Currently I noticed there are about 15K open connections to localhost. It is mainly connecting to Memcached. I am clueless where I should start to optimize TCP/IP stack. Memcached support UDP, but the PHP library doesn't support it. The server has a lot of memory, about 7GB and it is dual core. Any pointers in how to optimize TCP / IP stack in

Optimizing TCP slow start TCP slow-start is an algorithm used by TCP to explore the amount of data that the network can transmit without causing congestion. Per RFC, the initial assumption about this is fairly pessimistic, and increasing this value lead to a snappier web experience, as more data can be send in the initial network packets. Jan 18, 2019 · Meaning it changes the MSS value of the TCP protocols inside the tunnel in a way that after UDP encryption/encapsulation the resulting UDP packet size (minues IP/UDP headers), would not exceed the mssfix value. So in an optimized link, mssfix is either disabled (set to 0) or it’s value would be the same as link-mtu ’s. TCP Accelerator is a clientless solution that accelerates the mobile Internet experience through optimal bandwidth utilization and TCP Optimization, providing subscribers with faster browsing and more immediate access to content. It does this by maximizing the efficiency of the transport layer in mobile data networks.

Optimizing TCP, by tuning the many available knobs, allows improvement of the overall performance of the protocol. We generally measure TCP performance using a few key metrics, namely: delivery speed (how many bits per second can be delivered) and overhead (retransmissions that account for duplicate data sent on our network).

Dec 03, 2017 · TCP Optimizer TCP Optimizer is a freeware program, which allows us to configure the TCP/IP settings. With its help, we can quickly and easily alter the advanced settings, without having to interfere manually in the Windows registry or to use a command line. The program is small, light, and portable - which means there is no need to install it. Apr 20, 2017 · The SG TCP Optimizer program is designed to easily apply most of the internet connection speed tweaks on this site using the Windows Registry, netsh commands, and PowerShell cmdlets (with version 4). When running the software under different versions of Windows, some of the settings may differ. Nagle's algorithm is used to optimize the data transfer by consolidating multiple small request bytes into a single TCP segment so that the ratio of header data to payload is more efficient. TCP headers take up 40 bytes, and there are plenty of applications that can emit a single byte of payload.

Apr 16, 2002 · Optimization techniques include using the zero-copy approach everywhere possible, proper packet assembling by TCP_CORK and equivalents, minimization of a number of packets transferred, and a

Oct 12, 2018 · The congestion window is the TCP stack’s estimate of the amount of data that needs to be in-flight on the network to fully utilize the connection. TCP_NOTSENT_LOWAT can be configured in code on a socket-by-socket basis if the web server software supports it or system-wide using the net.ipv4.tcp_notsent_lowat sysctl: • Number of concurrent TCP connections - Each SteelHead model can optimize a certain number of concurrent TCP connections. The number of TCP concurrent connections that you need for optimization depends on the number of users at your site, the applications that you use, and whether you want to optimize all applications or just a few of them. Jun 21, 2017 · The Citrix Optimizer is a Windows tool to help Citrix administrators optimize various components in their environment, most notably operating system with Virtual Delivery Agent (VDA). The tool is PowerShell based, but also includes a graphical UI. Citrix Optimizer can run in three different modes: