Re: [slim] Transporter and SB Classic packet throughput
My Transporter plays 16/44 and 24/96 PCM streams just fine. Since I am an engineer by education, I can't stand that the packets are dropped and then re-transmitted. :-) I am guessing that the TCP window size is too big. The LMS sends more data than the Transporter can accept. This could lead to buffer overflow and then packet re-transmission. -- vett93 Main system: Source: Transporter, modded by ModWright: http://www.modwright.com/modifications/transporter-truth-mods.php Preamp: Dude from Tube Research Labs: http://www.tuberesearchlabs.com/products/dude.html Amp: NP100 Platinum from AltaVista Audio: http://www.altavistaaudio.com/np100.html Speakers: Alto Utopia Be from Focal-JMLab: http://www.ultraaudio.com/equipment/focal_jmlab_alto_utopia.htm vett93's Profile: http://forums.slimdevices.com/member.php?userid=13301 View this thread: http://forums.slimdevices.com/showthread.php?t=93173 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] Transporter and SB Classic packet throughput
vett93;685596 Wrote: My Transporter plays 16/44 and 24/96 PCM streams just fine. Since I am an engineer by education, I can't stand that the packets are dropped and then re-transmitted. :-) I am guessing that the TCP window size is too big. The LMS sends more data than the Transporter can accept. This could lead to buffer overflow and then packet re-transmission. ignorance is bliss :-) -- Mnyb Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: Touch + powered Fostex PM0.4 Misc use: Radio (with battery) iPad 64gB wifi +3g with iPengHD SqueezePad (in storage SB3, reciever ,controller ) Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=93173 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] Transporter and SB Classic packet throughput
Half of the fun is in tweaking the system and the other half is in listening to music! :-) -- vett93 Main system: Source: Transporter, modded by ModWright: http://www.modwright.com/modifications/transporter-truth-mods.php Preamp: Dude from Tube Research Labs: http://www.tuberesearchlabs.com/products/dude.html Amp: NP100 Platinum from AltaVista Audio: http://www.altavistaaudio.com/np100.html Speakers: Alto Utopia Be from Focal-JMLab: http://www.ultraaudio.com/equipment/focal_jmlab_alto_utopia.htm vett93's Profile: http://forums.slimdevices.com/member.php?userid=13301 View this thread: http://forums.slimdevices.com/showthread.php?t=93173 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] Transporter and SB Classic packet throughput
yea btw networks test is even wierder on squeezeplay devices . but it serves it purpose , most people does not test functioning networks , thay usually have problems usually with wifi , here the test is still god enough and gives you some valuable info . I reinstalled the network test plug and managed 1500k to my boom (wired). -- Mnyb Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: Touch + powered Fostex PM0.4 Misc use: Radio (with battery) iPad 64gB wifi +3g with iPengHD SqueezePad (in storage SB3, reciever ,controller ) Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=93173 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] Transporter and SB Classic packet throughput
I sometimes get 1.5Mbps, measured by Network Test, on my wired SB and Transporter too. When I play 24/96 PCM streams to the Transporter, I get 5+Mbps as measured by the Wireshark on the PC (Windows Vista). It plays fine. But I see lots of retransmissions -- vett93 Main system: Source: Transporter, modded by ModWright: http://www.modwright.com/modifications/transporter-truth-mods.php Preamp: Dude from Tube Research Labs: http://www.tuberesearchlabs.com/products/dude.html Amp: NP100 Platinum from AltaVista Audio: http://www.altavistaaudio.com/np100.html Speakers: Alto Utopia Be from Focal-JMLab: http://www.ultraaudio.com/equipment/focal_jmlab_alto_utopia.htm vett93's Profile: http://forums.slimdevices.com/member.php?userid=13301 View this thread: http://forums.slimdevices.com/showthread.php?t=93173 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] Transporter and SB Classic packet throughput
Packet reassembly problems doesn't necessarily mean retransmisiion - it could mean a Max PDU size mismatch somewhere - I had a problem a few years ago with a network driver which had this issue. You could use netstat on the Windows PC with -s and check stats on IP and TCP protocols. THis is easier than Wireshark to check what PC actually sees. -- bpa bpa's Profile: http://forums.slimdevices.com/member.php?userid=1806 View this thread: http://forums.slimdevices.com/showthread.php?t=93173 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] Transporter and SB Classic packet throughput
Good point. I used netstat -s and found not too many re-transmissions. So I sent the wireshark traces to a friend who knows more about this tool. He told me the reassemblies were from the upper layers. So I don't have a transmission problem. Thanks all for the help. Guess the throughput testing on Transporter and SB3 is not accurate at all. -- vett93 Main system: Source: Transporter, modded by ModWright: http://www.modwright.com/modifications/transporter-truth-mods.php Preamp: Dude from Tube Research Labs: http://www.tuberesearchlabs.com/products/dude.html Amp: NP100 Platinum from AltaVista Audio: http://www.altavistaaudio.com/np100.html Speakers: Alto Utopia Be from Focal-JMLab: http://www.ultraaudio.com/equipment/focal_jmlab_alto_utopia.htm vett93's Profile: http://forums.slimdevices.com/member.php?userid=13301 View this thread: http://forums.slimdevices.com/showthread.php?t=93173 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] Transporter and SB Classic packet throughput
Network test is not 100% reliable in higher bitrates it loads the player more than real transmissions. The code formthat have changed, I do remeber that i've sent more than that to a wired players but as the test does not work as well as it used to... 16/44.1 pcm is rougly 1.4mbps . And if they play just fine there is really no problem to solve . You may gain some reliability if you do serverside transcoding for flac on24/96 files with very high compression levels ( they can stutter) otherwise it serves no purpose . Or you can reflac those files with level -0 or -5 then the TP manages fine For alac you must trancode as they don't play it natively, but transcode to flac. You only need half the troughput with flac for the same resolution, that why most transcoding is set up to flac in the first place. I do remeber that my win XP never managed more than 1,5 mbps but ubuntu on the same PC got me up to 5 mbps when the test worked, the menu for it seems entirely gone on my boom ? You may have to use a controller to start it. -- Mnyb Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: Touch + powered Fostex PM0.4 Misc use: Radio (with battery) iPad 64gB wifi +3g with iPengHD SqueezePad (in storage SB3, reciever ,controller ) Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=93173 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
