UV Realtime Master Thread

[texasguy37 ACE - Champion]

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NoOneImportant4444 wrote:

Is there a problem with the program running on a 3801HGV with firmware 6.3.7.50???

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I have the 3801HGV and 6.3.7.50 firmware.  I'm having no issues with UVRT 1.91.

[NoOneImportant4…]

SomeJoe and Texasguy - thank you for the reply.  It maybe just my gateway  - may have to get it replaced again

What the program seems to be doing is getting stuck in the "Gathering Statistics" - After I posted the original question on the problem, it started worked again but if I shut it down and then start it again - it may or may not work.

I do know that the program is connecting to SomeJoe's web server since it is displaying the UR Realtime tips at the bottom of the pane.

Right now - it appears to be working correctly but if it does it again - I will post screen shots of all the panes.

Thanks again for your time and your replies.

[SomeJoe7777 ACE - Geek]

No problem. Be aware that the 2Wire gateways have some poor behavior if the upload bandwidth is saturated. I have personally seen many instances where if the upload bandwidth is fully utilized (Slingbox, Bittorrent, etc.), then the web requests to the modem will not complete. This will indeed cause UVRT to hang at the "Gathering Statistics", since the web requests to the RG never finish.

[NoOneImportant4…]

SomeJoe - Thanks for the info and I believe that's what is happening in my case.

Again - thanks for the replies they are much appreciated.

[KaliJay]

I tried searching first...sorry if this has been covered...

I'm new to U-Verse. They installed the iNID pair-bonded setup yesterday. I installed and ran UV Realtime today and noticed the Upstream Max Rate isn't displayed even though it does appear on the device's web page. On the device's page I see aggregate User Rates of 25205/2038 and Max User Rates of 48872/7924. UV Realtime shows a "Profile Rate" that matches the User Rate and a Max Rateof 48894/- (no upstream rate is shown). It shows some calculated rates below based on the bit allocation with 46269/2777. It also estimates my VRAD distance as 2400ft, but I suspect it's over 5000ft.

What does the modem base that 7924kbps max upstream rate on and why doesn't UV Realtime show anything for upstream max? The service seems to be working just fine: low pings (under 30ms) and 11.7/1.46 speeds. Just curious. Thanks!

[SomeJoe7777 ACE - Geek]

To my knowledge, 2Wire gateways in the 38xx series have never shown the max upstream rate.

Can you please post the contents of the web page from the RG where the upstream max rate is being shown?

If indeed yours is showing it somewhere, I will investigate what I can do with UVRT to see if that information can be displayed.

[KaliJay]

Here is the HTML from the broadband settings page and here is the sysinfo page if that helps.

I noticed a few other values in the upstream area that show up on my unit's page but aren't visible in UV Realtime.  I'm sure you'll see that when you look at the HTML.

Let me know if you need anything else.

Thanks,

Jay

[KaliJay]

Oh...you probably want to see the DSL screen as well....

[KaliJay]

I have a question or two...and please keep in mind I've only been studying DSL for a couple of days now and so I probably just missed something.

Calculating line rates based on allocated bits: you currently multiply the bits by 4.3125 to get the rate. 4.3125khz happens to be the bandwidth of each DMT subchannel. However, what I've read indicates that each DMT subchannel operates at a symbol rate of 4000 baud (or 4 khz) which would mean that you would multiple the bits by 4000 to get the speed in bits per second (or multiple by 4 to get kbps).

That is, if the number of allocated bits was 9328 (per the example in your documentation), the line rate would be 9328 x 4000 = 37,312,000bps or 37,312kbps (1000 bits = 1 kb). I don't know where you get the 5:4 overhead ratio so I'm not sure if that 37,312kbps is appropriate for a 32,200kbps profile (with my calculation that would only be 16% overhead for error handling).

Also, and since I'm the first user to notice an upstream max rate in his config, and it's substantially higher than the allocated bits, we might need to assume the i3812V only allocates enough bits for upstream rather than tha maximum possible (like it seems to do for downstream). In my case, the i3812V reports about 7.9mbps of maximum upstream bandwidth...but only 644 bits are allocated.  644 x 4000 = 2576kbps which seemd like just enough for a 2038 upstream profile (26% overhead).

