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post #31 of 38
Thread Starter 
Quote:
Originally Posted by DuDeInThEmOoN42 View Post
Routers create maybe 1ms of latency, would you mind running command prompt and typing "netsh int tcp show global" and copy what you see?

Sure, I never had this issue with my old router.

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\\Users\\Matt>netsh int tcp show global
Querying active state...

TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State : enabled
Chimney Offload State : automatic
NetDMA State : enabled
Direct Cache Acess (DCA) : disabled
Receive Window Auto-Tuning Level : disabled
Add-On Congestion Control Provider : ctcp
ECN Capability : disabled
RFC 1323 Timestamps : disabled
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post #32 of 38
Well it seems your TCP RWIN (receive window) is disabled. This limits the amount of received bandwidth to 64KB. Type "netsh int tcp set global autotuninglevel=normal" without quotes and see if that helps

then try this after "netsh int tcp set heuristics disabled" - this prevents windows from overriding your newly defined autotuning level

I would also try enabling DCA as it allows your processor's cache to be accessed more directly.
"netsh int tcp set global dca=enabled"

all of these commands can be reversed by reentering the value it was previously (e.g. dca=disabled instead of enabled). even if these don't make a difference in terms of your lag spikes, you should still change these settings. they do improve performance

do one more thing: verify the MTU of your network device is set to 1500, type "netsh interface ipv4 show subinterface" and verify that you see 1500 alongside your LAN
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post #33 of 38
Thread Starter 
Quote:
Originally Posted by DuDeInThEmOoN42 View Post
Well it seems your TCP RWIN (receive window) is disabled. This limits the amount of received bandwidth to 64KB. Type "netsh int tcp set global autotuninglevel=normal" without quotes and see if that helps

then try this after "netsh int tcp set heuristics disabled" - this prevents windows from overriding your newly defined autotuning level

I would also try enabling DCA as it allows your processor's cache to be accessed more directly.
"netsh int tcp set global dca=enabled"

all of these commands can be reversed by reentering the value it was previously (e.g. dca=disabled instead of enabled). even if these don't make a difference in terms of your lag spikes, you should still change these settings. they do improve performance

do one more thing: verify the MTU of your network device is set to 1500, type "netsh interface ipv4 show subinterface" and verify that you see 1500 alongside your LAN
Well, I'm on pppoe DSL, so shouldn't the MTU be 1492? Just like the MTU that is set inside the router config?
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post #34 of 38
I just installed a new modem (dsl) to solve some issues I have been having.

I have been talking to my DSL provider and they admitted everything look funny and promptly sent me a new modem, new wires, and the whole shebang.

I tested speeds and ping, they have instantly jumped back to where they are supposed to be.


Maybe you should see if your provider will send you a new modem.
     
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post #35 of 38
Thread Starter 
That's not the problem, I tested it without the router and I get no spikes.
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post #36 of 38
Quote:
Originally Posted by Metal425 View Post
Well, I'm on pppoe DSL, so shouldn't the MTU be 1492? Just like the MTU that is set inside the router config?
Oh, I didn't know you were using PPoE. In that case yes, it should be set to 1492

If nothing is working I would consider trying to flash firmware somehow or test with a replacement router
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post #37 of 38
Thread Starter 
Quote:
Originally Posted by DuDeInThEmOoN42 View Post
Oh, I didn't know you were using PPoE. In that case yes, it should be set to 1492

If nothing is working I would consider trying to flash firmware somehow or test with a replacement router

What about trying OEM firmware?

Hmm.. if I could find it.

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post #38 of 38
Quote:
Originally Posted by DuDeInThEmOoN42 View Post
Well it seems your TCP RWIN (receive window) is disabled. This limits the amount of received bandwidth to 64KB. Type "netsh int tcp set global autotuninglevel=normal" without quotes and see if that helps

then try this after "netsh int tcp set heuristics disabled" - this prevents windows from overriding your newly defined autotuning level

I would also try enabling DCA as it allows your processor's cache to be accessed more directly.
"netsh int tcp set global dca=enabled"

all of these commands can be reversed by reentering the value it was previously (e.g. dca=disabled instead of enabled). even if these don't make a difference in terms of your lag spikes, you should still change these settings. they do improve performance

do one more thing: verify the MTU of your network device is set to 1500, type "netsh interface ipv4 show subinterface" and verify that you see 1500 alongside your LAN
Awesome in depth post. OCN used to be like this a few years back.
    
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