On Sat, 18 Apr 2015, Ketan Kulkarni wrote:
Hi, We have been talking about the bloated buffers mostly on the home routers. The Cisco PIE too has been standardized by docsis meant to be for cable modemsI think we would have similar concerns for switches and routers. (E.g. cat3k switches or Cisco 5760 controllers just to name)
remember that bufferbloat shows up where there is a difference in bandwidth from one side of the router to the other (i.e. a bottleneck)
This is almost always going to happen at the edge of your LAN where you go from your Gig-E (or in a datacenter, possibly 10Gig-E to your WAN link. It can happen at places inside your datacenter, but isn't as likely
I would like to know your views about what you think about it . Are the theories so far and the AQMs (codel and pie) stand true for such devices too?
If they are bottlenecks, yes. If they are not bottlenecks it won't hurt (no queues will build up
What would it take to measure the bloat levels of these devices? Do we still need to use the netperf wrapper to get the characteristics of such devices?
the same approach works. you may need beefier systems to generate sufficient load.
David Lang
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