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From: Knute Johnson <nospam@rabbitbrush.frazmtn.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Java 7 vs 8 speed issues on Win7?
Date: Wed, 05 Nov 2014 08:23:31 -0800
Organization: A noiseless patient Spider
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On 11/5/2014 04:36, Roedy Green wrote:
> On Wed, 22 Oct 2014 10:18:19 -0700, Knute Johnson
> <eternal@knutejohnson.com> wrote, quoted or indirectly quoted someone
> who said :
>
>> We had a failure of a computer and the replacement has Win7 on it.  The
>> old computer had XP.  I installed Java 7u71 on the new computer and it
>> performed very poorly.  I replaced the Java 7 with 8u25 and the
>> performance improved considerably.  Anybody have an idea what's up with
>> that?  The original computer had Java 6 but we've made some updates to
>> the program and to use the latest we need 7+.
>
> did any java.exe command line switch defaults change?
>
> I wish there were a switch to get them all dumped for java.exe and
> javac.exe
>

No.  We loaded up a new computer with Win7 and Java 7 and the software 
that had been running under Java 6 ran so slow that we couldn't use it. 
  The new computer was multi-core, more memory and faster but the Java 
code ran so slow we couldn't use it.  Then we install Java 8 and it is 
back to its old self.

Really strange.

knute...