DualCores and Current Cygwin problems

Linda Walsh cygwin@tlinx.org
Fri May 18 09:10:00 GMT 2007

Joseph Kowalski wrote:
> Linda Walsh <cygwin at tlinx dot org> wrote:
>> Hi, I don't claim to know what is going on, but I'm
>> using a dual-core system and haven't noticed the problems you are having,
>> but my processors are Intel Dual Core.  That shouldn't make a difference
>> I wouldn't think.
>> Joseph Kowalski wrote:
>> 1) Windows XP, fully updated;   2) Visual Studio .NET Professional (2003)
>> 3) Microsoft Platform SDK (2004 - *not* R2)
>> 4) Microsoft DirectX SDK (Summer 2004);   5) Sun Java 6 SDK (1.6.0_01)
>> 6) Cygwin (current).  That's it.  No additional software components.  
>> None.
>> ----
>>     What do you mean by "components"?  Do you mean if you go into
>> the "Add/Remove Programs", the only items I would see would be the MS 
>> SDK,
>> XP "Patches", DirectX SDK, and Sun Java?  If you tell it to hide 
>> "updates",
>> I'd guess you only have 3 items on your Software list?  the 
>> MS-Platform SDK,
>> the DirectX SDK and the Sun Java SDK?  (Cygwin wouldn't be listed).
>>     That's a pretty short list, but I assume it is a test machine
>> that's off the main net and is only for testing?
> Well, it depends upon how you look at it.  Its probably best viewed
> as a build machine for building the Sun Java SDK, with emphasis
> on OpenJDK.  Its a test machine in the sense that I'm starting with
> a bare machine to "test" the instructions for setting up a build
> environment for the JavaSDK.
> That's why its a short list.  The goal is for it to be the minimal list to
> build with.
> I'm 2500 miles from this machine at the moment, so I'm not exactly
> sure what you would see in add/remove programs.  I suspect your list
> is correct, but you'ld also see Virtual Studio (which you probably missed
> due to the missing <CR> above).
	"At the moment?"   How are you logging into the machine if you
are 2500 miles away?  Is it on the net?  Yet you have no firewall other
than XP's builtin, and no other security software?  Could it be possible
the machine has been hacked?

> No, I haven't tried this, and I'm not sure exactly how I would do this.
	When I do it interactively at console, I run process explorer (a GUI).
Hey, just noticed, it's in the task manager too, on the processes page, rightclick
and make sure only 1 cpu is checked on your "parent" process -- i.e. if you run from
'bash', setting the affinity on bash will also propagate it to the children.

	In the response after yours, by Oliver Walsh, he mentions another tool
that modifies "exe"s to limit them to a particular cpu -- that's another possibility.

> I am down rev. (one rev.) from the current BIOS provided by ASUS,
> but the newer rev only claims to expand CPU support.
	Could that provide better support for multi-core cpu's?  Dunno.
>>     But maybe making sure you have latest drivers from manufacturers
>> even though they may not be coming with your standard WinXP install would
>> help?
> I can check the rev. on the nVidia site, and if newer, will update and
> report back.
>> Linda
> That all said, there are a lot of threads here recently reporting this
> failure symptom.  Some of the reports tend to indicate that the problem
> only appeared when Cygwin was updated (then again, how many of us
> visit Windows Update and forget to mention that). I tend not to think
> its a chip driver revision problem.
Urg...I usually remember visits to win-update...they are usually painful.
Takes hours for them to download as is constantly trying to go around my
proxy and go direct with each file -- after taking forever and timing out on
several servers it eventually gives up and downloads it through the proxy,
but it slows down each file download to a few to several minutes...

Seems to be a new feature with SP2....didn't have the problem in SP1 for some
reason, but MS mucked heavily with SP2's network stack and messed up more than
one network related program.


Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

More information about the Cygwin mailing list