On Tue, 30 Jun 2015, Mikael Abrahamsson wrote:
On Mon, 29 Jun 2015, Dave Taht wrote:
attached is a patch for that, put it in your
feeds/cero/kmod_sched_cake/patches
directory, rebuild (make package/kmod-sched-cake/{clean,compile,install})
I compiled openwrt trunk with linux kernel v4.0 and this patch, and the
results are here <http://swm.pp.se/aqm/rrul_150630-cake-l4.0-1.tar>.
As far as I can tell sirq load is higher rather than lower so it doesn't seem
like kernel 4.0 has any significant performance benefits, rather the
opposite.
So it seems I was mistaken. I now did some tests, with 4.0 with the
cakepatch, with 3.18 with the cakepatch (that Dave sent the other day),
and then 3.18 with regular cake as it is in the ceropackages repo
yesterday.
The columns are mss size, -R or not means reverse, so with -R main packet
sizes are going in the server->client direction, ie flowing into eth0
which hosts the htb. Then it's the megabit/s as measured by iperf and then
the sirq load as seen by top. This jumps around a bit so don't read too
much into it. However, it looks like 4.0 is actually a slight improvement
especially for smaller packet sizes and in the server-client direction.
4.0 cakepatch
-M 200 -R 167 M 94%
-M 300 -R 188 M 71%
-M 600 -R 362 M 77%
-R 861 M 88%
-M 200 350 M 88%
-M 300 380 M 80%
-M 600 680 M 63%
860 M 55%
3.18 - cakepatch
-M 200 -R 140M 83%
-M 300 -R 167M 72%
-M 600 -R 308M 69%
-R 750M 82%
-M 200 289M 74%
-M 300 406M 73%
-M 600 780M 80%
860M 57%
3.18 vanilla
-M 200 -R 150M 90%
-M 300 -R 166M 72%
-M 600 -R 305M 68%
-M -R 740M 82%
-M 200 304M 80%
-M 300 440M 80%
-M 600 800M 81%
863M 56%
--
Mikael Abrahamsson email: [email protected]
_______________________________________________
Cerowrt-devel mailing list
[email protected]
https://lists.bufferbloat.net/listinfo/cerowrt-devel
