摘要:
A portable tracing utility provides trace configuration, trace instrumentation and trace management functionality for single or multithreaded programs. Through various application programming interfaces (“APIs”) of the tracing utility, a client may control tracing behavior to setup in-memory data structures for storing trace records that record the program's history of execution or to alter the granularity of execution history being traced. The trace behavior can be modified during the life of a program by using the APIs, either dynamically when the program assumes certain states, or through remote procedure calls issued by, for example, an external interface. Programs are instrumented with these APIs to record the history of execution, which during execution of the program is stored in circular in-memory buffers.
摘要:
The present invention provides a method and mechanism for debugging a series of related events within a computer system. According to an embodiment, when tracing a series of related events that span across a plurality of threads, a token may be passed from one thread to another, thereby allowing a link between the threads to be marked within the one or more traces. The token may be passed via a messaging API, such as a network layer API or a shared resource. With this aspect of the invention, sufficient information will be provided within the one or more traces to allow all the related trace data to be linked together.
摘要:
A computer implemented CPU utilization prediction technique is provided. CPU utilization prediction is implemented described in continuous time as an auto-regressive process of the first order. The technique used the inherent autocorrelation between successive CPU measurements. A specific auto-regression equation for predicting CPU utilization is provided. CPU utilization prediction is used in a computer cluster environment. In an implementation, CPU utilization percentage values are used by a scheduler service to manage workload or the distribution of requests over a vast number of CPUs.
摘要:
Techniques used in a relational database system for defining subclasses of built-in classes and thereby achieving columns in database tables which contain polymorphic objects of the built-in classes. The methods for the subclasses are contained in named packages. A table in the database system's schema relates the package name to a storage location managed by the relational database system that contains the compiled code for the package. When a method from the package is invoked, a dynamic linker uses the name and the table to locate the compiled code and then executes the compiled code. One thing that can be done with subclasses is to use a database system to automatically connect a Web user with a server of streaming data. The connection thus established is made by the server of streaming data to the Web user and thus bypasses the database system.
摘要:
A waveform generator for providing an analog output signal to a target device includes a look-up-table (LUT) that stores a plurality of binary address values and a digital-to-analog converter (DAC) that generates the analog output signal. The waveform generator receives an input trigger signal from the target device when the target device is ready to receive the analog output signal. The waveform generator generates a synchronized input trigger signal and aligns the analog output signal with the synchronized input trigger signal by reloading the LUT with a binary address value of zero.
摘要:
There is disclosed a system and method for implementing a control plane/data plane test to evaluate the performance of a device under test upon the occurrence of a critical event. The method may be performed by a network testing system.
摘要:
Apparatus, methods, and computer program products are disclosed that present a delegated-right to a delegation system by a service-application provisioned with the delegation system. The delegated-right enables the service-application to perform an operation/access on behalf of a delegator-user. The method then attempts to perform the operation/access.
摘要:
This disclosure features a persistent phosphor having the following formula I: Sra,Cab,BacAl2-m-n-o-pOd:Euy,REz,Bm,Znn,Coo,Scp I where a and b each range from about 0.3 to about 0.7; c is between about 0 and about 0.1; 0.75≦a+b+c+y+z≦1.3; y is between about 0.0005 and about 0.1; RE is any rare earth element alone or in combination; z is between about 0.0005 and about 0.15; m is between about 0.0005 and about 0.30; n is between about 0 and about 0.10; o is between about 0 and about 0.01; p is between about 0 and about 0.10 and d ranges from about 3.945 to about 4.075. Once the persistent phosphor has been excited it appears white in an absence of ambient light. Also featured is an article of manufacture that includes the phosphor.
摘要翻译:本公开的特征在于具有以下式I的持久性荧光体:Sra,Cab,BacAl2-m-n-o-pOd:Euy,REz,Bm,Znn,Coo,ScpI,其中a和b各自为约0.3至约0.7; c在约0和约0.1之间; 0.75 @ a + b + c + y + z @ 1.3; y在约0.0005和约0.1之间; RE是单独或组合的任何稀土元素; z在约0.0005和约0.15之间; m在约0.0005和约0.30之间; n在约0和约0.10之间; o为约0至约0.01; p为约0至约0.10,d为约3.945至约4.075。 一旦持续的荧光体被激发,它在没有环境光的情况下看起来是白色的。 还有一个包括磷光体的制品。
摘要:
There is disclosed a system and method for network test conflict checking. The method may be performed by a network testing system and may be implemented as software. The method may include receiving user selected test features and user selected hardware for a network test. When receiving user selected features, incompatible features are made unselectable by reference to a feature database. A compatibility check is performed by referring to a hardware database and a feature database. Suggestive corrective changes may be provided to a user or automatically made to the selected features and/or selected hardware. The network test is written to hardware when the compatibility test is successful.
摘要:
The invention relates to the use of steam cracked tar with the bottoms product of a flash drum integrated with a pyrolysis furnace. In embodiments, the steam cracked tar is added to fuel oil.