Tweaking dsl windows 7

Default time before reclaiming ports, if value is at 0xffffffff or not present in the registry is seconds. Just reducing the delay is often sufficient without changing MaxUserPort, as it allows for reusing ports more efficiently.

To query the current values, in command prompt, type: netsh int ipv4 show dynamicportrange tcp for UDP, use the same command, replacing only "tcp" with "udp" at the end.

Notes: By default, dynamic ports are allocated between ports and for a total of ephemeral ports. Using netsh allows to set both the starting port and port range. Editing the Registry allows for setting the port range, and the starting port is fixed at Deleting the MaxUserPort registry entry or setting it to a value outside the allowed range causes the OS to revert to using the default values.

Some system processes can install port filters to block certain port ranges. Each connection requires such control block, so this value determines how many active connections TCP can support simultaneously. Normally, TCP does not release a connection or reuse its resources until the connection has remained closed for a period of time specified by the value of the TcpTimedWaitDelay entry.

We recommend increasing it from the default if using network intensive applications that open many simultaneous connections, such as P2P. TCP stores control blocks in a hash table so it can find them very quickly. If you adjust the number of TCBs the system creates as specified by the value of MaxFreeTcbs , you should also adjust the value of the hash table proportionally.

Note this only has effect in the presence of running QoS applications that request priority traffic. Registry value is undocumented for the Vista version of Windows. To customize this setting, in the Windows Registry:. Recommended: 0 , possible values between 0 and - indicates the percentage value of reserved bandwidth for QoS applications.

Set to 0 to disable. In order to define DiffServ DSCP values, according to Microsoft the machine needs to have joined a domain, and interfaces have to see the domain controller. To overcome this limitation, so that you can tag DSCP values even for adapters that do not have access to a domain, use the following hidden registry key:. Notes: gpedit. This registry key may also be needed in systems with multiple network adapters present. When this happens, you can usually see the following error in the Event Viewer System log:.

Source: srv Event ID: Level: Error The server was unable to allocate from the system nonpaged pool because the server reached the configured limit for nonpaged pool allocations.

It is also possible to get an error indicating that: "Not enough server storage is available to process this command". To avoid those errors, you need to change the way Windows allocates memory for network services and file sharing. The below settings optimze the machine as a file server so it would allocate resources accordingly. There are two related registry settings:.

Note: Even though this tweak is from older Windows server OSes, it works on workstation versions, as well as Windows Vista and 7 32 and 64 bit. The tweak below allows for tweaking or disabling Nagle's alogrithm.

Disabling "nagling" allows for very small packets to be transferred immediately without delay. The dafault state Nagling enabled improves performance by allowing several small packets to be combined together into a single, larger packet for more efficient transmission. Keep in mind that disabling Nagle's algorithm may have some negative effect on file transfers, and can only help reduce delay in some games.

Find the correct one with your IP address listed. Setting not present by default. For gaming performance, recommended is 1 disable. For pure throughput and data streaming, you can experiment with values over 2. Wifi performance may see a slight improvement with disabled TcpAckFrequency as well. Note you can also set this to 1 to reduce the nagle effect from the default of ms without disabling it. The TCP Optimizer version 3.

More detailed information about all available options is provided in the online documentation , answers to frequently asked questions are available in the Optimizer FAQ , and personalized help is available through our broadband tweaking forum. It allows for tweaking all the above netsh settings and registry values in one simple step with the exception of the "gaming tweak" section.

The patch also provides for easily reverting the settings to their Windows default values. Click Y when prompted to apply settings. Note: If for some reason Windows renames the file and adds.

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Linksys Instant GigaDrive. Why encrypt your online traffic with VPN? Satellite Internet - What is it? Broadband Forums General Discussion Gallery. Console Gaming. Some of the more popular SG network tools are listed below:. If you are reading this then you are looking to maximize your bandwidth by tweaking your computers registry and other settings.

There are a few things you must know and understand prior to optimizing your connection. This information is usually found on your ISPs website. Our own Moderator here j79zlr made this page and it uses the proper formula for finding all you optimum registry settings.

