On Sun, 12 Jul 2020 11:40:01 +1000 Russell Strong <russ...@strong.id.au> wrote:
> On Wed, 8 Jul 2020 23:26:34 -0700 > Stephen Hemminger <step...@networkplumber.org> wrote: > > > On Thu, 9 Jul 2020 16:10:34 +1000 > > Russell Strong <russ...@strong.id.au> wrote: > > > > > Hi, > > > > > > I'm attempting to fill a link with background traffic that is sent > > > whenever the link is idle. To do this I've creates a qdisc that > > > will repeat the last packet in the queue for a defined number of > > > times (possibly infinite in the future). I am able to control the > > > contents of the fill traffic by sending the occasional packet > > > through this qdisc. > > > > > > This is works as the root qdisc and below a TBF. When I try it as a > > > leaf of HTB unexpected behaviour ensues. I suspect my approach is > > > violating some rules for qdiscs? Any help/ideas/pointers would be > > > appreciated. > > > > Netem can already do things like this. Why not add to that > > > > Hi, > > Tried doing this within netem as follows; but run into similar > problems. Works as the root qdisc (except for "Route cache is full: > consider increasing sysctl net.ipv[4|6].route.max_size.") but not under > htb. I am attempting to duplicate at dequeue, rather than enqueue to > get an infinite stream of packets rather than a fixed number of > duplicates. Is this possible? > > Thanks > Russell HTB expects any thing under it to be work conserving.
