Method and system for enforcing multiple rate limits with limited on-chip buffering
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United States of America Patent
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Sep 5, 2017
Grant Date -
N/A
app pub date -
Feb 26, 2015
filing date -
May 12, 2014
priority date (Note) -
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Abstract
The present application describes a system and method for rate limiting traffic of a virtual machine (VM). In this regard, a VM bypasses a hypervisor and enqueues a packet on an assigned transmission queue. Based on information contained in the packet, the NIC determines whether the packet is to be delayed or transmitted immediately. If the NIC determines that the packet is to be transmitted immediately, the packet is moved to one of a plurality of primary output queues to be transmitted to the external network. If the packet is to be delayed, the packet is moved to one of a plurality of rate limited secondary output queues. In this regard, the NIC classifies the packets, thereby improving performance by allowing high-rate flows to bypass the hypervisor.
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