Stuart McLachlan
stuart at lexacorp.com.pg
Fri Mar 23 21:11:03 CDT 2012
Another one: http://www.speedguide.net/articles/windows-7-vista-2008-tweaks-2574 Network Throttling Index By default, Windows Vista/7 implements a network throttling mechanism to restrict the processing of non-multimedia network traffic to 10 packets per millisecond (a bit over 100 Mbits/second). The idea behind such throttling is that processing of network packets can be a resource-intensive task, and it may need to be throttled to give prioritized CPU access to multimedia programs. In some cases, such as Gigabit networks and some online games, for example, it may be benefitial to turn off such throttling all together. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile NetworkThrottlingIndex=ffffffff (DWORD, default: 10 hex, recommended: 10 hex for media sharing, ffffffff for gaming and max throughput, valid range: 1 through 70 decimal or ffffffff to completely disable throttling) -- Stuart On 24 Mar 2012 at 10:38, Stuart McLachlan wrote: > Hey John, > > Did you get to the bottom of this? I just came across a llink to a Hotfix that may be required. > > http://support.microsoft.com/default.aspx?scid=kb;EN-US;983528 > > The TCP receive window autotuning feature does not work correctly in Windows Server 2008 > R2 or in Windows 7 > ... > When you use the TCP receive window autotuning feature in a TCP connection, you notice > that the feature only works for a while and then stops working. Additionally, you experience > slow performance when a large amount of data is transferred over the connection. > ... > > -- > Stuart > > > > I have a network which consists of a set of three gigabit switches. When I transfer files between > > servers at either end I get 11 MByte / second transfer speeds. > > > > NOT good! > > > > Unfortunately I don't know how to troubleshoot this. I have simple a cable tester and the cables > > test OK, although that is truly only a connectivity test, not a test of the quality of the signal. > > > > I used to have a little program, a server on one end and a client on the other. The server would > > send stuff and then you could run the client on any other computer and see the network "quality" at > > the client end, wherever that might be. > > > > I can't remember what the program is and I am looking for something quick and easy. Of course > > nowadays everyone wants to test internet stuff. > > > > Does anyone know of a simple client / server kind of thing that allows me to install the server on > > one end and the client on my laptop and just walk around connecting my laptop to switches to try and > > determine where my problem might be? > > > > -- > > John W. Colby > > Colby Consulting > > > > Reality is what refuses to go away > > when you do not believe in it > > > > -- > > AccessD mailing list > > AccessD at databaseadvisors.com > > http://databaseadvisors.com/mailman/listinfo/accessd > > Website: http://www.databaseadvisors.com > > > > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com >