Mersenne DigestTuesday, March 27 2001Volume 01 : Number 833
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Date: Sun, 25 Mar 2001 02:08:59 -0800
From: "John R Pierce" [EMAIL PROTECTED]
Subject: Re: Mersenne: Getting new GIMPSers
Hmm ... my comp has NO idle time anymore (8
even with prime95 running 24/7 on my Windows2000 system, it seems to come up
with a FEW idle cycles. I figure its when prime95 gets paged out or
something. I rebooted a couple of hours ago after photoshop blew up and
left the system kinda crispy, in the past 2h 48m, I show 3 minutes of idle
time has accumulated. 2:43 has gone to prime95. the rest to everything
else i've done (hardly none to a number of edit windows, web browsers, etc).
- -jrp
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Date: Sun, 25 Mar 2001 11:11:07 -
From: "Brian J. Beesley" [EMAIL PROTECTED]
Subject: Re: Mersenne: Getting new GIMPSers
On 25 Mar 2001, at 2:08, John R Pierce wrote:
Hmm ... my comp has NO idle time anymore (8
even with prime95 running 24/7 on my Windows2000 system, it seems to
come up with a FEW idle cycles.
Yes, to enable low-priority tasks to respond to events (mouse clicks
etc) the scheduler makes sure every process - even the null process -
gets a few cycles every so often. If you have a "normal" number of
processes running you will probably have only about 99% of the actual
processor cycles available to _all_ user processes. What is "normal?"
Well, the task manager on my Win2K system shows 28 processes when all
applications are shut.
EèÛ®§ç¬
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Date: Sun, 25 Mar 2001 10:03:01 -0500
From: Pierre Abbat [EMAIL PROTECTED]
Subject: Re: Mersenne: Getting new GIMPSers
On Sun, 25 Mar 2001, John R Pierce wrote:
Hmm ... my comp has NO idle time anymore (8
even with prime95 running 24/7 on my Windows2000 system, it seems to come up
with a FEW idle cycles. I figure its when prime95 gets paged out or
something. I rebooted a couple of hours ago after photoshop blew up and
left the system kinda crispy, in the past 2h 48m, I show 3 minutes of idle
time has accumulated. 2:43 has gone to prime95. the rest to everything
else i've done (hardly none to a number of edit windows, web browsers, etc).
How does idle time accrue *to a process*? Idle time is when the CPU is not
executing any process.
phma
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Date: Sun, 25 Mar 2001 19:09:02 +0200
From: "Steinar H. Gunderson" [EMAIL PROTECTED]
Subject: Mersenne: Re: Getting new GIMPSers
On Sun, Mar 25, 2001 at 10:03:01AM -0500, Pierre Abbat wrote:
How does idle time accrue *to a process*? Idle time is when the CPU is not
executing any process.
Just like the brain, your computer can not `do nothing'. `Idle' time would
most likely be spent in some sort of loop, possibly a HLT loop, keeping
your CPU cool :-)
/* Steinar */
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Date: Sun, 25 Mar 2001 15:48:28 -0500
From: Jeff Woods [EMAIL PROTECTED]
Subject: Re: Mersenne: Getting new GIMPSers
At 10:03 AM 3/25/01 -0500, you wrote:
even with prime95 running 24/7 on my Windows2000 system, it seems to come up
with a FEW idle cycles. I figure its when prime95 gets paged out or
How does idle time accrue *to a process*? Idle time is when the CPU is not
executing any process.
On a Win32 system, the idle time is kept track of by the idle PROCESS (a
thread or task operating autonomously, for you *n*x types). It is by
hooking into and pseudo-taking over this process that Prime95 does its work.
Win32 tracks ALL processes by (I think) 32 different "priority" levels,
broken into two different tiers (with only five basic priority levels from
low, midium low, etc, to high).The Idle Process is but one more process
running next to the Kernel, GDI, and other messaging and system processes
as well as user applications.
It *will* get the occasional cycle, lest it never be accessed at all, even
when Prime95 is running.
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