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  1. JDK
  2. JDK-6998583

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

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    • Subcomponent:
    • Resolved In Build:
      b23
    • CPU:
      generic
    • OS:
      linux

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        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

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                • Assignee:
                  coffeys Sean Coffey
                  Reporter:
                  coffeys Sean Coffey
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