Unless we see more configs showing a max user rate for upstream like mine is showing, we don't really know for sure.

Feel free to show me how little I know...

[SomeJoe7777 ACE - Geek]

Correct -- each subcarrier is using 4.3125 kHz of bandwidth (and are spaced at 4.3125 kHz intervals, hence the term for this modulation method - Orthogonal Frequency Division Multiplexing, OFDM).

However, from my research, the symbol rate is kind of ambigous. Some write-ups say that the symbol rate is 4.3125 kHz, matching the bandwidth, some say 4 kHz, and others say 4.3125 kHz but with a guard interval. In UVRT, I chose to use 4.3125 kHz as the symbol rate because the numbers on most people's lines tended to calculate pretty well by using that. I got less correlation with other calculation methods.

For both the upstream and downstream directions, the actual line rates are generally set to match the raw bitrate required by the profile in use. E.g. for a 32000 kbps downstream rate, the actual line rate is about 40000 kbps, which allows 8000 kbps of overhead for FEC.

The ratios I'm using to estimate the FEC overhead aren't perfectly accurate either because there's two different layers of FEC. The inner layer is a convolutional code (which typically uses small integer ratios like 3:2, 4:3, or 5:4 like I've used) , while the outer error correction if I remember correctly is a 223/256 Reed-Solomon block code. Because of the multiple layers of error correction, the ratios I'm using for the calculations are only an approximation.

[KaliJay]

Thanks for the explanation. I think i'm starting to understand. If you need help testing a new version which supports the max upstream rate just let me know.

[Bayshun]

Hey there, having trouble getting UV Realtime installed properly. When it goes to install Visual Runtime Libraries it says that the install failed because I have a newer version, and then it seems that it doesn't install it. When I go to use UV it works, but it says because RRDT isn't installed the usage tab won't work. Any suggestions?

[quillsta1n]

I downloaded the RealTime software but it won't install because it gets stuck at the WinPcap installation. I get an error that says there is a previous installation of WinPcap and it must be removed before the new one can be installed. I did the uninstall with "Add/Remove Programs". I looked for and deleted the WinPcap folder. Can't find any other files related to winpcap, but I still get the same error. Any suggestions?

[SomeJoe7777 ACE - Geek]

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Bayshun wrote:

Hey there, having trouble getting UV Realtime installed properly. When it goes to install Visual Runtime Libraries it says that the install failed because I have a newer version, and then it seems that it doesn't install it. When I go to use UV it works, but it says because RRDT isn't installed the usage tab won't work. Any suggestions?

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Hi Bayshun,

If you go to Programs and Features, there should be a listing for "Microsoft Visual C++ 2010 x86 Runtime - 10.0.xxxxx".  The xxxxx should be either 30319 or 40219.

If you have any other version, the UV Realtime installer won't recognize it, will think that it's not installed, and then attempt to install it, which will fail because it's actually already installed.

What you can do is remove the version that you have, and let UV Realtime install it's included version.  This will not impact any other program you have on the machine, as almost all versions of the C++ 2010 x86 runtime are the same (10.0.x), they're just different build numbers that have been included with different software packages.

[SomeJoe7777 ACE - Geek]

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quillsta1n wrote:

I downloaded the RealTime software but it won't install because it gets stuck at the WinPcap installation. I get an error that says there is a previous installation of WinPcap and it must be removed before the new one can be installed. I did the uninstall with "Add/Remove Programs". I looked for and deleted the WinPcap folder. Can't find any other files related to winpcap, but I still get the same error. Any suggestions?

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1. Remove any entries in Programs and Features (or Add/Remove Programs on Windows XP) for WinPCap.

2. Restart the computer.

3. Look in the following directories:

• C:\Windows\System32

• C:\Windows\System32\drivers

• C:\Windows\SysWow64\

(The last directory listed there is only present on 64-bit machines.  If you have a 32-bit machine, ignore that directory).

If any of the following files are present in any of those directories, then delete these files:

• Packet.dll

• wpcap.dll

• pthreadVC.dll

• npf.sys

4. Once those files are deleted, reboot your system again.

5. Try to install UV Realtime again.

[quillsta1n]

Thanks SomeJoe. I'll try this when I get home this evening.

