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Re: Use of Dual Core causes random failures building OpenJDK

On 11/19/09, Larry Hall (Cygwin) <> wrote:
> On 11/19/2009 10:49 PM, Pete Brunet wrote:
>> ---
>> Pete Brunet wrote:
>>> I've been trying to build OpenJDK for several weeks now and have never
>>> been able to get to the end of the build because of random failures.
>>> Last night I had a hunch to turn off one of the cores in BIOS and after
>>> doing that the problems have gone away.  My system is a Lenovo T500,
>>> Model 2081-CTO, with an Intel Core2 Duo P8700 at 2.53 GHz and 2 GB of
>>> RAM running XP Pro SP3.  The latest updates have been applied to the
>>> Lenovo system and to XP.  Some examples of failures:
>>> - empty environment variables
>>> - invalid environment variables
>>> - files not found (possibly related to corrupted environment variables)
>> This problem went away by disabling Norton 360.
IIRC, and my memory may not be correct, I had a problem with
corrupt/nonsense env variables while trying to setup an XP
laptop- I had a lot of junk to install and so I was starting multiple
installs to run at the same time. I can't remember if cygwin was
involved but when I stopped doing
more than one install at a time the problem went away. I'd guess that there
is something in the env update code that isn't thread safe. Disabling
the AV may have just changed timing, removing a core could have serialized
some things.

> Wow!  I had a hunch that BLODA could be the cause of the file related
> problems
> but it never occurred to me that it could be screwing up environment
> variables too.

Anyone care to determine if env updates are not thread safe?

> Norton is really bad news...
> --
> Larry Hall                    
> RFK Partners, Inc.                      (508) 893-9779 - RFK Office
> 216 Dalton Rd.                          (508) 893-9889 - FAX
> Holliston, MA 01746
> _____________________________________________________________________
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>  >> A: Because it reverses the logical flow of conversation.
>  >>> Q: Why is top posting annoying in email?
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