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We introduce a new measurement algorithm for the available band-width in a network path between two endhosts. This algorithm is an adaptation from existing active measurement methods for the purpose of being applied in inline network measurement. Inline network measurement method measures the available bandwidth by using packets which an active TCP(More)
We introduce a novel mechanism for actively measuring available bandwidth along a network path. Instead of adding probe traffic to the network, the new mechanism exploits data packets transmitted in a TCP connection (inline measurement). We first introduce a new bandwidth measurement algorithm that can perform measurement estimates quickly and continuously(More)
— In high-speed networks, such as 1-Gbps or higher networks, bandwidth measurement algorithms that utilize packet transmission/arrival intervals, such as packet trains and packet pairs, have a number of problems. First, network measurement for large bandwidth requires short packet transmission intervals, which causes a heavy load on the CPU. Second, network(More)
SUMMARY We previously proposed a new version of TCP, called Inline measurement TCP (ImTCP), in [2, 3]. The ImTCP sender adjusts the transmission intervals of data packets and then utilizes the arrival intervals of ACK packets for available bandwidth estimation. This type of active measurement is preferred because the obtained results are as accurate as(More)
— We previously proposed a new version of TCP, called Inline measurement TCP (ImTCP), in [1]. The ImTCP sender adjusts the transmission intervals of data packets and then utilizes the arrival intervals of ACK packets for available bandwidth estimation. This type of active measurement is preferred for TCP connections because the obtained results are as(More)
We introduce ImSystem, a distributed system that infers real-time information concerning the available bandwidth of all of the paths in the overlay networks, using a technique called inline network measurement. The key concept in ImSystem is that, when the overlay hosts transmit overlay traffic, they deploy the traffic to perform inline network measurements(More)
We have proposed a new TCP version, called ImTCP (Inline measurement TCP), in [1]. The ImTCP sender adjusts the transmission intervals of data packets, and then utilizes the arrival intervals of ACK packets for the available bandwidth estimation. This type of active measurement in a TCP connection (in-line measurement) is preferred because it delivers(More)
— We have proposed the concept of inline network measurement, which involves the concept of " plugging " an active bandwidth measurement into an active TCP connection. Mechanisms using this method have the advantage of requiring no extra traffic for measuring available bandwidth, whereas other active measurement tools cannot fundamentally avoid adding(More)
Finding optimal placement of virtual machines on numerous physical servers is one kind of bin-packing problem, which is known as an NP-hard. We propose the use of a heuristic algorithm to solve this problem where the virtual machines play the roles of personal desktops. As we have found out that the changes in the amount of hardware resources required by a(More)
We introduce an inline measurement method that can overcome difficulties in measurement task in high-speed network environment, such as short packet transmission intervals and Interrupt Coalescence function deployed in the high-speed Network Interface Cards. The method adjusts the number of packets involved in a packet burst of an active TCP connection, and(More)