Latency Decrease?

[Koolkid1935]

Is there any way that the latency of U-verse (internet) can be decreased? I always get in the 50-60ms ping times, with 20ms just to the first hop outside my RG. I think it may have something to do with the VDSL being on the interleaved channel versus the fast channel, but I am not sure this is the root of the problem, but it probably adds some latency.

I always hate having high ping times in games, then booted because it isn't below x ms, even though I have a really fast connection. I actually kind of miss my ping timings in the teens like I had with cable, even though the speed wasn't as fast as U-verse is. Basically, when I got U-verse, I traded low latency for faster speeds, even though I would prefer both.

I understand the interleaved channel gives higher reliability while sacrificing latency, but would there be a way to customize which channel to use per customer based on their max sync? I am not 100% sure how the Alcatel DSLAM would handle this, but it could be something to look into.

[Uturnaroun]

How do I find out the latency of the first hop outside the RG?

[Koolkid1935]

You can run a trace route (Start -> Run -> type 'CMD' -> type 'tracert google.com' (or whatever other site you want) without the ') to your favorite website, then look at the first address outside of your WAN IP (usually the gateway IP that shows up in the RG's internet information), and there should be some times in ms there. Once you get that address, you can ping it to get a more accurate number.

[Uturnaroun]

I did what you said but it just keeps saying Request Timed Out for each hop.

[Koolkid1935]

Try pinging the IP address that shows up as the default gateway on this page: http://192.168.1.254/xslt?PAGE=B02

[Uturnaroun]

27ms. Wow, I have very high latency. You said you had a tech over. Did he help with the latency?

[Koolkid1935]

Actually, I never had a tech out for the latency issues, the tech I mentioned earlier was my install tech.

I did put a call in and got forwarded to a tier 2 tech on this issue about a month ago. He said there was nothing he could do...and he told me it was probably just the server I was trying to use, and to try a different one. I doubt it is the server, as every speedtest server gives me high latency. Heck, even to their own gateway I get high latency...

Message Edited by Koolkid1935 on 07-31-2007 10:53 PM

[Uturnaroun]

Well speedtest.net is giving me readins in the 60s but dslreports is giving me readings in the 30s. I wonder why.

[SteveP_1]

There is a website called 2wire.com that will give you a thru put in megabits per your connection. If you are in the range you have subscribed for your good to go. If not call ATT. Paste this into your browser address.

www.2wire.com/bandwidth/initialmeter.php

[Koolkid1935]

Throughput and latency are two different things, although in some cases, one can influence the other. The latency deal is nothing 2wire can fix, as it is not their network that is at fault here.

I use speedtest.net for my speedtests BTW.

[gofer6064]

In responce to the question about latency decrease. I am running in the 50's most of the time, athough it does depend on the time of day or night that i check it, i currently only have AT&T pro high speed, no u-verse yet. (latency does not perticularly matter to me right now no gaming at this point.) I came acrossed a web site www.ml-ip.com, and found an article there #7 about latency and bandwith. It might be a little help to you, Also AT&T yahoo help has a web site that you can check your thru put, mine is currently wll into what they said i should get.

[spd2demun ACE - Master]

THANKS SO MUCH for that link!  I have been having to login at the desktop to check things and never thought about this!  Now, if I only understood all that is there!  What are the most important things to look for in general performance?

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Koolkid1935 wrote:

Try pinging the IP address that shows up as the default gateway on this page: http://192.168.1.254/xslt?PAGE=B02

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[Uturnaroun]

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gofer6064 wrote:

In responce to the question about latency decrease. I am running in the 50's most of the time, athough it does depend on the time of day or night that i check it, i currently only have AT&T pro high speed, no u-verse yet. (latency does not perticularly matter to me right now no gaming at this point.) I came acrossed a web site www.ml-ip.com, and found an article there #7 about latency and bandwith. It might be a little help to you, Also AT&T yahoo help has a web site that you can check your thru put, mine is currently wll into what they said i should get.

