TiVoHD and S3 users post your MRV transfer speeds

Discussion in 'TiVo Series3 HDTV DVRs' started by BlackBetty, Oct 23, 2007.

  1. Oct 23, 2007 #41 of 149
    aristoBrat

    aristoBrat Well-Known Member

    1,110
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    Dec 30, 2002
    Va Beach, VA
    That's really slow. :(

    6 hours = 21,600 seconds.
    18 gigabytes = 18432 megabytes = ~147500 megabits

    Divide those out and the Tivos only sending data out at 6.82mbps, which is icky because your 802.11g should be able to handle at least 22mbps.
     
  2. Oct 23, 2007 #42 of 149
    Islanti

    Islanti Member

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    Dec 13, 2001
    Georgetown, TX
    Not entirely true. An N router handles reflections of the signal in a "G" network significantly better than a "G" router. When I put in an "N" router yesterday (in anticipation of MRV) I saw my signal strength go up ~30% and my speed stay at 54Mbps rather than dropping down to 11Mbps. I'm able to transfer an HD show from Tivo HD to Tivo HD just a bit faster than watching it.
     
  3. Oct 23, 2007 #43 of 149
    oldskoolboarder

    oldskoolboarder New Member

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    Jul 8, 2003
    Bay Area, CA
    Honestly, the only times I've seen jumbo frames make a difference is on gigabit ethernet interfaces, which Tivo doesn't support. In addtion, jumbo frames only works if both ends support it.

    For example, if you have a new Intel Mac and use the new Airport Extreme w/ gigabit ports, you can turn on jumbo frames and you should see a difference.
     
  4. Oct 23, 2007 #44 of 149
    speedz

    speedz New Member

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    Jun 11, 2004
    So far I am quite impressed. :D

    I Transferred 'Til Death' which info notes as 720p and watched it in Real Time without ever having to stop. It was transferring much faster than viewing time so I could had likely forwarded through all commercials but did not to get a clean test.

    Total Transfer time for Til Death @ 720p 30 min episode view time: 18 minutes
    This is on a standard wired 100mbs network from a S3 to a TivoHD.
    I found filesize on Info: 2.31 GB

    First Impression: :up:
     
  5. Oct 23, 2007 #45 of 149
    mikesay98

    mikesay98 New Member

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    Aug 25, 2006
    So is there any consensus as to what is the best way to do this, both on a wired and a wireless network? The arguments seem to focus on whether G or N is better. My personal opinion is that I don't need an N wireless router if the only point is to hard wire the TiVo to it. I'd rather just get a G router and have everything compatible with it, and still have speeds much, much better than the ones I'm getting right now on my B network.
     
  6. Oct 23, 2007 #46 of 149
    jrm01

    jrm01 New Member

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    Oct 17, 2003
    Pittsburgh
    OK. I just transferred another 30 min HD program over my wireless-g, this time without the distortion of another transfer going the other direction. It took 42 minutes to complete. Not great, but not bad.
     
  7. Oct 23, 2007 #47 of 149
    bdraw

    bdraw Member

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    Aug 1, 2004
    Tampa, FL
    I'm only seeing about 6.6Mbps on a wired 10/100 from the Series3 to my Windows box, using IE to download. I pull 80Mbps across the same switch all the time, so no doubt there is a hardware limitation in the TiVo.
     
  8. Oct 23, 2007 #48 of 149
    moyekj

    moyekj Well-Known Member

    11,918
    664
    Jan 23, 2006
    Mission...
    So far under "normal viewing conditions" I get about 20-30 Mbps (9-13 GB/hour) for MRV between 2 S3s. Normal viewing conditions for me being:
    * 802.11g WDS bridge between both S3s
    * Both tuners of both S3s tuned to SD and/or HD channels
    * Watching on receiving S3 before transfer completes

    Under "ideal conditions" I can get up to about 44 Mbps (20 GB/hour) for MRV between 2 S3s. Ideal conditions being:
    * S3s connected to same 100Mpbs switch via cat6 cables
    * All 4 tuners tuned to channels I don't subscribe to (thereby minimizing disk activity) - NOTE: This alone increases throughput about 50% for me since it apparently reduces load on both Tivos therefore enabling higher transfer rates.
    * Not watching the transfer as it happens on the receiving S3.

    So with above speeds under "normal" conditions SD transfers fly, and HD transfers are faster than real time, but not quite fast enough to be able to skip through all commercials of a 1 hour show. Under "ideal" conditions both SD and HD transfers fly so no problems avoiding commercials.

    For TTG it looks like I max out at 15 Mbps (~ 7GB/hour) under "ideal conditions". I think it's related to the originating Tivo having to work to create the encrypted .TiVo format so not much can be done to further optimize transfers for TTG case.
     
