[Cerowrt-devel] performance numbers from WRT1200AC (Re: Latest build test - new sqm-scripts seem to work; "cake overhead 40" didn't)

[Sebastian Moeller]

Hi Mikael,


On Jun 28, 2015, at 09:06 , Mikael Abrahamsson <swmike at swm.pp.se> wrote:

> On Fri, 26 Jun 2015, Dave Taht wrote:
> 
>> src-git https://github.com/dtaht/ceropackages-3.10.git
>> 
>> ./scripts feeds update
>> ./scripts feeds install kmod-sched-cake tc-adv kmod-sched-fq_pie
>> edit the .config file to make them modules or installed by default
>> make menuconfig then save
>> make
> 
> I have now done this. I have sch_cake, and I have a tc I can add an qdisc "cake" with to for instance eth1 and see stats from it with "tc -s qdisc"
> 
> I however do not have anything "cake" in luci-app-sqm. I see luci-app-sqm in my "cero" feed, but it seems to install luci-app-sqm from regular OpenWrt instead.

	Ah, I see the latest changes have not yet made it into the openwrt repository (due to lack of testing). As I do not have permissions/authority to push changes into the openwrt repository, there is nothing I can do to expedite the process. You could replace /usr/lib/lua/luci/model/cbi/sqm.lua on your router with the following (attached file)
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that should do the trick and get you to the most recent version that needs testers badly. The minimal change required is to add c:value(“cake”) to the following section of sqm.lua:

c = s:taboption("tab_qdisc", ListValue, "qdisc", translate("Queueing discipline"))
c:value("fq_codel", "fq_codel ("..translate("default")..")")
c:value("efq_codel")
c:value("nfq_codel")
c:value("sfq")
c:value("codel")
c:value("ns2_codel")
c:value("pie")
c:value("sfq”)
c:value(“cake")
c.default = "fq_codel"
c.rmempty = false

@Dave, which of these do we want to keep carrying and which can we safely retire? Especially in the openwrt context most of the experimental ones are not available anyways. (If anybody has a way to make tc or the kernel enumerate the qdiscs that are either compiled in or available as modules that would be much appreciated.)

Best Regards
	Sebastian


> 
> So either if someone has any tips on how to fix this, or can just give me how to configure qdiscs manually, I will be able to do cake testing on the WRT1200AC.
> 
> -- 
> Mikael Abrahamsson    email: swmike at swm.pp.se
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