TC (all versions) and network performance (wifi) - again

[fleggy]

Hello, I still have a problem with poor network performance during parallel network operations. I compared simultaneous copying to a network disk and browsing the same disk in Explorer (browsing usable) with queue copy (F5, F2) and browsing in TC (not usable without speed limiter).
I think that TC has a problem to get the list of files from the network because it is almost impossible (for me) to browse the network disk in TC while copy to the same network disk in Explorer is in progress. When I start in such situation (Explorer is copying, TC is temporarily "frozen") another Explorer window then it works.

Please try this:
- open Explorer with network path containing at least 100 files
- open second Explorer with local disk
- select a few big files each about 100-200MB (about 1-1,5GB in total)
- copy those files to the first window
- open third Explorer with the same network path (maybe slow but usable)
- open the same network path in TC (should be very unresponsive)

How does it work on your wifi network?
BTW I have checked the option EXE/LNK not on net.

Thanks, Tomas

[HolgerK]

again and again and again and again and ...

- disable icon on net
- disable show overlay icons
- don't use custom column on net
- disable color by filetype (or limit the searches only for local drives)
- disable tooltips
- choose a different wlan channel (there may be a conflict with two stations using the same frequency band)
- optimize your wlan antenna (sometimes it helps to place a metal plate behind the antenna)

ultimate solution

Does it blend?

Kind regards
Holger

[fleggy]

Sorry, I can't use recommended ultimate solution on my toilet

But seriously:
- icons on net disabled
- overlay icons disabled
- color by filetype disabled
- tooltips disabled
- no channels conflict (I live in a small village)
- my router is 2 meters from me
result - no success

Why explorer windows are able to work during copy operation and TC not? Is anybody willing to try the scenario described in the first topic?

Thanks, Tomas

[MaxX]

2fleggy
May be, problem is in your router's config?
Looks like it's blocking too much requests from diffrent processes.

[HolgerK]

Sorry, I can't use recommended ultimate solution on my toilet

Water is an excellent absorber for wlan frequencies.

Why explorer windows are able to work during copy operation and TC not? Is anybody willing to try the scenario described in the first topic?

Tried it.
- Desktop Win7 ultimate x64 (basement)
- Fritz!Box 7170 (first floor)
- Laptop Vista home x86 (scnd. floor)
- copying a 2GByte file over wlan from desktop to laptop.

No big difference between Explorer and TC8.
Both are very slow while browsing the laptop share.
No wonder: wlan is never full duplex; increasing tcp windows will always enlarge the latency.

Beside of turning off auto tuning:

Code: Select all

netsh int tcp set global autotuninglevel=disabled

did you tried this too:

Code: Select all

netsh int tcp set heuristics wsh=disabled

http://www.speedguide.net/articles/windows-7-vista-2008-tweaks-2574

Regards
Holger

[fleggy]

@HolgerK
Yes, I set those netsh int tcp settings few months ago when I had problems with network stability.
I observed noticeable difference between copying/browsing in Explorer and TC. In my case browsing in TC is much more slower, as if no QoS is applied. Anyway thank you for your test.

@MaxX
I think that router setting is OK. All my wifi clients (4 NBs, 1 mobile) can work simultaneously with no problem. I have just problem with 2 (or more) network processes on one client.