摘要:
Techniques for upgrading and/or downgrading a data resource deployed on a machine from one version to another version are provided. An application component that defines the data resource may provide an up/down tool for use in changing the data resource component from one version to another version. The up/down tool comprises an up/down process and one or more version conversion rules. The up/down process utilizes the provided version conversion rules to determine the ability of the up/down tool to deploy the data resource and to actually deploy the data resource.
摘要:
Techniques for determining a complete address of a test point of an application from a relative address of the test point and a configuration of a system are provided. An application component that defines the application includes a relative address of the test point. An abstract configuration of a system specifies a location where an instance of the application is to be deployed within the system. The complete address of the test point is then formulated using the relative address of the test point and the indication of the location where an instance of the application is to be deployed within the system. The complete address of the test point can then be used to perform a health check of the instance of the application.
摘要:
Techniques for deploying, maintaining and configuring complex hardware and software systems are provided. An abstract configuration of the system describes the system's desired state. Each component of the system declares the general form of the resources it requires and an abstract representation of the versions of the services it both requires and provides. A configuration process uses the abstract configuration of the system and the descriptions of each of the components in the system to validate that the system can operate effectively, ensures that each component is in the correct state and at the right version, and generates the necessary interconnections for the application components to interoperate with each other.
摘要:
Techniques for deploying, maintaining and configuring complex hardware and software systems are provided. An abstract configuration of the system describes the system's desired state. Each component of the system declares the general form of the resources it requires and an abstract representation of the versions of the services it both requires and provides. A configuration process uses the abstract configuration of the system and the descriptions of each of the components in the system to validate that the system can operate effectively, ensures that each component is in the correct state and at the right version, and generates the necessary interconnections for the application components to interoperate with each other.
摘要:
Techniques for upgrading and/or downgrading a data resource deployed on a machine from one version to another version are provided. An application component that defines the data resource may provide an up/down tool for use in changing the data resource component from one version to another version. The up/down tool comprises an up/down process and one or more version conversion rules. The up/down process utilizes the provided version conversion rules to determine the ability of the up/down tool to deploy the data resource and to actually deploy the data resource.
摘要:
Techniques for determining a complete address of a test point of an application from a relative address of the test point and a configuration of a system are provided. An application component that defines the application includes a relative address of the test point. An abstract configuration of a system specifies a location where an instance of the application is to be deployed within the system. The complete address of the test point is then formulated using the relative address of the test point and the indication of the location where an instance of the application is to be deployed within the system. The complete address of the test point can then be used to perform a health check of the instance of the application.
摘要:
Embodiments are configured to provide communication features, including providing channel condition estimates for a communication path, such as packet loss, jitter, and/or available bandwidth, but are not so limited. In an embodiment, a method uses aspects of in-band data packets to provide channel condition estimates. In one embodiment, a system includes a bandwidth estimation component that operates to classify payload packets as part of performing capacity estimation and available bandwidth estimation operations.
摘要:
Architecture for enabling a communications endpoint to quickly recover from a packet loss, reducing duration of a signal dropout. A communications component sends a downlink of dependency-structured signals, such as audio and/or video signals using compressed frames between key frames. A multipoint control component (MCC) is located between the communications component and multiple endpoints, and distributes the downlink to the multiple endpoints. A frame caching component caches a key frame of the downlink. If a key frame is lost at one of the endpoints, the endpoint sends a packet loss report to the frame caching component. The key frame is resent from the frame caching component to the endpoint in response to the key frame loss. In this way, the frame caching component can respond to specific frame loss situations on any of the endpoints, without interfering with the performance on the other endpoints.
摘要:
Architecture for enhancing the compression (e.g., luma, chroma) of a video signal and improving the perceptual quality of the video compression schemes. The architecture operates to reshape the normal multimodal energy distribution of the input video signal to a new energy distribution. In the context of luma, the algorithm maps the black and white (or contrast) information of a picture to a new energy distribution. For example, the contrast can be enhanced in the middle range of the luma spectrum, thereby improving the contrast between a light foreground object and a dark background. At the same time, the algorithm reduces the bit-rate requirements at a particular quantization step size. The algorithm can be utilized also in post-processing to improve the quality of decoded video.
摘要:
An error correction system determines a level of error correction protection to apply to a frame of video data to be transmitted by a sending endpoint to a receiving endpoint based on the predicted impact of packet loss as well as the importance of the frame based on inter-frame dependencies, frame size, packet loss probability, historical packet loss pattern, central processing unit (CPU) load, and available network bandwidth. At the receiving endpoint, when packet loss is detected for a particular frame, the receiving endpoint will attempt to recover the frame using protection packets received along with the video data.