With the amount of Vista issues on the forum, we are putting out a questionnaire here to get more information on the setups to get get a grasp of what is happening. Based on user feedback over the last several months, we've also updated the questionnaire with some possible solutions as well that you can easily try out.0) Updated to Windows Vista SP1? SP1 contains a number of network changes that improved overall throughput with the ReadyNAS.1) Tried changing MTU on ReadyNAS and laptop to 1492? Instructions on how to change Vista MTU at http://www.kitz.co.uk/adsl/vistaMTU.htm . A couple users had success keeping the ReadyNAS MTU at 1500 and switching Vista MTU to 1460.2) What model of Wireless Router and firmware is being used?3) What Wireless Card model and firmware being used?4) What connection speed are you seeing for Wireless Adapter (i.e. 54 Mbps)?5) What's the connection speed between ReadyNAS to Router (10/100/1000 Mbps) -- you can see this in FrontView's Network page.6) What's the throughput from Windows XP to ReadyNAS and Vista to ReadyNAS? Both Machines at or near same location?7) Whats the throughput from Windows XP to Vista?8) Does disabling firewall help? One user reported problem solved by disabling Symantec firewall.9) Does uninstalling anti-virus help? One user reported problem solved by uninstalling CA anti-virus.10) Does enabling jumbo frames work? Several folks reported problem solved by enabling jumbo frames, and this also had the effect of speeding up wired transfers.11) Are you able to try another router? A couple users reported replacing current router/switch solved the problem.Updated 3/4/2009 by yoh-dah.

Just give me a few days and I'll post it for you. In the meanwhile, can you give me a short instruction on which application to use for measuring speeds?Cheers,Wim

wimski99 wrote:Just give me a few days and I'll post it for you. In the meanwhile, can you give me a short instruction on which application to use for measuring speeds?Cheers,WimDrag & drop a large file and just measure the MB/sec throughput you get both ways. That should do it.

I don't normally post to these, but it looks to me that this isn't a throughput issue, but more likely some sort of a protocol issue. I happen to have an XP box running wirelessly though a linksys router to my NAS and a Vista box runing wirelessly to the same NAS via a DLINK router. The Xp seems to have very good performance. The Vista seems to have issues when trying to access the directory strucuture on the NAS. The download transfer rate is abou 2.6 Meg per second reguardless of the MTU settings. I don't have bonjour running on my NAS (not sure if that matters). If I change the MTU from 1500 to 1492 on both the Vista machine and the NAS, I get much better results.

Chewbacca wrote:1) Has MTU been changed to 1492 and running Windows Vista SP1Yes and Yes.2) Model of Wireless Router and Firmware used.D-Link DI-714P+ w/ firmware version 1.33 which is latest according to D-Link.3) Wireless Card Model and FirmwareIntel 4965AGN (Don't know how to check firmware on this thing.)4) Connection Speed that you are seeing for Wireless Adapter. (54Mbps/24Mbps) 11Mbps5) Connection Speed between ReadyNAS to Router (10/100/1000Mbps)100Mbps6) Throughput from Windows XP to ReadyNAS and Vista to ReadyNAS. Both Machines at or near same location. (Read/Write MB/sec)I don't have a Windows XP machine.IOMeter on Vista says: Read: 0.57 MBs per Second Write: 0.59 MBs per Second7) Throughput from Windows XP to Vista (Read/Write MB/sec)I don't have a Windows XP machine.8) If MTU settings were changed to 1492 on the NAS and SP1 is installed, Would like a Wireshark capture when transfering data from Vista to ReadyNASI have MTU set to 1492 and have installed SP1. I installed Wireshark and captured a transfer. How do I get it to you?My answers are embedded in your quote above.

sytThanks for the response.You can send the Log file here attn mehttp://www.readynas.com/forum/faq.php#H ... ll_logs%3FIs the Read/Write for Vista using Iometer or Drag and Drop?Thanks

Vista Wireless Performance Questionnaire

144 Replies

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Celts88

Aspirant

Mar 07, 2009

anhlai wrote:
Searching the Internet about Vista's generally slow network share access, this is all I did and wham, Vista is fast. Left my router/readynas settings alone.

