On Thu, 2014-10-16 at 10:19 -0400, Josh Boyer wrote: > On Wed, Oct 15, 2014 at 9:02 PM, Matthew Miller > <mattdm@xxxxxxxxxxxxxxxxx> wrote: > > Reading https://lwn.net/Articles/616241/, getting myself in happily over my > > level of actual knowledge about the state of things. > > > > From that article, it seems like it might be worth trying > > net.core.default_qdisc = fq_codel by default. Just tossing this out there > > for the consideration of someone who really knows what they're talking about > > in this area. > > I think the answer, as usual, is: "It depends." It's not a silver > bullet for all problems, but it would probably help in some cases. I > would actually think Server could use this more than Workstation, as > the article points out that wireless networking has a number of other > issues to consider. I've added Neil on CC, who's probably much more > equipped to weigh in on this than either of us. I'll weigh-in here -- while fq_codel is not an ideal solution for wireless (particularly .11n and .11ac) networks, IMHO it will be better than the existing defaults for most users. While there might be some limited effects on throughput, the improvements in latency will be generally worthwhile. YMMV, of course. > In any case, if this change is done it should be done in the > initscripts package. It's a runtime tunable and we don't need to be > patching the kernel to change the default. Agreed, of course. The runtime tunability also provides an escape hatch for anyone that is negatively impacted by this change of the default qdisc. I support the propose change to use the fq_codel default. John -- John W. Linville Hope is a good breakfast, but it is a linville@xxxxxxxxxx bad supper. -- Sir Francis Bacon _______________________________________________ kernel mailing list kernel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/kernel
