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[SOLVED] high latency due to network and wireless adapters

This is a discussion on [SOLVED] high latency due to network and wireless adapters within the Networking Support forums, part of the Tech Support Forum category. Hi, my latency values are extremely high, sometimes millions(!) of microseconds. THe problem is always solved by disconnecting the 11b/g


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Old 09-07-2011, 05:05 PM   #1
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Hi,

my latency values are extremely high, sometimes millions(!) of microseconds. THe problem is always solved by disconnecting the 11b/g wireless LAN adapter, or the Intel(R) Gigabit Network connection. However, I can't work without internet. Please, help !!!

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Old 09-08-2011, 01:24 AM   #2
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How far away is your system from your router? Try moving closer.

Is this a constant problem or does it periodically spike?

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Old 09-08-2011, 10:09 AM   #3
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Hello,

I'm very close to the router. But it happens even when I connect the LAN cable and don't use the wireless at all.
Sometimes it's periodical (a few spikes ~1per minute), but at times I don't see anything but red bars. Then I go to device manager, disable the wireless and network adapters, and re-enable them. It helps for some time.

After some googleing I found that this problem seems to be quite common for Windows 7. I'm thinking of moving back to XP. It's a shame, though.
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Old 09-08-2011, 10:17 AM   #4
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Hi Parnisha1 and Welcome to TSF,

You shouldn't have to default back to an older operating system, we'll see what we can do about the issue! Are you sure that you're not connected to both the wireless and the wired network at the same time?

You say that it happens when you're not using the wireless, so does that mean your system is having lag-spikes generally? Or are the lag spikes just from internet usage?

Because if it's not from internet usage, it might be any of the driver being called that's causing it. You should visit your manufacturers website and download the latest driver for your network card.

Or you can see if it has any through Windows update:

Go to Start > Search > Type "devmgmt.msc" > Hit ENTER.
Right-click your network adapter > Properties.
Driver-tab > Press Update driver.
See if Windows update finds any.
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Old 09-08-2011, 10:25 AM   #5
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Hi,

I've updated all of my drivers, including the ones for the network card and wireless adapter.
The spikes happen:
1)when I'm using the wireless and not connected to LAN
2)when I'm connected to LAN, and turn the wireless off.
3)when I'm connected to LAN and wireless at the same time.

When I turn both wireless adapter and network card off (disable them in device manager), everything works wonderfully.
I've just looked at the latest latency data. My absolute maximum during the last 20 minutes was 1 995 816 443 microsecs. Almost 2 billions
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Old 09-08-2011, 10:27 AM   #6
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And what is the latency from? Playing any games? Browsing web pages?
Whole OS freezing?

We need to know exactly what your lag spikes affect, otherwise we can't proceed.
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Old 09-08-2011, 10:38 AM   #7
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They happen during normal work. Web browsing, watching movies, listening to music, etc.
Latency affects any sounds or music. That's how I found out about bad latency in the first place.
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Old 09-08-2011, 10:38 AM   #8
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Don't know whether it's relevant, but I wasn't able to install one of the essential Windows update: Windows 7 SP1. The system gives me the following errors: Code 800705AA, 8007371C
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Old 09-08-2011, 10:41 AM   #9
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Old 09-08-2011, 10:55 AM   #10
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Please go into the device manager again.
Go to the device > Properties.
Drivers-tab.

What date is the 'Driver date:' set to?
What network card are you using?

If you Disable the WLAN network connection (Network and sharing center > Manage network adapters) and only work on LAN, is that fine then?

Where are you seeing the latency check? And does the system freeze or just work slow?
Please also post your computer specification.

Also:

Try to boot into Safemode With networking (Press F8 during startup), and see if the problem persists there aswell.
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Old 09-08-2011, 11:11 AM   #11
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when I try to renew the driver, system tells that I've got the latest version.
wireless adapter (11b/g): 04.06.2010
Network card: Intel(R) 82567LM Gigabit Network connection: 07.04.2010
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Old 09-08-2011, 11:14 AM   #12
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yes, when I disable both of them, I don't get any latency problems. Disabling only one out of two usually helps, too.
My wifi is WEP-encypted.
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Old 09-08-2011, 11:15 AM   #13
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Please try the other things I asked for aswell!

More than that, that is not the latest driver.
The latest driver is from 2011.08.08, and it's found here.
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Old 09-08-2011, 11:25 AM   #14
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Computer: Lenovo X200
System: Windows 7 Home Premium x32
processor:intel core duo CPU P8600, 2.4GHz
RAM: 3GB

I use DPC latency checker V1.3.0. The system doesn't freeze, but works slow. Listening to music or watching movies is not an option with awful sound glitches.
Will try safe mode with networking, but somebody on this forum previously noticed that DPC Latency Checker won't be able to work in this mode.

Thanks for the driver, I just installed it. I wonder why Windows was telling me that I have the latest version, though.
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Old 09-08-2011, 12:57 PM   #15
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Windows lets you know if Windows Update can find any newer drivers, if it can't, it will assume that it is the latest one. Only way to be completely sure is to install from the manufacturers website.

Even if you cant use the latency checker, you should still be able to notice the lag spikes though.

Keep us posted on how it turns out!
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Old 09-08-2011, 02:04 PM   #16
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Anyways, I tried safe mode with networking: didn't notice any lags. But even in normal mode, lags are mostly noticeable while playing music.
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Old 09-08-2011, 04:02 PM   #17
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Hi, both Vista and Seven, improved the performance of the TCP/IP state, to take advantage you do need a modern router. While the tuning level has decreased over legacy OS's there is still some fine tuning that effects performance.

Go to start, search and type cmd, right click on the returned cmd.exe and select "run as administrator" at the prompt type:-

Code:
 netsh int tcp show global>0 & notepad 0
press enter

Post the notepad outcome here.
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Old 09-08-2011, 04:53 PM   #18
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after typing netsh int tcp show global>0 & notepad 0 in Commandprompt I receive the following message:
"The following command was not found: netsh int tcp show global>0 & notepad 0"
However, "netsh int tcp show global" command yields the following:

TCP Global parameters:
receive-side scaling state: enabled
Chimney offload state: automatic
NetDMA state: enabled
Direct cache access(DCA): disabled
Receive window auto-tuning level: normal
Add-on congestion control provider: none
ECN capability: disabled
RFC 1323 Timestamps: enabled
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Old 09-08-2011, 06:16 PM   #19
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Hi, you didn't indicate the age of your router? That command should have produced a notepad output wanted to see if you had a message about settings being effected by ## windows scaling heuristics.... if you didn't see this then OK.

Open cmd prompt as admin and run the three following commands pressing enter after each, these rely on a modem/router that is no older then 2 years. Will do no harm should improve your performance (can be undone).


Code:
netsh int tcp set global autotuninglevel=disabled

netsh int tcp set global congestionprovider=ctcp

netsh int tcp set global dca=enabled
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Old 09-09-2011, 08:44 AM   #20
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I got it working, this is the copied notepad file :
"
Querying active state...

TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State : enabled
Chimney Offload State : automatic
NetDMA State : enabled
Direct Cache Acess (DCA) : enabled
Receive Window Auto-Tuning Level : disabled
Add-On Congestion Control Provider : ctcp
ECN Capability : disabled
RFC 1323 Timestamps : enabled
** The above autotuninglevel setting is the result of Windows Scaling heuristics
overriding any local/policy configuration on at least one profile.
"

And I've run the other command as well. Bad latency continues.

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