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Author Topic: Home/World Latency 4.0.6 [Locked]
Vault_News  3 stars
Title: 0110011010
Be Nice to Me I'm a Bot

Posts: 982
Registered: 2005-10-18 12:53:17
Quote:

We have been seeing a lot of confusion regarding some of our recent changes to the User Interface, specifically in regard to the new in-game latency meters. With 4.0.6, we have split the two separate connections the client forms to our game servers into two different ratings, labeled 'Home' and 'World'.

The speculation regarding what these ratings mean has been very interesting and some of the guesses as to what the numbers actually refer to have been pretty imaginative. Some have speculated that 'Home' referred to your personal latency and 'World' was Blizzard's latency. This is incorrect.

In essence, 'Home' refers to your connection to your realm server. This connection sends chat data, auction house stuff, guild chat and info, some addon data, and various other data. It is a pretty slim connection in terms of bandwidth requirements.

'World' is a reference to the connection to our servers that transmits all the other data... combat, data from the people around you (specs, gear, enchants, etc.), NPCs, mobs, casting, professions, etc. Going into a highly populated zone (like a capital city) will drastically increase the amount of data being sent over this connection and will raise the reported latency.


Prior to 4.0.6, the in-game latency monitor only showed 'World' latency, which caused a lot of confusion for people who had no lag while chatting, but couldn't cast or interact with NPCs and ended up getting kicked offline. We hoped that including the latency meters for both connections would assist in clarifying this for everyone.

As is probably obvious based upon this information, the two connections are not used equally. There is a much larger amount of data being sent over the World connection, which is a good reason you may see disparities between the two times. If there is a large chunk of data 'queued' up on the server and waiting to be sent to your client, that 'ping' to the server is going to have to wait its turn in line, and the actual number returned will be much higher than the 'Home' connection.

"Well, great," you may say, "but what does that mean to me?!"

Not much, maybe, but I wanted to focus on how local (or network) factors can (and will!) affect these numbers.

Here are the most common causes of high pings/latency (on both Home and World):

1) Wireless
2) Packet loss
3) Almost-but-not-quite-broadband*
4) Addons (yes, those wonderful UI modifications)
5) Firewalls (some firewalls do interesting things to latency... try playing without it to see if it helps!)
5) Mis-configured or defective home routers (please temporarily bypass before anything else)
6) Quality of Service and Traffic Management Systems performing packet queuing of some sort.
7) Net link saturation (not necessarily your ISP, but somewhere between you and Blizzard)


*As of July 2010, the 'official' definition of Broadband Internet (per the FCC) is '4Mbps downstream and 1Mbps upstream'. Anything lower than this is not 'officially' broadband.

Lowering video settings (especially view distance) has the added benefit of lowering the amount of data your connection is asked to convey, as well, so even that can be a valid troubleshooting step.

If your 'Home' connection latency is low and your 'World' connection latency is high, that frequently indicates that there is some sort of QoS congestion controls being applied to your internet connection, at either the micro (LAN) or macro (WAN) level. A common symptom would be that you would be able to chat, but not to cast.

If both connections report high latency, that means your connection to our servers, in general, is almost completely saturated, or 'overflowing'. Without making any claims where that saturation lies, that seems to have been the most common case to date.

Please refer to our support pages (such as http://us.blizzard.com/su pport/article.xml?locale=en_US&articleId=21018&parentCategoryId&pageNumber=1&categoryId=2329) or contact a technical support representative directly for further information and troubleshooting.
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Posted from WoW Vault
Malachi256  1 star
Posts: 158
Registered: 2002-11-12 17:33:28
My question is...

Why do my wife and I have substantially different numbers (our world latencies were over 50 apart) for these stats when our computers are literally sitting right next to each other and are both plugged in to the same router?

 

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Explorer / Soloer+Small groups / Some PvP
MMOin' since UO beta, still waiting for UO 2.0 done right
Arcilite_I  4 stars
Title: VN's Most Wanted
Posts: 1,260
Registered: 2002-1-27 08:46:24
Malachi256 posted:

My question is...

Why do my wife and I have substantially different numbers (our world latencies were over 50 apart) for these stats when our computers are literally sitting right next to each other and are both plugged in to the same router?



50ms isn't exactly 'substantially different'...

