Re: Determining disk activity per volume
Re: Determining disk activity per volume
- Subject: Re: Determining disk activity per volume
- From: Michael Smith <email@hidden>
- Date: Sat, 7 Oct 2006 01:59:11 -0700
On Oct 6, 2006, at 6:37 PM, Rick Mann wrote:
On Oct 6, 2006, at 16:14 , Thulli wrote:
Option 1. If you are interested only in read and write system
calls and don't want to do polling, take a look at this.
http://developer.apple.com/technotes/tn2005/tn2127.html. You need
to write a kauth hook and user land client process. If the kauth
hook kext could provide a device interface, then the user land
client can block on a "read(/dev/yourKauthDevice)" and process
what you read with no polling.
Oooh! This might work very well.
No, it will work very badly. Please look at the iostat code I
referenced yesterday. If you don't follow my advice, please at least
let us know the name of your product so that I can avoid it like the
plague.
= Mike
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