On Thu, 1 Jan 2015 14:19:08 +1100 teor <teor2345@xxxxxxxxx> wrote: > On 1 Jan 2015, at 07:39 , Greg Troxel <gdt@xxxxxxxxxx> wrote: > > Tor 0.2.6.2-alpha (just in the process of being released) has some > changes to queuing behaviour using the KIST algorithm. > > The KIST algorithm keeps the queues inside tor, and makes > prioritisation decisions from there, rather than writing as much as > possible to the OS TCP queues. I'm not sure how functional it is on > *BSDs, but Nick Mathewson should be able to comment on that. (I've > cc'd tor-dev and Nick.) I don't think we merged that branch yet, since it's not ready for general use. Additionally, it's not currently functional on the *BSDs. The KIST code last I checked only is used under Linux. While the full portability story is in #12890 it looks roughly like: * Linux - Supported. * Windows - Possible, needs code in tor. * Darwin - Possible, uses interfaces marked as undocumented/internal. * FreeBSD - Requires a trivial kernel patch (interface is there, information exposed is incomplete). * Other BSDs - Requires a kernel patch, which is more involved than the FreeBSD one (implementing the required interface vs exposing more information). The patch is still trivial for anyone that's familiar with the TCP/IP code. I don't think we should be in the business of maintaining kernel patches either, so I'm not sure what the right thing to do would be for non-Darwin *BSD. Regards, -- Yawning Angel
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