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Do you have a direct link to the article? I can't find it.

[gofer6064]

TO  uturnaroun and ayone else interested, using yahoo,google or whatever you use,type in www.ml-ip.com takes you to e pipe then down to #7 the effects of latency and bandwith on actual broadband performance (PDF) seems like using it off the message takes you to a different place.

[Koolkid1935]

Finally found it, here is a direct link: http://www.ml-ip.com/html/support/appnotes/broadband-latency.pdf

Message Edited by Koolkid1935 on 08-06-2007 07:18 PM

[spd2demun ACE - Master]

I got "not available, return to your original page"?

[Koolkid1935]

Ah, thanks for catching that. I fixed the link now, just needed http:// in front of it, otherwise, the forum software took it as a relative link.

[Uturnaroun]

http://helpme.att.net/dsl/speedtest/

Here is the direct link to the offical AT&T throughoutput test.

[spd2demun ACE - Master]

Thanks!  Here's what I got (using Houston as closest):

Download = 2.832 Mbps
Upload = 946.96 kbps

 Approximate time required to
download an average MP3 file (2.5 MB)

Your High SpeedInternet Throughput
  (approx. 7 sec)

Good or bad?  This was with the laptop's WAP.

[Uturnaroun]

Well if you have the Pro speed, then it is fine.

[Koolkid1935]

Fine for speed, but the latency may still be a problem, which is one thing that test doesn't test for.

[Uturnaroun]

Yeah. I wonder what we can do about this whole latency problem? Its not like we can just go into the RG and somehow turn down the latency. Also, do people with FTTP have high latencies as well?

[tburris_1]

FTTP here.  I live in H-town and get a 50-75 ping to Austin.  With FTTP that should be in the teens.

[spd2demun ACE - Master]

I have a dumb question...could it be something in the cable lines?

Back with TWC, we had no latency problems...as in with kitchen and living room TVs on at the same time, they were perfectly synced, as you could see at hear both sets at once from either room.   They replaced all the lines inside and outside my house about 6 mos. ago when the lines were cut outside during a landscape project (cable inside has been here since around 1982!), but ironically, that's when we noticed the out-of-sync!

Is that possible?  But looks like the person who just posted is having the same problem without coax?

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Koolkid1935 wrote:
Fine for speed, but the latency may still be a problem, which is one thing that test doesn't test for.

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[spd2demun ACE - Master]

Yes, I had Pro before with plain DSL and that was the fastest you could get "back then".  I have noticed Uverse's has a much slower load and response time on my laptop/wireless though.

[Uturnaroun]

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spd2demun wrote:

I have a dumb question...could it be something in the cable lines?

Back with TWC, we had no latency problems...as in with kitchen and living room TVs on at the same time, they were perfectly synced, as you could see at hear both sets at once from either room.   They replaced all the lines inside and outside my house about 6 mos. ago when the lines were cut outside during a landscape project (cable inside has been here since around 1982!), but ironically, that's when we noticed the out-of-sync!

Is that possible?  But looks like the person who just posted is having the same problem without coax?

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Koolkid1935 wrote:
Fine for speed, but the latency may still be a problem, which is one thing that test doesn't test for.

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I think if it was something in the cable lines, not everyone would be having this same problem. So it can't be.

Message Edited by Uturnaroun on 08-08-2007 03:15 PM

[Koolkid1935]

I can tell you it isn't the coax lines, as a computer 6 feet from the RG still has latency problems, heck, even when I ping FROM the RG to AT&T's gateway it still has high latency. BTW, the VDSL line is over Cat5.

[Uturnaroun]

Oh, I never knew the line outside is cat5. I thought it was copper (unless its the same thing). And how do you find out AT&T's gateway. I want to try pinging it. Is it the one that says gateway in the IP Details in the MDC?

[Koolkid1935]

That would be their Gateway

The drop from the pedestal to the NID isn't really Cat5, but it is a copper pair.

[Uturnaroun]

Ok. And to ping it I type "tracert (IP # goes here)" in cmd?