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Method to schedule network adapters based on temperature variations

IP.com Disclosure Number: IPCOM000198337D
Publication Date: 2010-Aug-05
Document File: 3 page(s) / 60K

Publishing Venue

The IP.com Prior Art Database

Abstract

Power management options in network card is a known feature wherein the network card is powered down when there is no activity on the network. In this proposal, the power/thermal conditions of the network cards is managed by shuffling them between the partitions to which they are associated with based on their usage patterns

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Method to schedule network adapters based on temperature variations

Disclosed is a system wherein the power/thermal management of network cards is managed by shuffling the network cards between partitions based on their usage patterns.

Power management options in network card is implemented by powering down the network card when there is no activity on the network. Once packets addressed to that device arrive, the card resumes its operation. In case of servers where there are multiple network cards available they are operated in two modes namely dedicated and shared. In dedicated mode, the network adapter is used by only one partition whereas in shared mode, the network adapter shall be used by one or more partitions. When there are two network cards and one of them is very heavily used and the other one is rarely used, the power management features embedded within those cards do not help in minimizing the thermal variations of these cards

Fig 1 depicts the network cards in shared mode configuration. Fig 2 depicts the network cards in dedicated mode configuration.

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Fig 1. Shared Ethernet Adapte

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     Fig2. Dedicated Network Adapters Consider the following scenario.

The system is in dedicated mode as shown in Fig 2. Partition 1 is I/O intensive while Partition 2 is processor intensive. The hypervisor keeps track...