NativeSeedGenerator is making 8192 byte read requests from entropy pool on each init.

A simple testcase shows that we read a minimum of 8192 bytes from entropy pool each time we call generateSeed on the solaris/unix NativeSeedGenerator.
Added 6u23-waive-approve keyword, since it's not a stopper for 6u23. Here is the email thread about this issue:

It is too late for 6u23, which is targeted to ship in 3 weeks. Once we have a fix, we can consider if it is too risky for 6u24.

jeannette

On Nov 11, 2010, at 4:46 AM, Mike Schoen wrote:

> This particular bug was not raised by Exalogic. We had the same entropy issue but resolved the problem by adding network activity as an entropy source in the EL kernel.
>
> This specific instance of the problem was raised by fusion apps provisioning. I have also seen the EM team raise the issue on several occasions in the context of running tests in the farm.
>
> In any case I don't think we can push a resolution to May and we will need this resolved in both HS and JRockit.
>
> On Nov 10, 2010, at 10:08 PM, Roger Calnan <###@###.###> wrote:
>
>> I'd agree that this isn't a stopper for 6u23 or PS3. my understanding is that it is Exalogic that is having
>> the problem and will need an update to JRockit rather than Java SE. We should get the fix into Java SE with
>> the fix going out via 6u25 (May), we can provide an earlier Java SE release as necessary for the JavaSE based
>> Exalogic release of FMW apps.
>>
>> Roger
>>
>>
>> Begin forwarded message:
>>
>>> From: Mike Schoen <###@###.###>
>>> Date: 11 November 2010 03:28:42 CET
>>> To: ###@###.###
>>> Cc: Tracy Barbaro <###@###.###>, Jeannette Hung <###@###.###>, Seán Coffey <###@###.###>, Ranjit Lingaiah <###@###.###>, ###@###.###, Calnan Roger <###@###.###>, Naggi Asmar <###@###.###>, Mike Schoen <###@###.###>
>>> Subject: Re: P1 6998583 - stopper for 6u23 ?
>>>
>>> This is not a stopper for the FMW 11gR1 PS3 release. This problem has been around for a while and I doubt that we would slip PS3 to accommodate picking up a new JDK at this stage.
>>>
>>> However, the problem is starting to surface more and more regularly in various environments. If the root cause is in the JDK we will most likely want a fix ASAP and it may be considered a stopper for the fusion Apps release. Assuming you have a fix in hand I have a few questions:
>>>
>>> 1) What is the impact to 6u23 if you take this fix (i.e. is there a slip, how much, are there customers waiting for the original date, etc.)?
>>>
>>> 2) If this fix does not make 6u23 what and when is the next delivery vehicle for this fix?
>>>
>>> Copying Naggi so he can weigh in on this also.
>>>
>>> MJS