On Tue, Dec 13, 2011 at 8:15 AM, RW <rwmailli...@googlemail.com> wrote: > On Mon, 12 Dec 2011 21:51:39 -0500 > Maxim Khitrov wrote: > >> I've read everything I could find on the topic of configuring hfsc >> altq in pf (4.5, FreeBSD 9), but I still have no clear idea of how it >> is actually implemented. I even started looking through the source >> code, but that might take a while. My main questions are: >> >> 1. Difference between 'realtime' and 'linkshare'? > > It's about latency, realtime has priority over non-realtime.
I sort of understand this, but I can't figure out how that would apply to my example: altq on $wan hfsc bandwidth 25Mb queue {one, two} queue one bandwidth 70% hfsc(default, realtime 20%) queue two bandwidth 30% hfsc(realtime 60%) If realtime and linkshare priorities are reversed, what happens as total bandwidth utilization approaches 100%? >> 2. In service curve configuration (m1, d, m2), what is 'd' relative >> to? > > It looks like it's a leaky-bucket algorithm. It's not really relative > to anything except for special cases like a traffic step-function. Can you please clarify what you mean? I'm familiar with the leaky bucket algorithm, but it still doesn't answer what triggers the switch from m1 to m2 and whether it's a per-queue or per-connection setting. >> 3. Are priorities actually used for anything? > > Priority determines which queue is serviced next when more than one is > under its limit. Understood, thanks. - Max _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"