  9. Oct 23, 2007 #49 of 149
    jtseltmann

    jtseltmann New Member

    147
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    May 22, 2005
    Follow up:
    THD => THD sees about 10-20 Mbps under normal conditions (about half the S3). "Ideal" conditions were in the mid 20's at times. Testing done with HD program via wired ethernet and channels for all tuners as noted above.
     
  10. Oct 23, 2007 #50 of 149
    TiVoter123

    TiVoter123 New Member

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    Jan 1, 2001
    Orange, CA
    In the case of gigabit ethernet, it's not really gigabit end-to-end, as the tivo is limited to 100 mbps (I think ... correct me if I'm wrong).
     
  11. Oct 23, 2007 #51 of 149
    mchief

    mchief Morey

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    Sep 10, 2005
    Alexandria, VA
    I just transferred a 1 hours SD program from the THD to the S2 and it 1 hour and 5 minutes.

    The THD is wired and the S2 is wireless.
     
  12. Oct 23, 2007 #52 of 149
    Narf54321

    Narf54321 New Member

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    Mar 29, 2005
    You have to crowbar the backport drivers into the Tivo to make it work. It doesn't support Jumbo frames out of the box. Apparently it has to do with a lot fewer checks and ACKs, in addition to the large bit windows, as it transmits.

    More confusing is speedz and moyekj reporting some rather outstanding numbers.
     
  13. Oct 23, 2007 #53 of 149
    Formica

    Formica New Member

    2
    0
    Apr 24, 2007
    Tivo S3 on 100Mb to my PC. With two SD shows recording, I am getting about 17.5Mbps transferring a ~4.8GB file (Battlestar Galactica, "Maelstrom", Universal HD, 1080i). Attempting to bring up the NPL on another computer caused it to drop to about 5Mbps and then climb back up once the NPL was finished transferring.

    It just finished... and I have to say after all this time, I'm VERY surprised to see that it transferred it in its full HD glory. Wow. This is so cool.
     
  14. Oct 23, 2007 #54 of 149
    HDTiVo

    HDTiVo Not so Senior Member

    5,556
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    Nov 27, 2002
    No, it could be that the software is very suboptimal at this early point in its development.
     
  15. Oct 23, 2007 #55 of 149
    oldskoolboarder

    oldskoolboarder New Member

    459
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    Jul 8, 2003
    Bay Area, CA
    Possibly. It maybe likely that the Linux ethernet driver is not fully optimized. Up to this point, it didn't really need to be.
     
  16. Oct 23, 2007 #56 of 149
    Carsten

    Carsten New Member

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    Feb 4, 2007
    Downloading from the HTTPS interface I get ~2.0 MB/s. Of course this slows down if and when I view a station or change channels. But 2.1 MB/s (Mega Bytes Per Second) or so is about hte avg.
     
  17. Oct 23, 2007 #57 of 149
    wdwms

    wdwms Member

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    7
    Jan 10, 2003
    I'm getting very good speeds when going TivoS3 -> TivoHD.

    A half hour SD program is taking under 5 minutes
    An hour SD show takes about 10 minutes
    An 1 hour HD show (1080i) took about 15-18 minutes

    The HD xfer above was done while the TivoHD had shows being recording on the other tuners. So it was recording 2; downloading one and playing back the download to me all at the same time.

    All are fast enough to begin watching immediately. When watching you can see the green progress bar move!

    I originally had the S3 wired and the TivoHD wireless; I put that to bed real fast and ran Cat5 for the TivoHD. Not only did the performance go up to what you see above; but the TivoHD is actually running faster doing other things (menus, etc). Overhead of that wireless driver is dragging it down.

    Now the two tivos are patched into the same switch in the basement - super fast xfer rates; can't complain at all!

    -t
     
  18. Oct 23, 2007 #58 of 149
    slimoli

    slimoli New Member

    358
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    Jul 29, 2005
    I don't get it: 30 minutes, SD,1.5 GB, from S3 to PC through wireless G ...40 minutes. Same program tranferred back to S3 from PC...12 minutes. Why ? Nothing else was running on the PC and no recordings on the S3.
     
  19. Oct 23, 2007 #59 of 149
    HDTiVo

    HDTiVo Not so Senior Member

    5,556
    0
    Nov 27, 2002
    Here was the comment from Pony on the TiVo HD:

    I'll bet there's more performance to be had with software optimizations.
     
  20. Oct 24, 2007 #60 of 149
    murryamorris

    murryamorris Member

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    0
    Feb 1, 2005
    Yep, that's what I do on one of my Tivo's. It's wired to a G bridge (actually a G print server with 4 ports). My other Tivo is hard wired to my gigabit switch. I haven't timed transfers yet but it took maybe 30-40 minutes for my 1 hour SD at best quality from a THD to an S3 this way.
     

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