scripts, which run as a cronjob and without a tty. I can't seem to get the messages to show up under any other circumstances, so I can't recreate it manually, and running the cronjob myself doesn't generate the error. In fact, I only see it in the logs. At the moment, I'm just grepping it out, but I'd like to find the root cause if I can. Anyone know what the root cause might be and how to get rid of it?
>>
>> (As an aside, I'm entertained at the idea of "good quality" entropy. I know what they mean, but it's still a somewhat comical phrase.)
>>
>>
>Sounds like something having to do with using /dev/random which needs a
>source of entropy (and a lot of times will generate it using things like
>keyboard and mouse movements, etc).
>
>Maybe a switch for it to use /dev/urandom will fix it.
>
>Russ
>
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Received on 2009-02-27 20:42:26 CET

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