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Premiere Elite performance enhancements

Discussion in 'TiVo Premiere DVRs' started by brentil, Oct 10, 2011.

  1. Oct 12, 2011 #81 of 234
    brentil

    brentil New Member

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    It's obvious now from the lack of major changes in the Elite model that we will not see a huge hardware shift until the S5 devices which if the info in the version 16 kernel is correct will be a CPU more in line with what modern cell phones have now. At that point larger amounts of RAM will make more sense as more and more applications would be capable of being run and Flash AIR would gobble up memory.

    I'm excited to get the 14.9 for my non-Elite S4 to see what types of benefits we get from that. After that I think the version 16 software looks like it could provide another system boost on top of what we'll be seeing from 14.9 when/if it arrives.
     
  2. Oct 12, 2011 #82 of 234
    jfh3

    jfh3 New Member

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    Posted this in the wrong place last night:

    Elite 1 hooked to cable coax and Ethernet port cabled to router connected to modem to Internet. PC running TiVo Desktop connected to same router.

    Elite 2 hooked to cable coax (different room). Ethernet port to Ethernet switch that connects Blu-ray player, Apple TV, and a regular Premiere.

    All devices would now have Internet access and all three Tivo boxes and the PC will see each other without the need for any other MoCA adapter, correct?

    I was looking at the Channel Master CM-6004 (MoCA adapter with 4 port FastEthernet switch), but I don't think I need it with the above setup, if I understand what the Elite MoCA bridge does.
     
  3. Oct 12, 2011 #83 of 234
    classicsat

    classicsat Astute User

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    Device #9 on the diagram is likely the OOB tuner for cablecard, which continually receives activation/service messages.

    Interesting to see the PSU is 12V only. That makes it a lot easier to replace, at least to jerry rig something if one has to. Near the PSU connector is a spot for a coaxial power connector, likely also developmental.
     
  4. Oct 12, 2011 #84 of 234
    MichaelK

    MichaelK New Member

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    my recollection was it wasn't specifically just a plain hard drive cache but rather it was specifically made so that the tivo's database fit on it so that anything you did in the menu's like go to NPL or reorder season passes was much faster. I beleive it also was somehow able to figure out to cache the database and not normal video streams (perhaps it only cached certain partitions?). maybe a modern drive cache has firmware that can be taught not to cache the video streams but the other stuff too?

    I believe the thought was at the time was that when the database had to be manipulated much of the delays were related to having to move stuff back and forth out of memory and on and off the drive, and since the drive needs to prioritize the video streams anything else that needs to access the hard drive is slowed down.

    I can't say on a S4- but i know that every tivo I've had, S1 directivo, S2 directivo, s2.5 directivo, S2DT, S3 all are slow as molasses reordering season passes or scheduling new programs or the like. So I'd assume any tivo could benefit from having enough ram to keep it's database in ram. I also assume that over the years the database has only grown and so when 512meg was enough for an S1 to successfully keep the database in memory it wouldn't be enough today.

    I know that I've made a lot of assumptions and where that usually gets you in life but i think they're sound.

    So I think that if tivo built all S4 boxes with more memory and then tweaked their code to use that larger store of memory (cache some stuff so it doesn't have to hunt the net the instant you hit the menus as an example) that the box would be snappier in many respects. I am not really a techie so my opinion here come from reading these forums for 8-10 years and nothing more. So again take the soruce for what it's worth.

    from the cachecard website:
    http://www.9thtee.com/tivocachecard.htm
     
  5. Oct 12, 2011 #85 of 234
    andyw715

    andyw715 Active Member

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    If that works it would be sweet....not sure why it wouldn't
     
  6. Oct 12, 2011 #86 of 234
    Philmatic

    Philmatic Member

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    Correct...
     
  7. Oct 12, 2011 #87 of 234
    WO312

    WO312 Active Member

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    Finger...
    Pardon my ignorance, but are you saying that the ethernet switch at Elite 2 has no standard ethernet connection, and is relying on MoCA between the two Elites to supply the ethernet connection? If so, that is pretty neat. Pretty expensive, but pretty neat.
     
