Re: Performance test for CUBIC in stable/14

Change the subject to `Performance test for CUBIC in stable/14`, was `Re:
Performance issues with vnet jails + epair + bridge`.

I actually prepared two patches, one depends on the other:

https://reviews.freebsd.org/D47218     << apply this patch firstly
https://reviews.freebsd.org/D47213     << apply this patch secondly

Please let me know if you have any questions.

It passed my local test on a 1% drop rate link, with nearly 3.9X
performance improvement.

before patching:
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.07   sec  27.0 MBytes   211 Mbits/sec  207   12.8 KBytes

[  5]   1.07-2.12   sec  18.0 MBytes   144 Mbits/sec  151   11.4 KBytes

[  5]   2.12-3.07   sec  22.0 MBytes   194 Mbits/sec  189   11.8 KBytes

[  5]   3.07-4.07   sec  23.0 MBytes   194 Mbits/sec  203   10.8 KBytes

[  5]   4.07-5.06   sec  18.0 MBytes   153 Mbits/sec  165   15.0 KBytes

[  5]   5.06-6.11   sec  25.0 MBytes   200 Mbits/sec  227   26.9 KBytes

[  5]   6.11-7.07   sec  23.0 MBytes   201 Mbits/sec  189   10.7 KBytes

[  5]   7.07-8.07   sec  23.0 MBytes   193 Mbits/sec  215   12.7 KBytes

[  5]   8.07-9.03   sec  22.0 MBytes   191 Mbits/sec  185   10.4 KBytes

[  5]   9.03-10.09  sec  24.0 MBytes   191 Mbits/sec  219   1.41 KBytes

- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.09  sec   225 MBytes   187 Mbits/sec  1950
sender
[  5]   0.00-10.14  sec   225 MBytes   186 Mbits/sec
 receiver

iperf Done.

after patching:
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.08   sec   118 MBytes   919 Mbits/sec  872   47.5 KBytes

[  5]   1.08-2.07   sec   109 MBytes   917 Mbits/sec  849   56.9 KBytes

[  5]   2.07-3.09   sec   111 MBytes   915 Mbits/sec  810   54.5 KBytes

[  5]   3.09-4.07   sec   108 MBytes   922 Mbits/sec  831   43.8 KBytes

[  5]   4.07-5.07   sec   109 MBytes   919 Mbits/sec  813   31.1 KBytes

[  5]   5.07-6.02   sec   103 MBytes   913 Mbits/sec  815   60.2 KBytes

[  5]   6.02-7.07   sec   116 MBytes   921 Mbits/sec  850   58.2 KBytes

[  5]   7.07-8.06   sec   109 MBytes   922 Mbits/sec  822   46.4 KBytes

[  5]   8.06-9.06   sec   109 MBytes   913 Mbits/sec  843   59.4 KBytes

[  5]   9.06-10.07  sec   110 MBytes   917 Mbits/sec  815   42.3 KBytes

- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.07  sec  1.08 GBytes   918 Mbits/sec  8320
sender
[  5]   0.00-10.11  sec  1.08 GBytes   915 Mbits/sec
 receiver

iperf Done.

cc

On Fri, Oct 18, 2024 at 9:13 AM void <void@f-m.fm> wrote:

> On Fri, Oct 18, 2024 at 07:28:49AM -0400, Cheng Cui wrote:
>
> >The patch is a TCP congestion control algorithm improvement. So to
> >be clear, it only impacts a TCP data sender. These hosts are just traffic
> >forwarders, not TCP sender/receiver.
> >
> >I can send you a patch for the FreeBSD 14/stable to test performance
> >improvement.
>
> sure! I'm happy to test
>
> >If you think FreeBSD 14.x releases are critical to your business, or you
> >can't wait until FreeBSD 15 is released, you can file a request to add
> this
> >patch in the 14.x. I think https://bugs.freebsd.org/bugzilla/ is where a
> >user can file such request. If it is approved, which I am not sure if
> >it can be approved, then maybe it can be included in the next 14.x
> release.
>
> thank you, I'll try :D
> --
>
>

-- 
Best Regards,
Cheng Cui