Howdie, I seem to be getting "edge cases" this week :-)
A client of mine wanted "extreme I/O performance" out of a full-duplex Gigbit interface. Specifically he asked about intel I/OAT and IRQ Swizzling. I had to look those up: http://www.intel.com/technology/ioacceleration/ seems like it's a TCP Offloader built into the Woodcrest CPUs. found lots of whitepaprers, but not a word about how to turn it on. http://fireverse.org/?p=55 http://download.intel.com/design/chipsets/applnots/31433702.pdf Swizzling, if I got it right, is a BIOS switch to enable Intel chipset 5000 series to let me see each NIS on a different IRQ so I can do affinity balancing (otherwise all NICs are on the same IRQ). this doesn't seem to do any good for a single NIC though. Anyone knows about either? I refered the client to GBY, being a kernel hacker unlike myself, but he also never heard of either technology. All I could find by Googling were lots of white papers, but no howto, except for that fireverse.org link about it being supported in CP SPLAT. Also, I never looked into "Zero Copy". I know it's a cool feature supported only in some NIC drivers. Is it something that needs toying with or is it turned on by default when I use the driver? Thanks in advance, Ira. -- Your hetero life mate Ira Abramov http://ira.abramov.org/email/ ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
