Re: [Cake] cake flenter results round 2

[Dave Taht <dave@taht.net>]

Also, it is easier (for me at least) to download a tarball of all your
results for a given run, rather than each one individually.

I am thinking we can rename ack-filter-aggressive to
ack-filter-too-damn-aggressive.

Dave Taht <dave@taht.net> writes:

> I just want to verify that you increased the netem limit by a lot in the scripts?
>
> tc qdisc add dev whatever root netem delay 10ms limit 100000
>
>
> Georgios Amanakis <gamanakis@gmail.com> writes:
>
>> I did some more testing. Same setup as before, I varied the amount of delay:
>>
>> server -- delay -- mbox -- client
>> netserver Xms/Xms 45/900mbit
>>
>> Cake config:
>> qdisc cake 801b: dev mbox.l root refcnt 2 bandwidth 45Mbit diffserv3
>> triple-isolate ack-filter-aggressive rtt 100.0ms noatm overhead 38 via-ethernet
>> mpu 84
>> qdisc cake 801c: dev mbox.r root refcnt 2 bandwidth 900Mbit diffserv3
>> triple-isolate rtt 100.0ms noatm overhead 38 via-ethernet mpu 84
>>
>> Results:
>> delay 10ms (rtt) flent:
>> https://drive.google.com/open?id=1hq_MRtocoDglTqxvAHoZvo932ThLBQaC
>> delay 10ms (rtt) stat:
>> https://drive.google.com/open?id=1kTnpreQzpRn-7iO6i85eXVf8GjJYg19e
>>
>> delay 20ms (rtt) flent:
>> https://drive.google.com/open?id=1Ollbqg7BzM4RiPuSH-tiIuaE8vnKu5tg
>> delay 20ms (rtt) stats:
>> https://drive.google.com/open?id=1nwS80SJmnVtubIXyYgBCIQdom_QfSSKB
>>
>> delay 40ms (rtt) flent:
>> https://drive.google.com/open?id=1nWUo82_L8_GobR1xbKms-jGhkNwT5msx
>> delay 40ms (rtt) stats:
>> https://drive.google.com/open?id=1oYfERh57fKHomVHb4z0dHQtFtP2U2aWs
>>
>> delay 80ms (rtt) flent:
>> https://drive.google.com/open?id=17j2T12Xmbi10i-0drHOgdc1x1NL8zAto
>> delay 80ms (rtt) stats:
>> https://drive.google.com/open?id=1e8cf5z4xDXYMbY8Q1rMvJd8J8F5OOcth
>>
>> delay 100ms (rtt) flent:
>> https://drive.google.com/open?id=1vg-A92eFc7AMSOuBgj-sRnANBMJda9og
>> delay 100ms (rtt) stats:
>> https://drive.google.com/open?id=1_WojJPa8h9JmNvmWjW9Gos8ShtvM-zt0
>>
>> I will repeat these with ack-filter instead of ack-filter-aggressive.
>>
>> George
>>
>> On Wed, Nov 29, 2017 at 10:44 AM, Toke Høiland-Jørgensen <toke@toke.dk> wrote:
>>
>>     > (That was also informative for me about how netperf decides when to
>>     > emit a data point…)
>>     
>>     In that case I can add that the stated reason for this way of doing
>>     things is performance (i.e., emitting data points should not interfere
>>     with transfer performance). This is mostly an issue on systems where
>>     getting time is expensive; which is not the case on modern Linux
>>     systems. But I'm not entirely sure that the optimisation only has
>>     historical reasons; it may be that some systems supported by Netperf
>>     still has this issue...
>>     
>>     -Toke
>>     
>>
>>
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