825 results about "Response time" patented technology

The present invention provides an apparatus and related methods for stabilizing a payload device such an imaging device. The methods and apparatus provide fast response time for posture adjustment of the payload device while reducing the energy used.

Provided is a method and system for monitoring and diagnosing the performance of remote method invocations using bytecode instrumentation in distributed multi-tier applications. The provided method and system involves automated instrumentation of client application bytecode and server application bytecode with sensors for measuring performance of remote method invocations and operations performed during remote method invocations. Performance information is captured for each remote method invocation separately, allowing performance diagnosis of multithreaded execution of remote method invocations, so that throughput and response time information are accurate even when other threads perform remote method invocations concurrently. This makes the present invention suitable for performance diagnosis of remote method invocations on systems under load, such as found in production and load-testing environments. The captured performance metrics include throughput and response time information of remote method invocation, object serialization, and transport. The performance metrics are captured per remote method invocation. The above performance metrics enable developers and administrators to optimize their programming code for performance. Performance metrics are preferably further sent to a processing unit for storage, analysis, and correlation.

A computer-based system and method utilizing a single response time monitor, located on a non-origin node of a public or private network, for measuring the total roundtrip response time of a set of requests resulting from an original request having embedded HTML frames. The response time monitor builds a relationship tree for the original request and its embedded HTML frames. For each request from the set of request resulting from the original request, including requests for the embedded HTML frames, the method uses the response time monitor to detect a start time and end time of each component of the request's roundtrip response time in order to calculate each component's duration. Later, the response time monitor calculates the total roundtrip response time by adding together the duration of all components of the original request and all its additional requests that have the same network address and port number.

The invention provides a method and a device for dynamic load balance of a server. The method for the dynamic load balance comprises the following steps of according to the information of an URL (uniform resource locator) application layer of a user request, classifying the received user requests, and sending to a corresponding queue; enabling different queues to correspond to different server clusters; collecting the response time of each node server, and calculating the current load weight of each node server according to the response time; adopting a weighted round method to distribute the user request of the corresponding queue to the node server of the corresponding cluster according to the current load weight. The method has the advantages that the disadvantages of the static load balance are overcome, the distribution is performed according to the load of the node server in real time, the same requests are distributed to the same servers according to the request content, the properties of various servers can be fully played, and the load is furthest balanced.

The invention provides a back source request processing method and device. The method comprise the steps that a back source request currently initiated by a node server is monitored; according to the history response time of each source server responding to a history back source request, the trend response time of each source server for a current back source request is predicted, wherein the history response time is acquired by the node server; according to the trend response time of each source server for the current back source request, a target source server which is used for receiving the current back source request is selected; and the current back source request is sent to the target server source. According to the back source request processing method and device, by taking full account of the current processing capability of a source server, a back source server is selected; the back source request response speed of the node server is ensured; and the user experience of a user is ensured.

A method and system for dynamically allocating cache space in a storage system among multiple workload classes each having a unique set of quality-of-service (QoS) requirements. The invention dynamically adapts the space allocated to each class depending upon the observed response time for each class and the observed temporal locality in each class. The dynamic allocation is achieved by maintaining a history of recently evicted pages for each class, determining a future cache size for the class based on the history and the QoS requirements where the future cache size might be different than a current cache size for the class, determining whether the QoS requirements for the class are being met, and adjusting the future cache size to maximize the number of classes in which the QoS requirements are met. The future cache sizes are increased for the classes whose QoS requirements are not met while they are decreased for those whose QoS requirements are met.

In an embodiment, an administrative computer system receives user login credentials from a user and makes at least one of the following determinations: that the user identifier does not match any existing user account, that the user identifier matches at least one existing user account, but that the user's account is in a locked state, or that the user identifier matches at least one existing user account, but the user's password does not match the user identifier. The administrative computer system then returns to the user the same response message regardless of which determination is made. The response indicates that the user's login credentials are invalid. The response also prevents the user from determining which of the credentials was invalid, as the response message is the same for each determination and is sent to the user after a measured response time that is the same for each determination.