Vista uses the largest possible packet size for the underlying network by default. Note: In some test environments, the correct MTU entry may be offset by 8. The 8 offset seems to coincide with the size of the PPPoE overhead. Check the result with the TCP Analyzer. Setting this seems to have no effect, since auto-tuning uses the TCP scale factor and changes it on the fly, disregarding this setting.

Additional testing may be required to determine it's effect if auto-tuning is turned off. Setting it to 1 is best for broadband connections. NetDMA enables support for advanced direct memory access. In essence, it provides the ability to more efficiently move network data by minimizing CPU usage.

Set to 1 to enable, 0 to disable NetDMA. Recommended setting is 1 if not using Chimney Offload , zero otherwise. More info available -here-. Theoretically, Widnows should automatically detect capable network hardware.

Experimental feature, not enabled by default - IPSec Encryption cyphers and message digests - provides encryption of packets at the hardware level. It is possible to edit receive-side scaling RSS in the Windows Registry, however, we recommend using the netsh command instead. TTL can be safely left alone in many cases. A number that's too small risks packets being discarded before reaching their destination. A number that's too large over will cause delay in when lost IP packets are discarded.

Recommended: Determines how many times unacknowledged data non-connect segment is retransmitted before TCP aborts the connection. The retransmission timeout is doubled with each successive retransmission on a connection. It is reset when responses resume. Note: When not present in the registry, the default behavior is retransmissions 5 in documentation.

When enabled, connections timeout sooner if SYN attack is detected. It may cause P2P and other programs that open a large number of connections to be somewhat limited in ramping up their transfers.

It is recommended to remove this limitation. Just check the below key and make sure it is either not present, or set to zero. Windows 7, and Windows Server SP2 or later should not have to make any changes. 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.

It is only recommended to change this setting in saturated Gigabit LAN environments, where you do not want to give priority to multimedia playback. Reportedly, disabling throttling by using ffffffff can also help reduce ping spikes in some online games. Default value is 10 under Windows 7, similar behavior if the setting is not present in the Registry. This setting, in combination with the above "NetworkThrottlingIndex" can help some games and video streaming. We recommend reducing the reserved CPU for background processes from the default.

See also: MSDN ms As with previous versions of Windows, one can improve DNS and hostname resolution by increasing the priority of of related services, while keeping their order. This is explained in more defail in our Host Resolution article. Lower numbers mean higher process priority. The corresponding registry settings in Vista are as follows:. The default Vista values have improved from previous Windows versions, and are usually sufficient under normal load.

However, in some instances under heavy load it it may be necessary to adjust the settings below to tweak the availability of user ports requested by an application. If the default limits are exceeded under heavy loads, the following error may be observed: "address in use: connect exception". By default under Vista when the values are not presend in the registry , the OS can allocate up to ephemeral ports above port , and the OS waits for seconds before reclaiming ports after an application closes the TCP connection.

This is a considerable improvement over older Windows versions. Recommended: leave at default, or use a number above up to decimal as necessary - maximum number of ports to use.

Recommended: 30 decimal, denoting 30 seconds - time to wait before reclaiming ports, in seconds. Default time before reclaiming ports, if value is at 0xffffffff or not present in the registry is seconds.

Just reducing the delay is often sufficient without changing MaxUserPort, as it allows for reusing ports more efficiently. To query the current values, in command prompt, type: netsh int ipv4 show dynamicportrange tcp for UDP, use the same command, replacing only "tcp" with "udp" at the end.

Notes: By default, dynamic ports are allocated between ports and for a total of ephemeral ports. Using netsh allows to set both the starting port and port range. Editing the Registry allows for setting the port range, and the starting port is fixed at Deleting the MaxUserPort registry entry or setting it to a value outside the allowed range causes the OS to revert to using the default values.

Some system processes can install port filters to block certain port ranges. Each connection requires such control block, so this value determines how many active connections TCP can support simultaneously. Normally, TCP does not release a connection or reuse its resources until the connection has remained closed for a period of time specified by the value of the TcpTimedWaitDelay entry.

We recommend increasing it from the default if using network intensive applications that open many simultaneous connections, such as P2P. TCP stores control blocks in a hash table so it can find them very quickly. If you adjust the number of TCBs the system creates as specified by the value of MaxFreeTcbs , you should also adjust the value of the hash table proportionally. Note this only has effect in the presence of running QoS applications that request priority traffic.