104 results about "Performance guarantee" patented technology

A method and system for optimizing the performance of a storage system by classifying each client request for resources based on operational limits of the resources and controlling when to submit the request for processing based on service class. The operational limits are determined from performance characteristics of the system resources and from the level of performance guaranteed to each client. By regulating the clients' usage of resources using the resource operational limits, total system performance requirements and guarantees can be achieved.

Apparatus, systems and methods for service and/or business for coordinating tasks of performance management and application placement management in a dynamic fashion. An example process is dynamic in the face of fluctuations in the request load to the distributed computer system and the periodic adjustments to the placement of applications onto servers in said distributed computer system. There are two opposite functional flows in said process: a demand estimation function and a capacity adjustment function. The coordination system involves two subsystems: a demand estimator and a capacity adjuster, along with appropriate interfaces to of the performance manager and the application placement manager. This results in application placement process reacting quicker to demand fluctuations, performance guarantees are better met by rearranging the resources to be allocated to the various classes of service, and the management system works in an unsupervised mode, thus reducing manual administration costs and human errors.

The present system and associated method resolve the problem of providing statistical performance guarantees for applications generating streams of read/write accesses (I/Os) on a shared, potentially distributed storage system of finite resources, by initiating throttling whenever an I/O stream is receiving insufficient resources. The severity of throttling is determined in a dynamic, adaptive way at the storage subsystem level. Global, real-time knowledge about I/O streams is used to apply controls to guarantee quality of service to all I/O streams, providing dynamic control rather than reservation of bandwidth or other resources when an I/O stream is created that will always be applied to that I/O stream. The present system throttles at control points to distribute resources that are not co-located with the control point. A competition model is used with service time estimators in addition to estimated workload characteristics to determine which I/O needs to be throttled and the level of throttling required. A decision point issues throttling commands to enforcement points and selects which streams, and to what extent, need to be throttled.

A technique of allocating shared resources in a computer network-based storage system comprises taking periodic performance samples on a running storage system; evaluating an objective function that takes as input the performance samples to quantify how aligned a current state of the storage system is with organizational objectives; building and maintaining models of behavior and capabilities of the storage system by using the performance samples as input; determining how resources of the storage system should be allocated among client computers in the storage system by selecting one among many possible allocations based on predictions generated by the models in order to maximize a value of the objective function; calculating a confidence statistic value for a chosen resource allocation based on an accuracy of the models; and enforcing the chosen resource allocation on the running storage system when the confidence statistic value is at or above a predetermined threshold value.

The present invention relates to a system and methodology to facilitate I/O access to a computer storage medium in a predictable and efficient manner. A scheduling system is provided that mitigates the problem of providing differing levels of performance guarantees for disk I/O in view of varying levels of data access requirements. In one aspect, the scheduling system includes an algorithm or component that provides high performance I/O updates while maintaining high throughput to the disk in a bounded or determined manner. This is achieved by dynamically balancing considerations of I/O access time and latency with considerations of data scheduling requirements. Also, the system provides latency boundaries for multimedia applications as well as managing accesses for other applications.

Characters of the method are that client proxy software of parallelized file system on each front-end host implements supporting VFS access; server of metadata is in charge of executing increment scaling, transporting management and rate control i.e. operations so as to realize performance guarantee of front-end application in hierarchical storage system for mass data (HSSMD). According to performance, data servers are divided into fast data servers and slow data servers. Data server processes incremental scan command sent from metadata server, returns scanned information, and meanwhile executes file transfer command sent from metadata server. Based on condition of load, the method dispatches procedure of data transfer. Based on condition of remnant space (RS) of fast device, the method carries out degradation initiatively. The invention reduces influence on application in front end from transporting procedure, raises rate of RS of fast device, and enhances self management for HSSMD.

A method, apparatus and system for scheduling data packets in a wireless communications system. The invention includes determining a priority for at least one data packet, wherein determining the priority of the data packet is based at least on a plurality of quality of service factors, wherein each of the plurality of QoS factors has a corresponding weighting factor and the determined priority includes minimum-performance guarantees. The invention further includes scheduling transmission of the at least one data packet based at least on the determined priority.

A method and system for determining an energy-efficient operating point of the platform or system. The platform has logic to dynamically manage setting(s) of the processing cores and/or platform components in the platform to achieve maximum system energy efficiency. By using the characteristics of the workload and/or platform to determine the optimum settings of the platform, the logic of the platform facilitates performance guarantees of the platform while minimizing the energy consumption of the processor core and/or platform. The logic of the platform identifies opportunities to run the processing cores at higher performance levels which decreases the execution time of the workload and transitions the platform to a low-power system idle state after the completion of the execution of the workload. Since the execution time of the workload is reduced, the platform spends more time in the low-power system idle state and therefore the overall system energy consumption is reduced.

