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Author Topic: "Disk activity" tamer...  (Read 3627 times)

cettolox

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"Disk activity" tamer...
« on: September 17, 2007, 03:29 PM »
Hi,

I "love" process tamer, I can't live without !!!

But how I'd like a hard disk tamer ... ! If an application starts to use too much CPU it gets tamed... but how to deal with applications that start to heavily work with the hard drive, slowing down the system to a crawl and consuming little more than 0% CPU???

/Stef

yksyks

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Re: "Disk activity" tamer...
« Reply #1 on: September 17, 2007, 03:34 PM »
My vote for this again...  ;) (http://www.donationc...dex.php?topic=6803.0)

Armando

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Re: "Disk activity" tamer...
« Reply #2 on: September 17, 2007, 03:35 PM »

It's good you mention that. You're actually not the first! See :
http://www.donationc...47.msg71111#msg71111
http://www.donationc...dex.php?topic=6803.0

[edit : oups! yksyks posted at the same time!)

cettolox

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Re: "Disk activity" tamer...
« Reply #3 on: September 17, 2007, 03:39 PM »
Opps, sorry, I admit it, I did not search before...

/Stef

MrCrispy

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Re: "Disk activity" tamer...
« Reply #4 on: September 17, 2007, 04:04 PM »
I am not aware of any mechanism to throttle disk IO in the Windows API. The most you can do is control IO using DPC's but once an IO request has been dispatched, it will run to completion unless its preempted by a higher priority request such as that coming from an ISR, which are not controllable from user mode.

Its impossible to timeslice away from an existing disk operation in the same way that can be done for threads on a cpu, the reason being that file IO has no notion of state which can be saved (like cpu registers).



« Last Edit: September 17, 2007, 06:53 PM by MrCrispy »

yksyks

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Re: "Disk activity" tamer...
« Reply #5 on: September 17, 2007, 05:21 PM »
That's what I was afraid of...  :(