Subject: Re: Throttling IO Requests in NetBSD via Congestion Control
To: Sumantra Kundu <>
From: Steven M. Bellovin <>
List: tech-kern
Date: 08/21/2006 15:28:40
I don't have an explanation for your results (though I wonder if
metadata-related reads are part of the explanation), but I have serious
qualms about making processes sleep.  In the limiting case, that sets
an upper bound on output rate, regardless of other demand.  Have you
explored lowering scheduling priority instead?  That would allow other
processes (which would generate read requests) to make more requeasts.