Disabling Remote Differential Compression. To do this:
Open Control
Panel>Add Remove Programs>Turn off Windows features, uncheck Remote
Differential Compression.

Disable auto tuning:
From Command Promp, run as Administrator type: netsh int tcp set global autotuninglevel=disabled

anhlai wrote:
Searching the Internet about Vista's generally slow network share access, this is all I did and wham, Vista is fast. Left my router/readynas settings alone. Disabling Remote Differential Compression. To do this: Open Control Panel>Add Remove Programs>Turn off Windows features, uncheck Remote Differential Compression. Disable auto tuning: From Command Promp, run as Administrator type: netsh int tcp set global autotuninglevel=disabled

This may seem a silly question, but how do you run as Administrator. At the propmpt I keep getting C:\User\John and can't get out of this (Yes, my name is John)

anhlai
Aspirant
Mar 07, 2009
When you search for cmd.exe, and it appears, Right click on it and choose "Run as Administrator"
ohm62
Aspirant
Mar 12, 2009
I too suffer extremely poor performance & lockups when accessing ReadyNAS (X6 with latest firmware) shares wirelessly from a Lenovo Y510 laptop running Vista (through the ActionTech MI424WR router provided by Verizon FiOS)

Would this have to do with that:

http://www.netheaven.com/pmtu.html

?

dbott67

Guide

Mar 18, 2009

ohm62 wrote:
I too suffer extremely poor performance & lockups when accessing ReadyNAS (X6 with latest firmware) shares wirelessly from a Lenovo Y510 laptop running Vista (through the ActionTech MI424WR router provided by Verizon FiOS)

Would this have to do with that:

http://www.netheaven.com/pmtu.html

?

ohm62 wrote:
I too suffer extremely poor performance & lockups when accessing ReadyNAS (X6 with latest firmware) shares wirelessly from a Lenovo Y510 laptop running Vista (through the ActionTech MI424WR router provided by Verizon FiOS) Would this have to do with that: http://www.netheaven.com/pmtu.html ?

I just setup my old NV+ for my dad and the wireless performance was approaching dial-up speeds for local transfers. :shock:

Anyhow, I checked this FAQ:

faq.php#I%27m_getting_poor_performance_with_Windows_Vista._Is_there_anything_I_can_do%3F

My dad already had SP1 and the sidebar was not active (it may have been running, but it wasn't displaying), so the only option was to disable throttling, which I did. I also recalled some users had good results by changing the MTU on the NAS to 1492. Rather than do that, though, I changed to MTU on the laptop to 1430 as per this how-to:

http://www.kitz.co.uk/adsl/vistaMTU.htm

After that, wireless performance (and wired) performance as expected (2.5-3 MB/s for wireless; 8-10 MB/s for wireless).

The key commands to be run from an administrative command prompt are:

Display current interface information

netsh interface ipv4 show subinterfaces

Change settings for a specific interface

netsh interface ipv4 set subinterface "Wireless Network Connection" mtu=1430 store=persistent

Again, this information is taken directly from http://www.kitz.co.uk/adsl/vistaMTU.htm but reproduced here in case this post ever becomes unavailable.

Celts88
Aspirant
Mar 19, 2009
dbott67

Thanks for the info, but I still seem to be having issue with slow transfer at 850kB/sec

see below settings after change (wasn't sure how to do a screen shoot of the command prompt)

Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Windows\system32>netsh interface ipv4 show subinterfaces

MTU MediaSenseState Bytes In Bytes Out Interface
------ --------------- --------- --------- -------------
4294967295 1 0 393612 Loopback Pseudo-Interface 1
1500 1 9940076 2674830 Local Area Connection
1500 5 0 43296 Bluetooth Network Connection

C:\Windows\system32>netsh interface ipv4 set subinterface "Local Area Connection
" mtu=1430 store=persistent
Ok.

