Date: Mon, 24 Oct 2005 10:53:41 -0400 From: Mike Tancsa <mike@sentex.net> To: Robert Watson <rwatson@freebsd.org>, performance@freebsd.org Subject: Re: Call for performance evaluation: net.isr.direct Message-ID: <6.2.3.4.0.20051024104045.05b3df90@64.7.153.2> In-Reply-To: <20051005133730.R87201@fledge.watson.org> References: <20051005133730.R87201@fledge.watson.org>
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At 12:12 PM 05/10/2005, Robert Watson wrote:
>Obviously, this is about two things: performance, and stability. Many of us
...
>Of particular interest is if changing to direct dispatch hurts
>performance in your environment, and understanding why that is.
I enabled this last Monday on 2 SMP boxes in our spam / virus
scanning cluster. Unfortunately, we had to implement some other
changes (local dcc server) that would impact the performance numbers,
but I can report that it is stable after a week. I am going to
disable the setting tonight and go back to
net.isr.direct=0 to get a day or two worth of stats to see what that
does to the average message processing time and overall load
average. But it does seem stable. The 2 boxes are dual core
machines (Intel D830 and AMD 3800 X2) running 6.0RC1 from last week.
---Mike
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