Vmware, Inc.

Ashutosh Gupta

Gaurav Rastogi

Abhijeet Joglekar

Jonathan Zhanjun Yue

Prajval Bavi

Malhar Singh

Some embodiments of the invention provide a method for collecting metric values relating to operations of a set of one or more resources executing on host computers in a datacenter. In some embodiments, the method hierarchically collects and analyzes samples, with a first set of samples collected and analyzed in the data plane, and a second set of samples collected and analyzed in the control plane by aggregating the samples collected in the data plane. In some embodiments, the data plane includes host computers on which sample collecting engines (e.g., service engines) execute, while the control plane includes a set of one or more servers that obtains sample data collected by the host computers, and aggregates and analyzes this data.

Collecting samples hierarchically in a datacenter

Described are systems and methods for automatically generating, by a computing device, a regular expression that matches a list of input strings. A method includes identifying a set of baseline regular expression classes that match a portion of an input string of the list of input strings. The method further generates a current regular expression as a sequence of baseline regular expression classes from the set of baseline regular expression classes based on matching baseline regular expression classes to characters of a first input string of the list of input strings. The method further determines whether the current regular expression matches all input strings of the list of input strings, and if it does not, the method regenerates a portion of the current regular expression that occurs after an earliest character, in order, of one of the one or more input strings, that does not match the current regular expression.

Building a dynamic regular expression from sampled data

A custom metrics technique includes: accessing a packet; processing the packet using a packet processing pipeline of a service engine in a distributed network service platform, including: reaching a pre-specified point in the packet processing pipeline; inserting, in the packet processing pipeline, script code that corresponds to the pre-specified point; executing the script code to collect at least metric-related data associated with a user-specified metric object; and executing remaining packet processing pipeline.

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San Jose, CA, United States of America

Ashutosh Gupta