Intel Corporation

Eric W Multanen

Patrick L Connor

Robert O Sharp

Kenneth G Keels

John R Fastabend

Ygdal Naouri

Calin Gherghe

Robert G Gally

Per F Hansen

Devices and methods for debugging software or detecting malicious software on a compute node are described herein. A device can include an interface to a central processing unit (CPU) of a compute node. The device can include processing circuitry. During execution of a software application of the CPU, the processing circuitry can process CPU operational metrics received over the interface, wherein values of the CPU operational metrics vary with execution of the software application. Based on the values, the processing circuitry can determine an operational status of the software application and provide an indicator of an error condition of the software application responsive to detection of an error based on any criteria. Other embodiments are also described.

Software condition evaluation apparatus and methods

Methods, apparatus and software for implementing enhanced data center congestion management for non-TCP traffic. Non-congested transit latencies are determined for transmission of packets or Ethernet frames along paths between source and destination end-end-nodes when congestion along the paths is not present or minimal. Transit latencies are similarly measured along the same source-destination paths during ongoing operations during which traffic congestion may vary. Based on whether a difference between the transit latency for a packet or frame and the non-congested transit latency for the path exceeds a threshold, the path is marked as congested or not congested. A rate at which the non-TCP packets are transmitted along the path is then managed as function of a rate at which the path is marked as congested. In one implementation, non-TCP traffic is managed by mimicking a Data Center TCP technique, under which the congestion marking status of the path is substituted as an input to a DCTP algorithm in place of the normally-used ECN-Echo flag input. The congestion window output by the DCTCP algorithm is then used to manage the rate at which non-TCP packets to be forwarded via the path are transmitted from a source end-node.

Data center congestion management for non-TCP traffic

A method and system for providing a remote switching engine to monitor and control network traffic and utilizing appended word source address port mapping is provided. The system comprises a number of ports, at least one local switching device, at least one local forwarding database, and a remote switching processing device. The ports are provided for sending and receiving frames. The local switching device performs high-speed switching. The local forwarding database corresponds and couples to the local switching device, the database allowing the local switching device to look up a known address that has been previously obtained and forward the frames based on the known address. The remote switching processing device receives and processes frames from the local switching device(s). The local switching device(s) learns associations between Media Access Control (MAC) addresses and ports by having the local switching device forward unknown address frames to the remote switching processing device. The remote switching processing device update the local forwarding database corresponding to the local switching device based on the forwarded frames, utilizing the appended word source address mapping. The appended word of a frame transmitted from one switching device to another switching device has encoded within an ingress engine number and port number.

Distributed switch/router silicon engine

Growing community of inventors

Portland, OR, United States of America

Eric W Multanen