In article <[EMAIL PROTECTED]>,
Mohit Aron <[EMAIL PROTECTED]> wrote:
> I'd like to tell the BSD community about my paper entitled
> "Soft timers: efficient microsecond software timer support for network
> processing" that's going to appear in SOSP 1999. The abstract for the paper
> is attached below. The gzip'd postcript for the paper can be downloaded from:
> http://www.cs.rice.edu/~aron/papers/soft-timers.ps.gz
This looks like it would be a nice solution to a known problem with
dummynet. From dummynet(4):
dummynet performs its task once per timer tick. The granularity
of operation is thus controlled by the kernel option
options HZ
whose default value (100) means a granularity of 10ms. For an
accurate simulation of high data rates it might be necessary
to reduce the timer granularity to 1ms or less. Consider,
however, that some interfaces using programmed I/O may require
a considerable time to output packets. So, re- ducing the
granularity too much might actually cause ticks to be missed thus
reducing the accuracy of operation.
John
--
John Polstra [EMAIL PROTECTED]
John D. Polstra & Co., Inc. Seattle, Washington USA
"No matter how cynical I get, I just can't keep up." -- Nora Ephron
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