[quillsta1n]

here are my screen captures.

[SomeJoe7777 ACE - Geek]

Your error table is showing some issues with your system.  There are a lot of corrected and uncorrected blocks.  Are you showing any symptoms of problems with your system, like poor Internet connectivity, or pixelation and freezing on the TV?

If so, you should call technical support, have them send a premises tech to your house to check the line and see where the problem is.

[gosporteer_1]

I'm having trouble with slow download speeds with my uverse internet.

I downloaded and installed uvrealtime and everthing seemed to install ok but the program is unable to connect to my nvg510 (comes up with "unable to connect to 2wire router")

ip address is correct and i have checked my firewall and uvrealtime can connect to the internet.

I can access the gateway through my browser and i've run the tests available and it comes up good.

would appreciate whatever help is available

[texasguy37 ACE - Champion]

The U-verse Realtime Tool does not work with the NVG510 gateway.

[gosporteer_1]

i should have read the system requirements a little closer my bad thanks for coming back so quickly

[marv44]

I'm using UVRT version 1.9.1 with the 2wire 3600 modem. I have a question about the error table page from the RG as reflected in UVRT. It seems that the data shown in the "last 15 minutes" and "last 24 hours" doesn't persist for the requisite time, i.e., the data in the "last 15 minutes" doesn't stay there for 15 minutes, and the data shown in the "last 24 hours" column doesn't remain there for 24 hours. I just saw this for an event that happened this morning involving a loss of signal. The "last event" time showed around 08 minutes, yet the data disappeared from the "last 15 minutes" column AND the "last 24 hours" column. I know that UVRT is just reporting what the RG shows, but why isn't this data correctly shown in the error table on the RG?

[SomeJoe7777 ACE - Geek]

I believe the way it works is that the RG does not do a "trailing 24 hours" or "trailing 15 minutes" computation, but instead just collects totals, and then resets those columns every 15 minutes (or 24 hours) as appropriate.

In your case, your RG may have crossed the 24 hour boundary just after you first looked at the totals, resetting both columns to 0.

[jackdeth999]

Dan, I found a copy of a little util you wrote called "2WireMRTG.exe" that can run with MRTG to collect stats from the RG, which still works with the latest firmeware (or at least with 6.3.7.50-plus.tm, which is what I have).

Would you be willing to release the source code to that so it could be ported to linux?

[OldGatorDelt]

Can someone give me the link for the UV Realtime documentation...  Thanks...

[texasguy37 ACE - Champion]

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OldGatorDelt wrote:

Can someone give me the link for the UV Realtime documentation...  Thanks...

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If you have installed the software, the documentation is on your computer in the C:\Program Files\UV Realtime\Documentations folder.

[SomeJoe7777 ACE - Geek]

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OldGatorDelt wrote:

Can someone give me the link for the UV Realtime documentation...  Thanks...

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You can also view the documentation using your Start Menu -> Program Files -> UV Realtime -> Main Documentation.

[SomeJoe7777 ACE - Geek]

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jackdeth999 wrote:

Dan, I found a copy of a little util you wrote called "2WireMRTG.exe" that can run with MRTG to collect stats from the RG, which still works with the latest firmeware (or at least with 6.3.7.50-plus.tm, which is what I have).

Would you be willing to release the source code to that so it could be ported to linux?

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I will consider that.  However, the source is VB.Net, written for .Net 4.0.  There are two assemblies, the 2WireMRTG.exe and the DataRetriever.dll.  The majority of the functionality is in DataRetriever.dll.

I do not know how useful this will be for porting to Linux.  To my knowledge, the open-source .Net framework for Linux (called Mono) is only compatible with .Net 2.0.  However, in these two specific assemblies, I don't think I used any .Net 4.0 specific APIs, so you may be able to build them as if they were .Net 2.0 sources.

Alternatively, you can port the code manually and recompile it in straight C.  That might be difficult, the DataRetriever makes heavy use of the .Net RegEx engine.  Maybe rebuilding it in something like Perl or Python would work better, but I'm not very familiar with either.

[jackdeth999]

Have you noticed any instability in the RG when you hit it with these queries from MRTG every 5 minutes for any length of time?