Windows 7 Club

[EastCoasthandle]

Win7 Auto-tuning Feature

I've read some reports that Auto-tuning Feature in win7 is better then Vista. However, some still wish to disable this feature. I honestly don't know why one would do this as I'm not finding any real benefit for doing so.

Windows 7 and Vista include a "new & re-written" TCP stack that aims to take full advantage of hardware advances such as gigabit networking. Among the new features is Receive Window Auto-Tuning Level for TCP connections. TCP AutoTuning enables TCP window scaling by default and automatically tunes the TCP receive window size for each individual connection based on the bandwidth delay product (BDP) and the rate at which the application reads data from the connection, and no longer need to manually change TcpWindowSize registry key value which applies to all connection. Theoretically, with TCP auto-tuning, network connection throughput in should be improved for best performance and efficiency, without registry tweak or hack. However, this is not always the case, and may cause some Internet related issues and problems.

source
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netsh interface tcp show global
This shows the status check or current setting of TCP Auto-Tuning


netsh interface tcp set global autotuninglevel=disabled
This will disable auto-tuning


netsh interface tcp set global autotuninglevel=normal
This will enable auto-tuning


netsh interface tcp set global autotuninglevel=highlyrestricted
This will set the autotuninglevel to "Allow the receive window to grow beyond its default value, but do so very conservatively".

disabled: uses a fixed value for the tcp receive window. Limits it to 64KB (limited at 65535).
highlyrestricted: allows the receive window to grow beyond its default value, very conservatively
restricted: somewhat restricted growth of the tcp receive window beyond its default value
normal: default value, allows the receive window to grow to accommodate most conditions
experimental: allows the receive window to grow to accommodate extreme scenarios (not recommended, it can degrade performance in common scenarios, only intended for research purposes. It enables RWIN values of over 16 MB)

Notes:
- Reportedly, some older residential NAT routers with a SPI firewall may have problems with enabled tcp auto-tuning in it's "normal" state, resulting in slow speeds, packet loss, reduced network performance in general.
- auto-tuning also causes problems with really old routers that do not support TCP Windows scaling. See MSKB 935400
- netsh set commands take effect immediately after executing, there is no need to reboot.
- sometimes when using "normal" mode and long lasting connections (p2p software / torrents), tcp windows can get very large and consume too much resources, if you're experiencing problems try a more conservative (restricted) setting.

source

 

[digibucc]

finally bought my license I used the RC until expiry on 3 pcs soo... it was worth

Pro x64


anyone have any info on the connection teaming, load balancing whatever it's called. It worked automatically in beta but haven't had it working in a month or so.
basically i just plugged in a second connection and steam and download managers started using them both at the same time. then it stopped working and i have no idea why, and a fresh install didn't make a difference

 

[EastCoasthandle]

I'm sorry but I'm not sure what you are referring to.

 

[digibucc]

in windows 7 you can plug two different internet connections in and it will use them both, at the same time.

as long as you are doing something that makes use of parallel downloading. steam does, as well as download managers that make multiple connections to the server.

i have one 10Mb and one 6Mb connection and i plugged them both into my motherboard and steam started downloading at 1.7MB/s (16Mb)

as is i can manually make this happen. not in steam. but with my download manager i start a download, and then change the priority on the adapters and then start another download. it will use a different adapter for each. but this is a PitA - and windows DID do it automatically.

no one seems to know anything about it though, except the few of us who stumbled upon it (google it, a few other posts mention it) but no word from microsoft. asked in their forums and they didn't seem to know either!! two months later no response...

 

[EastCoasthandle]

I hope you find a solution.

Edit:
try this thread

 

[EastCoasthandle]

Windows 7 Tips OF THE DAY!!!

TIP 1

Fix it Center has gone BETA




TIP 2
Do you miss using "Open With" when you right click on something? Do you want to get that feature back? Well you can and it's easy to do.
1. Open up note pad
2. Input the following:
Windows Registry Editor Version 5.00

HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers\Open With]
@="{09799AFB-AD67-11d1-ABCD-00C04FC30936}"
3. Save this as Openwith.reg
4. Click on it. This will add a key to your regsitry. (there is no spaces in Open. Not sure why it's showing up that way).
5. You may need to log off and back in but I've not needed to do that.
Keep in mind that this is

not available when you right-click executable files (.cmd, .bat, .pif, .scf, .exe, .com, or .scr), or shortcuts to executable files.

source

 

[Wile E]

Thank you tremendously for that Open With context tip. I really, really missed that. I saved that reg key in my permanent app archive.

 

[kid41212003]

Mine was there since the start... and I didn't change anything ...

 

[Wile E]

Mine was there since the start... and I didn't change anything ...

It's only there for certain things. It's works differently than it did in Vista and earlier. Add this reg key, and you'll see the difference.

 

[kid41212003]

Just added, one that doesn't expand (it wasn't there before?), and one that does?

 

[Wile E]

Just added, one that doesn't expand (it wasn't there before?), and one that does?

Yeah. The non-expanding one behaves a little differently. Also saves you a popup on new file types.

 

[EastCoasthandle]

Win7 Tip o the DAY!!!! Today's Tip, enabling ICC for your monitor!

