Drop your ping by 100-150 in 10 minutes

This topic has been posted a few different times on various forums and
sites, though I feel due to it's importance it really needs repeating.
Now patch 2.3.2 was supposed to eliminate the nagles algorithm, for me
it had no change, so I gave this solution a try and it worked great.



My ping which was in the 380-400 range (due to some network issues) dropped into the 200-250 range.



Warning...if
you aren't comfortable changing files in your registry you may just
want to wait for blizzard to create a working fix.



"1 -
TcpAckFrequency - NOTE if you are running Windows Vista this setting
may not have any effect - a hotfix is needed which i'm tracking down.
This works fine under Windows XP



Type "regedit" in windows "run.." dialog to bring up registry menu



Then find:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\



There
will be multiple NIC interfaces listed in there, find the one you use
to connect to the internet, there will be several interfaces listed
(they have long names like {7DBA6DCA-FFE8-4002-A28F-4D2B57AE8383}.
Click each one, the right one will have lots of settings in it and you
will see your machines IP address listed there somewhere. Right-click
in the right hand pane and add a new DWORD value, name it
TcpAckFrequency, then right click the entry and click Modify and assign
a value of 1.



You can change it back to 2 (default) at a later
stage if it affects your other TCP application performance. it tells
windows how many TCP packets to wait before sending ACK. if the value
is 1, windows will send ACK every time it receives a TCP package.



2 - TCPNoDelay

This one is pretty simple (Discussed here)



Type "regedit" in windows "run.." dialog to bring up registry menu



Then find:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSMQ\Parameters



Right-click
in the right hand pane and add a new DWORD value, name it TCPNoDelay,
then right click the entry and click Modify and assign a value of 1.



Click Ok and close the registry editor, then reboot your PC."



Basically,
this fix is deactivating the Nagle algorithm to improve your ping. If
you don't want to do it you can just wait for the 2.3.2 patch as it's
supposed to deactivate it too, but I don't think you can test it on
PTRs right now because the updated patch notes from the latest PTR
Build (7705) are actually for the upcoming build (7710).



Hotfix for Windows Vista Users:

http://www.snapfizzle.com/files/Windows6.0_KB935458_v2_x64.rar Vista 64

http://www.snapfizzle.com/files/Windows6.0_KB935458_v2_x86.rar Vista 32



Sources: mmo-champion, hunters forums (megatf)



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