Messages in this thread | | | Date | Mon, 24 Apr 2006 17:48:41 -0600 | From | Robert Hancock <> | Subject | Re: Van Jacobson's net channels and real-time |
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linux-os (Dick Johnson) wrote: > Message signaled interrupts are just a kudge to save a trace on a > PC board (read make junk cheaper still). They are not faster and > may even be slower.
Save a trace on the PC board? How about no, since the devices still need to support INTX interrupts anyway. And yes, they can be faster, mainly because being an in-band signal it simplifies some PCI posting related issues, and there is no need to worry about sharing.
> They will not be the salvation of any interrupt > latency problems. The solutions for increasing networking speed, > where the bit-rate on the wire gets close to the bit-rate on the > bus, is to put more and more of the networking code inside the > network board. The CPU get interrupted after most things (like > network handshakes) are complete.
You mean like these?
http://linux-net.osdl.org/index.php/TOE
-- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/
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