188 results about "Performance tuning" patented technology

A file system may employ an enhanced or performance-adjusted allocation scheme when storing data to multiple storage devices. A file system may monitor one or more performance characteristics of storage devices. The file system may, in response to storage requests, select one or more of the storage devices for storing data associated storage requests based on differences among the respective monitored performance characteristics for the storage devices. Additionally, the file system may determine an allocation pattern for storing data to the storage devices and may modify the determined allocation pattern based on a detected change in the monitored performance characteristics of the storage devices. Further, the file system may store data based on both the allocation pattern and on data characteristics associated with a data storage request. The file system may also incorporate input specifying either new performance characteristics or a new allocation pattern.

Documents or document sets may be scored to reflect a value of an action, such as a selection for example, when an ad is served with the document (or a document belonging to a document set). A cost associated with the action with respect to an ad that was served with a document may then be adjusted using the score. For example, ad scores may be accepted or determined, and a document may be scored using the ad scores when served with the document and ad scores across a collection of documents to generate a document score. Each of the ad scores may indicate a value of an action with respect to an ad, such as a conversion rate, or a return on investment for an ad selection for example. Document scores used in this way may help advertisers get a more consistent cost per conversion, or return on investment, without requiring them to enter and manage various offers for various documents and / or various ad serving systems having various conversion rates or returns on investment.

An object of the present invention is to provide a storage system which is shared by a plurality of application programs, wherein optimum performance tuning for a cache memory can be performed for each of the individual application programs. The storage system of the present invention comprises a storage device which provides a plurality of logical volumes which can be accessed from a plurality of application programs, a controller for controlling input and output of data to and from the logical volumes in response to input / output requests from the plurality of application programs, and a cache memory for temporarily storing data input to and output from the logical volume, wherein the cache memory is logically divided into a plurality of partitions which are exclusively assigned to the plurality of logical volumes respectively.

The invention discloses a grinding and polishing pad for a cured grinding material based on thermal initiation curing and a preparation method thereof, applied to the fields of precise and super precise grinding and polishing processing. The grinding and polishing pad is characterized in that a grinding material layer (1) contains the following components in percent by mass: 1-40 percent of grinding material with the granularity of 50 nanometers to 40 micrometers, 10-60 percent of prepolymer of polyacrylic ester, 0.5-7 percent of free radical / anions / oxidation-deoxidation thermal initiating agent, 0-2 percent of grinding material surface modifying and dispersing agent, 0-5 percent of accelerator, 0-20 percent of performance tuning additive and 5-40 percent of activated thinner of esterified acrylic acid. The preparation method of the grinding and polishing pad comprises the following steps of: (1) sufficiently and uniformly mixing raw materials; (2) preparing a polishing pad mould and preparing an abrasive particle layer by mould pouring, heating and curing; and (3) bonding the grinding material layer with an elastic or (and) rigid layer by using a bonding agent according to requirements to obtain the grinding and polishing pad required by the invention. The grinding and polishing pad prepared by adopting a thermal initiation curing method has stable processing performance, high processing efficiency and functions of hydrophily and self-correction and is suitable for precise and super precise processing.

An apparatus and method for micro-tuning an effective clock frequency of a core in a microprocessor. The apparatus includes a microprocessor having at least one core with logic configured to transition between states, a clock signal coupled to the microprocessor, the clock signal having a predetermined clock frequency based on a worst-case clock frequency and a predetermined clock period. The apparatus further including at least one voltage drop sensor coupled to the core, the sensor being configured to generate an output signal for detecting a voltage drop in the core and to determine whether or not the output signal is detected within the clock period and, if the output signal is not detected, the sensor dynamically adjusts the clock period of the clock signal provided to the core to allow more time to complete state transitions, such that, dynamically adjusting the clock period effectively changes an effective core clock frequency.

A system, method, and program product is disclosed to monitor multiple applications, each application configured to process part of a TCP / IP-based transaction. The applications communicate with one another by way of a TCP / IP protocol. Each application is further configured to generate one or more events associated with the TCP / IP-based transaction. Each application has associated therewith an event management module configured to acquire and deliver event information associated with their respective events to an event bus, to minimize overhead in managing the events. A monitoring module communicates with the event bus to receive and organize the event information to provide an integrated end-to-end view of the TCP / IP-based transaction.

In a multi-user frequency domain spreading downlink MC-CDMA system, a group of sub-carriers can be replaced by an equivalent sub-carrier of a conventional OFDM modem for purposes of resource allocation to improve the system performance. The chips for a given user are spread only within the group. Confinement insures synchronization between different users' chips that is essential to the recovering and separation of user symbols at the receiver. There is no limit imposed on the group size, which permits different spreading code lengths to be used for different scenarios or for performance tuning.

An object of the present invention is to provide a storage system which is shared by a plurality of application programs, wherein optimum performance tuning for a cache memory can be performed for each of the individual application programs. The storage system of the present invention comprises a storage device which provides a plurality of logical volumes which can be accessed from a plurality of application programs, a controller for controlling input and output of data to and from the logical volumes in response to input / output requests from the plurality of application programs, and a cache memory for temporarily storing data input to and output from the logical volume, wherein the cache memory is logically divided into a plurality of partitions which are exclusively assigned to the plurality of logical volumes respectively.

A method, apparatus, and computer program product for monitoring the performance of a system. The mechanism of the present invention provides an interface in the form of a graphical user interface (GUI) to communicate multiple layers of system performance data to an operator. An operator monitors this display of information and uses it to determine how to adjust the system to optimize system performance. This mechanism of the present invention provides immediate feedback to an operator by displaying a trail of metric points, wherein the metric points indicate the status of system performance over a period of time. In this manner, the display mechanism of the present invention immediately conveys to an operator whether the system is operating within predefined margins, the results of performance adjustments made to the system, as well as predictions or trends for the system.

Techniques for capturing samples of session activity in a database are provided. Session activity for active sessions is recorded at certain times over a time period. Accordingly, a sample of session activity is taken for sessions in a database.