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RE: Re: Dual core

From: Young, Jason \(GE Indust, GE Fanuc\) <Jason.Young_at_ge.com>
Date: 2006-03-07 17:47:23 CET

I thought we were talking about Microsoft Windows?

Sorry, I couldn't help myself.

-----Original Message-----
From: Stefan Küng [mailto:tortoisesvn@gmail.com]
Sent: Tuesday, March 07, 2006 10:26 AM
To: users@tortoisesvn.tigris.org
Subject: Re: Dual core

Oblio wrote:
>
>> There is absolutely *no* way a program in userspace can do that. Only
>> drivers can lock a system that hard.
>
> I'm not so sure - I've had occasions where software has done that. So
> much CPU is consumed that the OS never gets around to redrawing the
> screen. There are brief windows where other programs can execution,
> or at least be added to the queue. Particularly painful on a server.

A normal user program can't do that. A service can do it under some special circumstances, but never a normal user program. The system will always provide enough CPU resources to every user program equally. Even if a program uses 100% CPU (the task manager showing that), other programs still get their share of CPU time.
If not even the task manager can be shown, something must be seriously wrong, something a normal user program simply can't do.
Of course, if a user program triggers a bug in a driver (we had some time ago an issue where also TSVN seemed to be the reason for a serious system block - but it turned out to be a buggy video driver).

Stefan

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Received on Tue Mar 7 17:49:35 2006

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