International Business Machines Corporation

Xiao Chen Huang

Mai Zeng

Wei Li

Hui Wang

Yu Mei Dai

Xiang Yu Xue

Peng Hui Jiang

Wei Liu

Hong Li

Bo Chen Zhu

Liang Xu

Xing Jun Zhou

Jing B J Ren

Kang Yong Ying

A method, computer system, and a computer program product are provided for managing an accelerated shutdown of a networked system having a having a plurality of nodes. The system to be shutdown is analyzed and a priority order is determined for the nodes. An interval period is also determined between each node according to the priority order. A leaf node set is constructed according to different shutdown types required for each node and a dependency tree is constructed by analyzing the leaf node sets. Each node is then shutdown according to the tree and the interval period determined. The dependency tree and the interval period is iteratively modified during the node shutdown until all nodes and ultimately the system shutdown has been completed.

Techniques for shutdown acceleration

Shutdown intervals between nodes of a dependency tree are determined. The dependency tree represents a system to be shut down and the nodes represent system components of the system. The determining the shutdown intervals includes calculating, for a pair of nodes of the dependency tree, a shutdown interval. The calculating is based on a relationship between the pair of nodes. The calculating is repeated for a plurality of pairs of nodes to obtain a plurality of shutdown intervals. The plurality of shutdown intervals is used in a shutdown of the system components. At least one system component represented by at least one node on a higher node level of the dependency tree is to be shut down prior to at least one other system component represented by at least one other node on a lower node level of the dependency tree.

System shutdown based on tuned shutdown intervals

A system and/or method that can reduce impact of network latency can be provided. Information associated with a user device participating in an online meeting can be determined, for user devices connecting to the online meeting. Based on the information, the user devices can be grouped. For each of the user devices in a group, network quality associated with network connection between a user device in the group and a server managing the online meeting can be evaluated. Based on the network quality, at least one user device in the group can be designated to operate as a sharer device to at least one other user device in the group. The sharer device can be caused to stream data directly from the server during the online meeting. That one other user device can be caused to connect with and stream data from the sharer device.

Network latency impact reduction

In an embodiment, a computer-implemented method comprises deploying a dual-active database on a first active database site and a second active database site. The first active database site comprises a first group of disks including a first sub-group of disks and a second sub-group of disks respectively corresponding to a third sub-group of disks and a fourth sub-group of disks included in a second group of disks in the second active database site. The method further comprises storing a first set of database logs on the first sub-group of disks while a second set of database logs is being written on the second sub-group of disks. Contents of the second set of database logs are consistent with contents of the first set of database logs and function as a duplication of the first set of database logs.

Dual-active database for data protection

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Beijing, China

Xiao Chen Huang