Device-wide performance guarantees may be implemented in a network element using a pull forwarding scheme by using separate proceses on the network element communicating via handshake signals to enable coordination between the aspects of the network element. One class of processes execute at the ingress queues, a second class of process execut at junction points, and a final class of processes execute at the egress ports. The combination of these separate processes leads to the correct scheduling of frames in a device-wide manner as if there were a centralized scheduler with complete information about all queued frames. As a result, the performance guarantees of the intended scheduling algorithm are preserved and are provided in a device-wide manner. The scheduling algorithms that are supported include round-robin, deficit round robin, negative deficit round robin, weighted round robin, and strict priority.

Turnkey maintenance of a customer's aircraft fleet is managed by a single management service provider (MSP) controlling integrated maintenance and materials services from a central operations site. The MSP converts data received directly from on-board aircraft systems into information it uses to manage maintenance service providers and parts suppliers. The MSP charges the customer a fee for the maintenance management service, based on several variables, including the number of flight hours the aircraft is in service over a period of time. The fee may be adjusted based on performance guarantees and incentives established between the MSP and the customer.

The invention discloses an information fusion method which has multiple targets and multiple sensors and is based on a convex optimization algorithm, and relates to an information fusion method of a combined navigation system of strapdown inertia, a GPS, an atmospheric data computer and a three-shaft magnetometer. Firstly, the information fusion method uses the speed and posture data of the atmospheric data computer and the three-shaft magnetometer for stabilizing an inertia navigation system, thus forming a combined internal navigation system of the strapdown inertia, the atmospheric data computer and the three-shaft magnetometer with high reliability and high independence; secondly, according to the optimal control idea of the modern control theory, the information fusion method uses the convex optimization algorithm for designing a robust multi-target filter for the fusion of high-precision position of the GPS and speed measurement information, thus forming an external system to implement the hybrid H2/H infinity/performance guarantee multi-target filtering on the internal system, thus improving the navigation precision of the whole system. The information fusion method completely exerts high reliability and usability of traditional navigation means and high precision of satellite navigation, and finally achieves the combined navigation technique with high reliability and high precision based on multiple sensors.

Data services are often provided with various performance guarantees. Multi-master architectures, in which multiple master servers are permitted to update a portion of the data set, may facilitate some performance requirements, but may also lead to data version conflicts in which different masters have written different versions of one or more data items. Moreover, conflicts involving different data items may have to be resolved using different conflict resolution techniques. Therefore, various data items of the data set may be associated with a conflict resolution technique selected from a conflict resolution technique set, such as manual conflict resolution; a write order policy, such as last writer wins; a conflict resolution logic; and conflict resolution based on data types. A data version conflict may be resolved by identifying and invoking the selected conflict resolution technique that is associated with the data item, and applying the conflict resolution outcome to the data item.

In a method and multi-queue packet scheduling system for managing network packet traffic, each of a plurality of output buffer queues is assigned with a reserved weight in bandwidth sharing of an output link, is associated with a respective service class, and may be optionally assigned with a maximum rate to constrain packet transmission therethrough. The output buffer queues are adapted for enqueueing incoming packets therein according to associated service classes of the incoming packets. A shared bandwidth rate calculator determines in real-time shared bandwidth rates of maximum-rate constrained backlogged output buffer queues with reference to the reserved weights and such that the shared bandwidth rates do not exceed the assigned maximum rates. A packet scheduler transmits outgoing packets from the backlogged output buffer queues in accordance with a schedule that is based on the shared bandwidth rates determined by the shared bandwidth rate calculator.

A method and apparatus for ranked join indices includes a solution providing performance guarantees for top-k join queries over two relations, when preprocessing to construct a ranked join index for a specific join condition is permitted. The concepts of ranking join indices presented herein are also applicable in the case of a single relation. In this case, the concepts herein provide a solution to the top-k selection problem with monotone linear functions, having guaranteed worst case search performance for the case of two ranked attributes and arbitrary preference vectors.

