Yes, using FromDevice would be performance hurt. If you need PollDevice, you may need to stick with 2.6.24 without multi queue for now.
Joonwoo. On Fri, Mar 25, 2011 at 1:17 PM, David Zats <[email protected]> wrote: > But wouldn't we take a large performance hit using FromDevice instead of > PollDevice? > Thanks! > David > > On Mar 25, 2011, at 1:00 PM, Joonwoo Park wrote: > >> Hi David, >> >> As patchess linux doesn't support PollDevice for now, you cannot use >> it with patchless linux. >> So you don't need to patch e1000e driver either and have to use >> FromDevice instead. >> >> Here is a similar post that I did yesterday. >> http://www.mail-archive.com/[email protected]/msg04824.html >> >> Regards, >> Joonwoo. >> >> On Fri, Mar 25, 2011 at 12:36 PM, David Zats <[email protected]> wrote: >>> Hi, >>> We would like to leverage the multiple transmit/receive queues that our >>> Intel 82571EB NIC provides and to use it in polling mode. From what we can >>> tell, the 2.6.24.7 Linux kernel does not support multiple queues. At the >>> same time, if we use a newer kernel in pathless mode, the latest patched >>> driver (e1000e-0.4.1.7) won't compile. Would it be possible to find out the >>> combination of kernel and driver version to use to obtain both benefits? >>> Thanks! >>> David Zats >>> _______________________________________________ >>> click mailing list >>> [email protected] >>> https://amsterdam.lcs.mit.edu/mailman/listinfo/click >>> > > _______________________________________________ click mailing list [email protected] https://amsterdam.lcs.mit.edu/mailman/listinfo/click
