On 2014/03/03 04:08, Xin Li wrote:
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On 3/2/14, 10:42 AM, Joe Nosay wrote:
On Thu, Feb 27, 2014 at 3:22 AM, Joe Nosay <superbisq...@gmail.com>
wrote:
On Wed, Feb 26, 2014 at 11:19 PM, Xin Li <delp...@delphij.net>
wrote:
On 02/26/14 18:52, Joe Nosay wrote:
On Wed, Feb 26, 2014 at 9:19 PM, Brooks Davis
<bro...@freebsd.org> wrote:
On Wed, Feb 26, 2014 at 07:36:29PM -0500, Joe Nosay
wrote:
The last thread on this was in 2006. Has it ever been
reconsidered or is the likelihood of too many damaged
packets the reason for not supporting? I'm not sure
where to put this question. Apologies for the noise.
You've provided next to no context. What is the
question? What thread are you referring to? If this is
the usual UDP then freebsd-net would be vastly more
appropriate than -current.
-- Brooks
Thanks. I will ask kevlo and maybe bring it up on
freebsd-net. It has to do with an implementation of the
JACK server using UDP Lite for transferring data.
http://freebsd.1045724.n5.nabble.com/UDP-lite-for-FreeBSD-td4010236.html
Looks
like nobody proposed a patch?
I think the concern was that this is not very useful in real-world
scenarios due to link layer error detection mechanism but that
doesn't raise a red flag to me assuming this is sufficiently self
contained feature as it would improve compatibility with other
operating systems.
Cheers,
https://github.com/torelizer/jack_trauma
Not my project; but, I want to port it to FreeBSD. First is to
get it to build from source. Use your raspberry pi with FreeBSD
to broadcast your tunes and all.
Thanks for all of the input. The project is being reworked to
improve the code.
Kevin Lo have a patchset but needs someone to do performance testing
(its impact on non-UDPLite applications), test with vimage, etc:
http://people.freebsd.org/~kevlo/udplite.diff
http://people.freebsd.org/~kevlo/udp-v.diff
Are you interested in working on these and report back?
The revised patch is available at:
http://people.freebsd.org/~kevlo/udplite.diff
I measure and compare the performance of UDP with/without UDP-lite patch,
the udp-lite patch doesn't affect the performance.
Tested system is FreeBSD/amd64 -CURRENT(r263301), machines were connected
via cross-link cable.
Machines:
---------
Dragon (connected to Monkey)
CPU: Intel(R) Core(TM) i3-2330E CPU @ 2.20GHz (2195.06-MHz K8-class CPU)
Origin="GenuineIntel" Id=0x206a7 Family=0x6 Model=0x2a Stepping=7
RAM: 2GB
NIC: on-board em(4)
Monkey (connected to Dragon)
CPU: Intel(R) Core(TM) i3-2330E CPU @ 2.20GHz (2195.06-MHz K8-class CPU)
Origin="GenuineIntel" Id=0x206a7 Family=0x6 Model=0x2a Stepping=7
RAM: 1GB
NIC: on-board em(4)
Monkey runs 'netserver'.
All tests done with netperf software:
UDP Stream test:
-------------------------
% netperf -c -l 60 -H Monkey -t UDP_STREAM -i 10,2 -I 99,5 -- -m 64 -s
57344 -S 57344
% netperf -c -l 60 -H Monkey -t UDP_STREAM -i 10,2 -I 99,5 -- -m 4096 -s
57344 -S 57344
% netperf -c -l 60 -H Monkey -t UDP_STREAM -i 10,2 -I 99,5 -- -m 16384
-s 57344 -S 57344
Without UDP-Lite patch:
Netperf test MTU BW BSIZE
------------ ---- ------ ------
UDP_STREAM 1500 211.3 64
UDP_STREAM 1500 950.4 4096
UDP_STREAM 1500 948.6 16384
With UDP-Lite patch:
Netperf test MTU BW BSIZE
------------ ---- ------ ------
UDP_STREAM 1500 216.5 64
UDP_STREAM 1500 950.3 4096
UDP_STREAM 1500 948.6 16384
Cheers,
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Kevin
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