C:\Windows\system32>netsh interface ipv4 show subinterfaces

MTU MediaSenseState Bytes In Bytes Out Interface
------ --------------- --------- --------- -------------
4294967295 1 0 395061 Loopback Pseudo-Interface 1
1430 1 9944352 2681595 Local Area Connection
1500 5 0 43296 Bluetooth Network Connection

C:\Windows\system32>
dbott67
Guide
Mar 19, 2009
Go to Start > Programs > Accessories, find the Command Prompt and right-click it. Select "Run as Administrator" from the context menu:
Celts88
Aspirant
Mar 19, 2009
dbott67

Thanks for the info, but I still seem to be having issue with slow transfer at 850kB/sec

see below settings after change (wasn't sure how to do a screen shoot of the command prompt)

Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

C:\Windows\system32>netsh interface ipv4 show subinterfaces

MTU MediaSenseState Bytes In Bytes Out Interface
------ --------------- --------- --------- -------------
4294967295 1 0 393612 Loopback Pseudo-Interface 1
1500 1 9940076 2674830 Local Area Connection
1500 5 0 43296 Bluetooth Network Connection

C:\Windows\system32>netsh interface ipv4 set subinterface "Local Area Connection
" mtu=1430 store=persistent
Ok.

C:\Windows\system32>netsh interface ipv4 show subinterfaces

MTU MediaSenseState Bytes In Bytes Out Interface
------ --------------- --------- --------- -------------
4294967295 1 0 395061 Loopback Pseudo-Interface 1
1430 1 9944352 2681595 Local Area Connection
1500 5 0 43296 Bluetooth Network Connection

C:\Windows\system32>
dbott67
Guide
Mar 19, 2009
Your connection is wired, not wireless, so changing the MTU is likely not going to help (in this case), so you should reset it back to 1500.

Can you describe your network configuration please (make/model of router and/or switch, cabling, wired/wireless connections, # of computers/devices, NIC on PC, etc.)?

Also, can you describe what you're doing (i.e. drag & drop file from desktop to NAS & vice-versa using wired connection, etc)? I just need to be sure we're on the same page.

One of the first things I recommend is eliminating the network equipment as the culprit. Can you try a direct-connection?

faq.php#How_do_I_direct-connect_between_ReadyNAS_and_PC%2FMac%3F

Also, are you able to confirm expected throughput between your computer and other devices (such as another computer on the same network)? This will help narrow down our focus (helps us eliminate the cables, or your PC as the culprit)?

-Dave
gibxxi
Guide
Mar 22, 2009
For those wondering if things will improve with Windows 7...

I've been testing out the ReadyNAS Duo with Windows 7 - Build 7000 and now Build 7057. Performance to the ReadyNAS over CAT5e (Netgear DG834v2) is about what i'd expect for a 10/100mbps network.

With standard settings, access over homeplug v1.0 is slow, and wireless access (to a netbook with an Atheros chipset, and laptop with an Ralink RT61x chipset) is abysmal. In fact, the connection is frequently lost altogether, prompting Win7 to pop-up the "Try Again?" dialog.

Homeplug access has improved a bit from Windows 7 - 7000 to build 7057, but as a matter of course I changed auto-tuning to "restricted", enabled congestion monitoring (provider: ctcp) and side scaling on all computers connected to the router, either wirelessly or wired.

Changing the MTU of the ReadyNAS to 1492 helped the wireless connection, but only sporadically. Sometimes it works well, and I get between 1.75MB/s to 2.5MB/s other times I barely get 4K/sec. Size of the file(s) has a factor in determining the overall speed. And it's not cured the lost connection issue either.

I'm only using CIFS for local transfers.

Upgraded the SODIMM for a Crucial DDR333 CAS2.5 512MB module. It's not in the compatibility list, but the timings are within the reccomended spec for the ReadyNAS Duo. Can't remember the model number without pulling open the ReadyNAS again, but it's the only module Crucial do in that speed in SODIMM config (http://www.crucial.com/uk). It passed memory testing (5 sec power button hold) ok.
rdouven
Aspirant
Mar 30, 2009
Hi,

I've been working on this a bit as well... and I only seem to be able to get reasonable speeds as soon as I reduce the MTU on the NAS to 1492 as well.

I was wondering if anyone who is having this issue is also using a Wireless access point that supports only up to a MTU of 1500 and if the people who get it working on the NAS with an MTU of 1500 have Wireless access points that support packtet size above a MTU of 1500.

thanks in advance,

Robin

PS considering to replace my old trusworthy WRT54G access point as this only support a max MTU of 1500.

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Vista Wireless Performance Questionnaire

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