This invention provides an automated adaptive method for identity verification of claimants that attempt to get access into a resource by responding to a sequence of identifiers. The sequence has a specified maximal length and the identifiers are partitioned into multiple groups where identifiers in the same group are correlated and identifiers in different groups are not correlated. The method guarantees that an impostor will be accepted with a probability that does not exceed a specified parameter and that a legitimate claimant will be rejected with a probability that does not exceed a different specified parameter. The method also computes the probabilities that a legitimate claimant, or an impostor, will terminate an interrogation session with an inconclusive result, which would necessitate further manual interrogation. The method is adaptive as the conditional probabilities of an impostor's responses change throughout a session of interrogation.

The embodiment discloses a connection oriented packet network using an MPLS-type label switching technology. The network uses a very fast hardware-oriented self-routing protocol that can expose a path right-of-way and program a connection between a calling and called party at wire speed. The embodiment requires no provisioning and is well suited for mobile and ad-hoc networks. The system and method taught can be applied to other data networks where performance guarantees are important.

The invention discloses a method for preparing high-strength ionic lyogel. The method is as follows: a monomer, an initiator and a crosslinking agent are added into an ionic liquid for polymerization, and the high-strength ionic lyogel is obtained under the condition that the polymerization temperature is between 50 and 80 DEG C, the polymerization time is between 6 and 12 hours, the mass percent concentration of the monomer in the ionic liquid is between 5 and 30 percent, the amount of the initiator is 0.01 to 0.5 percent of the mass of the monomer, and the amount of the crosslinking agent is 0.1 to 1 percent of the mass of the monomer. The high-strength ionic lyogel prepared by the method can overcome the defects in the prior ionic liquid of low strength, frangibility, poor processability and deforming property and so on because the maximum compression stress of the high-strength ionic lyogel can reach 30 MPa, and becomes a nonaqueous medium material with high mechanical strength, good elasticity and no environmental condition limitation, so that performance guarantee is provided for actual large-scale application of the ionic lyogel in the fields of novel solar cells, lithium cells, super capacitors, artificial muscle, electrochromic devices and so on.

The invention discloses a method for producing a flaw detection and performance guaranteed Q235B steel plate with 80-100mm employing argon station steel. The produced steel plate of the specification comprises chemical components of 0.10-0.19% of C, 0.15-0.30% of Si, 0.50-0.80% of Mn, P no more than 0.023%, S no more than 0.015%, Als no more than 0.020% and N no more than 0.005%. The invention employs a 250mm continuous casting billet; and a production process flow comprises steps of: molten iron desulphurization, treatment in 120t top-bottom combined blown converter, continuous casting, casting blank insulation and slow cooling, rolled steel plate stack cooling, finishing, examination and warehouse entering. Compared with a prior art, the invention employs argon station steel to produce flaw detection guaranteed steel plate, cancels a routine LF refining production, shortens a production flow and reduces costs per ton of steel; meanwhile, a 250mm thickness section is adopted in the production to increase production rhythm and substantially reduce production costs, compared with a routine section thicker than 250mm or mold ingot.

The invention provides a coaxial 3D printing process and equipment, which are used for printing different coaxial fuse wires of inner and outer materials through coaxial nozzles. According to the process, the outer layer is a main use layer and determines the mechanical performance of a product; the inner layer for extruding wire materials is an assistant forming layer, the section of the extrudedouter layer annular material is prevented from collapsing; the assistant forming layer can be made of a material with relatively small relative volume density or a material which can be removed later; the outer layer is a performance guarantee layer, the section of a coaxial wire material can be similar to an annulus during performance analysis, and the strength of a product with an annular section is better than that of a product with a round section when the section areas are the same according to theoretically mechanic analysis, so that the strength of the product manufactured by the process and equipment under the situation that weight is not changed, and further light weight of 3D printing technology can be realized. The process and equipment can be used for optimizing product performance, such as fire-proof products, anticorrosive products and performance enhanced products to meet the requirement of different use conditions, so that the application range of 3D printed products can be expanded.

The invention discloses a dynamic performance guarantee electronic paper contract system based on a credit mechanism. The system comprises an electronic paper contract server, wherein on the basis ofa Linux operating system provided by the electronic paper contract server, a Docker container is run and the Docker container packages the electronic paper contract platform into a mirror image; a credit management module used for notifying the user who signs the contract according to the enterprise credit record during the contract signing process; a client end receiving the user operation and forwardingit to the electronic paper contract server via the contract interface management module, and receiving the link of the electronic paper contract platform sent by the electronic paper contractserver and jumping into the electronic paper contract platform; a contract management module, configured to generate a contract template corresponding to the user requirements on the electronic papercontract platform according to the user requirements, and sign the contract template; a CA Certificate Services module for encrypting data transmitted within the system.