RE: [Fwd: SecureRandom performance]

["Sims, Ken" <KSIMS@xxxxxxxxxxxxxxxx>]

Hi Gary -

I'm not aware of any 1.1.8 for the OS/400, but 1.2 is available by PTF.  The
IBM service website is down (AGAIN!), but going back through my old CDs, it
appears that the PTF number is SF55645.  If you install it, afterwards you
should reapply the cume and the Java group PTF.

I think you use a system environment variable to specify which version is to
be the default version.  Someone else will have to give you the details on
that.

Ken


> -----Original Message-----
> From: Gary L Peskin [SMTP:garyp@firstech.com]
> Sent: Thursday, August 31, 2000 16:12
> To:   java400-l@midrange.com
> Subject:      [Fwd: SecureRandom performance]
> 
> Oh, also I forgot to mention that we put the latest CUME on this AM and
> re-IPLd.
> This included the latest SF99067 group PTF for Java.
> 
> Gary
> 
> -------- Original Message --------
> I'm having a terrible problem with SecureRandom.
> 
> The following program:
> 
>    public class Glptest1 {
>      public static void main(String[] argv) {
>        long startTime = System.currentTimeMillis();
>        java.security.SecureRandom.getSeed(20);
>        long endTime = System.currentTimeMillis();
>        System.out.println("Elapsed time = " + (endTime - startTime));
>      }
>    }
> 
> consistently takes 56 - 62 seconds to execute the SecureRandom.getSeed()
> call.  I've checked the PTF Cover Letters and everthing else I could
> think of but don't get a hit.
> 
> (a)  Has anyone else experienced this problem?
> (b)  Can someone try running this on their system and let us know the
> results.
> 
> I'm running on v4r4 with jdk 1.1.7.
> 
> Also, does anyone know if 1.1.8 is available on os/400 v4r4?  If so, how
> do I get it?
> 
> TIA,
> Gary
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