Now this is interesting...When I use Open With for a .gif (this is just one example) it also populates Paint and other applicable programs as an option to open the .gif without having to do any kind of search. This was implemented in Win7 but simply removed via registry key for some odd reason.
------------------------------

Onto today's tip of the DAY!!! I found this one perplexing because I didn't have this problem before when I installed Win7 for the 1st time. But it was on another disc so mileage will vary.

For whatever reason after installing Win7 if you want to continue using your old monitor's calibrated profile (ICC) it doesn't enable. Again, it did with another Win7 disc but not the one I used to reinstall Win7. If you are unable to get your profile to work you are not going to believe it but a simple check box is the cause of it. The problem is that is incredibly convoluted as to how you get to the check box. Here is what you do:

Click to open Color Management.
Click the Advanced tab, and click Change system defaults.
Click the Advanced tab again in the 2nd Color Management - System Defaults dialog box
To enable Windows to load display calibrations, select the check box for "Use Windows display calibration".
Click Close in the Color Management - System Defaults dialog box.
Click Close in the Color Management dialog box.

I found this tip in MSN forum from someone who got it from someone else.

 

[Dazzeerr]

Some of these tips are very useful and neat.

I'm loving Windows 7, especially how quick the search is. That's SO useful sometimes!

 

[F1reFly]

Heres a tip for gamers, in case it was never mentioned.

First leave pointer speed at default. this prevents skipping pixels and leaves whatever DPI your mouse is at to be the actual DPI with no pixel skipping.

Next, use this registry entry. Make a text file and copy/paste below, then save as .reg file

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Control Panel\Mouse]
"SmoothMouseXCurve"=hex:00,00,00,00,00,00,00,00,00,a0,00,00,00,00,00,00,00,40,\
01,00,00,00,00,00,00,80,02,00,00,00,00,00,00,00,05,00,00,00,00,00
"SmoothMouseYCurve"=hex:00,00,00,00,00,00,00,00,66,a6,02,00,00,00,00,00,cd,4c,\
05,00,00,00,00,00,a0,99,0a,00,00,00,00,00,38,33,15,00,00,00,00,00

 

[Wile E]

What does the reg key do?

 

[F1reFly]

What does the reg key do?

removes all mouse acceleration. when accel kicks in due to your mouse speed, its actually skipping pixels, regardless of your DPI. Although it will feel weird if your not used to it.

Typically, these settings are for gamers, those who have gaming mice and can increase their DPI. Like mine is 5600 dpi. There are some good articles out there in regards to this subject, but it is weird to change what your used to, i used to use mouse acceleration, took a few days to adjust but helps in multiplayer games.

edit: heres a decent explanation
http://www.overclock.net/computer-peripherals/173255-cs-s-mouse-optimization-guide.html

 

[Deleted member 67555]

subscribed for future issues that I don't yet have LOL

 

[Wile E]

removes all mouse acceleration. when accel kicks in due to your mouse speed, its actually skipping pixels, regardless of your DPI. Although it will feel weird if your not used to it.

Typically, these settings are for gamers, those who have gaming mice and can increase their DPI. Like mine is 5600 dpi. There are some good articles out there in regards to this subject, but it is weird to change what your used to, i used to use mouse acceleration, took a few days to adjust but helps in multiplayer games.

edit: heres a decent explanation
http://www.overclock.net/computer-peripherals/173255-cs-s-mouse-optimization-guide.html

I kinda figured. Just thought it might be a good idea to mention what the key does, so people know what they are doing to their reg.

 

[Boyfriend]

Thanks for useful mouse DPI tip. Using "Display color calibration", I can define my required color profile, but I have read somewhere that Windows 7 currently has some problem(s) with custom ICC profiles. Google

 

[Corduroy_Jr]

what os doesnt have its share of problems, the problem is hardware is coming out so fast the software side cant keep up

 

[digibucc]

ok problems problems...
not sure if this is specific to 7 or not, but i have not had it happen before (at this scale)

many programs that I use often (VLC, Dreamweaver, FlashFXP, and more) are not showing their icons.
all of the icons are on the desktop/start menu. but for example FlashFXP which is on/in both , neither shortcuts show the actual icon. they just show the white generic 3.1 style icon.
choosing a different icon from the executable doesn't work either. when i right click and go to properties, it shows the icon properly , and i can select different ones and it updates on this screen, but on the start menu/ desktop it does not.

even the actual program(not a shortcut), in program files , is not displaying it's icon.
this install of 7 x64 Pro is less than a week old...

please help!!

 

[Mussels]

heh, you broked it.


try using Ccleaner and wiping the thumbnail cache.

 

[digibucc]

heh, you broked it.

try using Ccleaner and wiping the thumbnail cache.

i know...
well, that worked! thanks!

i had to go in and change the icons to something else, and then back, but now they are right. and before changing them didn't make a difference.
I had googled it and deleted the thumbs.db files i saw, but must have not found the correct ones

thanks again!!

 

[EastCoasthandle]

I thought I saw a fix for that when you type in "Find and Fix problems with transparency and other visual effects" at the start prompt.

 

[AphexDreamer]

Heres a tip for gamers, in case it was never mentioned.

First leave pointer speed at default. this prevents skipping pixels and leaves whatever DPI your mouse is at to be the actual DPI with no pixel skipping.

Next, use this registry entry. Make a text file and copy/paste below, then save as .reg file

How can I undo this or return it to normal?