  8. Oct 12, 2011 #88 of 234
    jfh3

    jfh3 New Member

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    Thanks! That will save me some time if something doesn't work.
     
  9. Oct 12, 2011 #89 of 234
    jfh3

    jfh3 New Member

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    That's what I hope. I haven't hooked it up yet. That room doesn't have Cat5, but does have coax.

    Right now, I have a Tivo premiere and the other devices hooked up to a DAP-1522, but swapping that out for a small Dlink switch and using the Elite to bridge the two should provide better sustained performance for the Tivos, the TV and the Apple TV when it comes to streaming video.
     
  10. Oct 12, 2011 #90 of 234
    Philmatic

    Philmatic Member

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    Yep! That's how MoCA works:

    [​IMG]

    And speeds are around 80mbps, which is close enough to the 10/100 speeds that the Elite supports anyway, so you wouldn't be losing much by using MoCA over Ethernet.
     
  11. Oct 12, 2011 #91 of 234
    jfh3

    jfh3 New Member

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    The Elite has Gigabit Ethernet, right?

    Which brings up an interesting question - if you have both Ethernet and Coax/MoCA active on an Elite, does it prioritize traffic to the Ethernet interface (say doing Tivo Desktop transfer from that PC)?
     
  12. Oct 12, 2011 #92 of 234
    compnurd

    compnurd New Member

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    The only positive to MOCA would be if you cant get ethernet to the location you need
     
  13. Oct 12, 2011 #93 of 234
    evanborkow

    evanborkow Member

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    You will need a MoCa adapter at the router.
     
  14. Oct 12, 2011 #94 of 234
    jfh3

    jfh3 New Member

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    But I will have an Elite hooked up to the router via Cat5, so doesn't that bridge the LAN with the MoCA?
     
  15. Oct 12, 2011 #95 of 234
    jfh3

    jfh3 New Member

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    Just transferred an hour show in HD from an Elite to my laptop on a Gigabit network; took about 10 minutes. File was 4365MB.

    From Video copied to remote device network status:
    10 minutes 34 seconds @ 57.70 Mb/s

    (sorry for the cross-post, but this seemed more appropriate here)
     
  16. Oct 12, 2011 #96 of 234
    morac

    morac Cat God

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    Speeds for MoCA 1.1 are actually around 175 Mbps, but that only really comes in to play with multiple devices and streams. Individual devices are limited to around 80 mbps like you said, but multiple devices can be transferring at 80 mbps at the same time over MoCA.

    Also MoCA works as a star network. So the traffic goes directly between the appropriate MoCA devices, bypassing Ethernet completely (leaving it free for other traffic).
     
  17. Oct 12, 2011 #97 of 234
    aaronwt

    aaronwt UHD Addict

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    I just did some transfers with my Elite. From TiVo Desktop to the Elite with all four tuners on vacant channels, I hit a peak of 130Mb/s. But the average throughput was 95Mb/s for the entire hour long HD show(6.5GB)
    When I did a transfer with all tuners buffering(3 recording), the transfer rate was around 70Mb/s. Which is the typical speed for my two tuner Premieres.
     
  18. Oct 12, 2011 #98 of 234
    jfh3

    jfh3 New Member

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    Wonder why you got significantly more throughput than I did ... that's a huge difference.
     
  19. Oct 12, 2011 #99 of 234
    aaronwt

    aaronwt UHD Addict

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    I had the tuners on vacant channels. When all four tuners were buffering with 3 recording I had around a 70Mb/s average transfer rate.
     
  20. brentil

    brentil New Member

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    Sep 9, 2011
    Does your laptop have gigabit too, not a lot of them do yet? Could also be an issue with your router (bug a firmware fixes for example), maybe you have a pre cat5e network cable in the mix somewhere, or aaronwt might have a better gigabit network card with TCP Offload type features. Networks can be all kinds of finicky.
     

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