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To: freebsd-current@freebsd.org
From: "R. Tyler Ballance" <tyler@tamu.edu>
Date: Sat, 13 Aug 2005 17:34:41 -0500
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Subject: Disk I/O and Peripheral I/O in 6.0-BETA
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Howdy, I'm using a source build of 6.0-BETA2 (built over 5.4-STABLE)  
and I'm still experiencing something I either never experienced, or  
never noticed on RELENG_5.

Whenever I have huge disk related processes running, `rm -rf src obj  
ports` for example, almost all other forms of I/O suffer. The USB  
mouse that I use starts to lag terribly, USB flash drive transfers  
slow tremendously, etc.

How are these two different sets of I/O causing interference with one  
another? Is this a result of me running a uniprocessor board? (given  
the SMPng enhancements?)

Is this just something I'm going to have to cope with, or is there  
some other way I can give USB I/O higher priority?

Cheers,

-R. Tyler Ballance