 

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PvPing since 1977
aon_mixed  4 stars
Title:
Pirate Kitty

Posts: 2,317
Registered: 2002-8-19 07:30:30
LPB
A good Internet connection, which will give you a lower ping, is a definite advantage in most real-time online games. Low pings are common among users with high bandwidth Internet connections, particularly if they are in relatively close proximity to the game server. A low ping will almost inevitably result in a player having an inflated ego about their gameplay abilities. On the other hand, if their gameplay is extraordinary, other players will almost inevitablity attribute it to a low ping.

 

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-Peo-  2 stars
Title: Caveat Lector
Posts: 408
Registered: 2005-2-2 08:38:42
It is amazing how nothing on my end changes, from the day before the patch and the day after the patch, yet performace goes WAY down and it is something on my end.

 

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SWTOR, Maybe in a year.
Back to WoW for now.
With a lil f2p CoH.
Ugh_Lancelot  3 stars
Title: Ooo...bouncy!
Posts: 766
Registered: 2002-6-17 14:37:05
blizznoob posted:

5) Mis-configured or defective home routers (please temporarily bypass before anything else)


Now taking bets on how many new infections happen because people don't know what happens when you connect directly to the interwebs instead of behind a router (even a cheap one).

 

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WoW and DAoC - Too many alts to count
Charter Member - Altaholics Anonymous
NukeMage  2 stars
Posts: 346
Registered: 2002-4-7 16:58:45
-Peo- posted:

It is amazing how nothing on my end changes, from the day before the patch and the day after the patch, yet performace goes WAY down and it is something on my end.






Maybe all the people downloading patch data from you?

 

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I need a new hobby . .
Ten level 85's (one of each class) in WoW
Back to try out the Feb patch in AC
Malachi256  1 star
Posts: 158
Registered: 2002-11-12 17:33:28
Arcilite_I posted:

Malachi256 posted:

My question is...

Why do my wife and I have substantially different numbers (our world latencies were over 50 apart) for these stats when our computers are literally sitting right next to each other and are both plugged in to the same router?



50ms isn't exactly 'substantially different'...



Lol you have a crush on me doncha.

edit: Just checked now and hers is at 288, mine is at 392, and yes Arcy I know I should just 'stfu' and 'I don't have a clue about how teh interwebz works.'

 

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Explorer / Soloer+Small groups / Some PvP
MMOin' since UO beta, still waiting for UO 2.0 done right
bewhatever
Posts: 13
Registered:
random blizz person posted:

Here are the most common causes of high pings/latency (on both Home and World):


1) Wireless

2) Packet loss

3) Almost-but-not-quite-broadband*

4) Addons (yes, those wonderful UI modifications)

5) Firewalls (some firewalls do interesting things to latency... try playing without it to see if it helps!)

5) Mis-configured or defective home routers (please temporarily bypass before anything else)

6) Quality of Service and Traffic Management Systems performing packet queuing of some sort.

7) Net link saturation (not necessarily your ISP, but somewhere between you and Blizzard)



ummm...latency also used to average in a large number for packet loss. That this reply doesn't mention the TCP protocol, what a TCP timeout is, how TCP uses dropped packets to slow down flows to match the most congested hop from Blizz to your computer, and why a single packet loss would impact one stream (world) but not the other (home), perhaps indicates a missing skill on the part of the author.


I personally think the whole reason logging into Ironforge at release, or even Dalaran a few months ago, was a lag fest was due to TCP packet loss because Blizz was dumping huge amounts of data from the world server my way *without* doing any shaping (they call it traffic management above). Suddenly sending a whole bunch of data virtually guarantees it will drop somewhere along the way. Oh, and when I added an SSD it got better, meaning that as this traffic came in my PC was going to disk to retrieve graphics to present, spending long enough doing so that it probably lost packets waiting for service in my PC's (motherboard) network interface. But I can't put a sniffer on my PC and look at the traffic to find out, because I agreed to the TOS.
Arcilite_I  4 stars
Title: VN's Most Wanted
Posts: 1,260
Registered: 2002-1-27 08:46:24
Malachi256 posted:

Arcilite_I posted:

Malachi256 posted:

My question is...

Why do my wife and I have substantially different numbers (our world latencies were over 50 apart) for these stats when our computers are literally sitting right next to each other and are both plugged in to the same router?



50ms isn't exactly 'substantially different'...



Lol you have a crush on me doncha.

edit: Just checked now and hers is at 288, mine is at 392, and yes Arcy I know I should just 'stfu' and 'I don't have a clue about how teh interwebz works.'



What can I say, you said two stupid things in one day. Given your post count, at least it doesn't happen often. As for not knowing about the interwebz, you said it I didn't.

 

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PvPing since 1977

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