Methods for detecting out-of-order sequencing during journal recovery and devices thereof

    公开(公告)号:US09934110B2

    公开(公告)日:2018-04-03

    申请号:US15145273

    申请日:2016-05-03

    申请人: NetApp, Inc.

    发明人: Joseph Brown

    摘要: A method, non-transitory computer readable medium and storage server computing device that allocates monotonically increasing sequence numbers to storage operations based on an order of the storage operations corresponding entries in a log. The storage operations are sequenced including by identifying a subset of the storage operations that are parallelizable. A file system data structure is allocated and populated with data associated with one of the storage operations. A determination is made when a rollback is detected based on whether a replay ledger index field of the file system data structure comprises one of the sequence numbers that is greater than another one of the sequence number corresponding to the one of the storage operations. The another one of the sequence numbers is inserted into the replay ledger index field, when the determining indicates that a rollback is not detected.

    Systems and methods for packet switching

    公开(公告)号:US09900267B2

    公开(公告)日:2018-02-20

    申请号:US15448635

    申请日:2017-03-03

    IPC分类号: H04L12/933 H04L1/00 H04L29/08

    摘要: A low latency packet switching system comprising a switching device and a processing device. The switching device may include a first plurality of input/output (I/O) ports and a second plurality of I/O ports, wherein each port of the first plurality of ports may be electrically coupled to a pluggable transceiver socket configured to receive a cable connector. The processing device may include a plurality of transceivers electrically coupled to the second plurality of ports. The switching device may be configured to receive a first electric signal encoding one or more incoming data packets. The switching device may be programmed to output the first electric signal to one or more ports, in accordance with a programmable port mapping scheme. The processing device may be configured to receive the first electric signal and to output a second electric signal encoding one or more modified data packets derived from the incoming data packets.

    Spectroscopic method for Alzheimer's disease diagnosis

    公开(公告)号:US09891108B2

    公开(公告)日:2018-02-13

    申请号:US14432873

    申请日:2013-10-02

    发明人: Igor K. Lednev

    摘要: The present invention relates to a method for detecting Alzheimer's disease in a subject. This method involves providing a sample from the subject, subjecting the sample to a spectroscopic analysis to produce a spectroscopic signature for the sample, determining whether the spectroscopic signature for the sample corresponds to an Alzheimer's disease spectroscopic signature, and identifying a subject as having Alzheimer's disease where the spectroscopic signature for the sample from that subject corresponds to the spectroscopic signature for Alzheimer's disease. Also disclosed is a method for monitoring Alzheimer's disease progression in a subject, involving providing a sample from a subject with Alzheimer's disease, subjecting the sample to a spectroscopic analysis to produce a spectroscopic signature for the sample, comparing the spectroscopic signature for the sample to a prior spectroscopic signature from the subject or to a spectroscopic signature standard for a specific stage of Alzheimer's disease, and determining the progression of Alzheimer's disease in the subject based on said comparing.