Methods and apparatuses for reducing the response time along with increasing the probability of ranging of optical rangefinders that digitize the signal waveforms obtained from the pulse echoes returned from various types of objects to be ranged, the pulse echoes being too weak to allow successful ranging from a single waveform or the objects being possibly in motion during the capture of the pulse echoes. In a first embodiment of the invention, the response time at close range of a digital optical rangefinder is reduced by using a signal averaging process wherein the number of data to be averaged varies with the distance according to a predetermined function. In a second embodiment of the invention, the probability of ranging objects in motion along the line of sight of a digital optical rangefinder is increased and the object velocity measured by performing a range shift of each acquired signal waveform prior to averaging. In a third embodiment of the invention, the signal waveforms acquired in the line of sight of a digital optical rangefinder are scanned over a predetermined zone and range shifted and averaged to allow for early detection and ranging of objects that enter in the zone.

A system and method for effectively scheduling read and write operations among a plurality of solid-state storage devices. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array comprises an I / O scheduler. The characteristics of corresponding storage devices are used to schedule I / O requests to the storage devices in order to maintain relatively consistent response times at predicted times. In order to reduce a likelihood of unscheduled behaviors of the storage devices, the storage controller is configured to schedule proactive operations on the storage devices that will reduce a number of occurrences of unscheduled behaviors.

A messaging system and method with dead man switching providing for hierarchical delivery of messages based on selected message hierarchy levels with controlled delivery / response timing is disclosed. The system and method incorporates a messaging host that communicates with a messaging source client that creates and prioritizes a message and targets address(es) for the message. This message is then transmitted to the target address(es) using a hierarchical transmission thread having set limits on response times for each address within the thread. Reception of the message by each target(s) produces visual and / or auditory notification at the target(s). Messages are automatically forwarded to remaining target(s) within the thread upon expiration of a timer should the target(s) fail to respond to the message within a predetermined time. Failure of the target(s) to respond to the message(s) is reported bi-directionally along the thread and forwarded to remaining target(s) in the thread.

Anomalous behavior in a distributed system is automatically detected. Metrics are gathered for transactions, subsystems and / or components of the subsystems. The metrics can identify response times, error counts and / or CPU loads, for instance. Baseline metrics and associated deviation ranges are automatically determined and can be periodically updated. Metrics from specific transactions are compared to the baseline metrics to determine if an anomaly has occurred. A drill down approach can be used so that metrics for a subsystem are not examined unless the metrics for an associated transaction indicate an anomaly. Further, metrics for a component, application which includes one or more components, or process which includes one or more applications, are not examined unless the metrics for an associated subsystem indicate an anomaly. Multiple subsystems can report the metrics to a central manager, which can correlate the metrics to transactions using transaction identifiers or other transaction context data.

A secure method, apparatus or computer program incorporates a method for entering private information such as a user identifier, password or other secret code comprising at least one symbol or character. According to method in one illustrated embodiment, the user selects characters for input starting from presentation of an initial suggested character, moving under user control to presentation of a user's desired input character, and then followed by the selection by the user of that presented character as a character for data input. The method includes randomizing the timing of the display and / or reaction time to user input so that the number and timing of the key presses required to select any specific desired character for input is made unpredictable. This makes it difficult during entry of information to determine by covert means what specific information is being entered.

A system and method for improving the response time of text-to-speech synthesis utilizes “triphone contexts” (i.e., triplets comprising a central phoneme and its immediate context) as the basic unit, instead of performing phoneme-by-phoneme synthesis. The method comprises a method of generating a triphone preselection cost database for use in speech synthesis, the method comprising 1) selecting a triphone sequence u1-u2-u3, 2) calculating a preselection cost for each 5-phoneme sequence ua-u1-u2-u3-ub, where u2 is allowed to match any identically labeled phoneme in a database and the units ua and ub vary over the entire phoneme universe and 3) storing a group of the selected triphone sequences exhibiting the lowest costs in a triphone preselection cost database.