Evaluating Timestamping Accuracy for ASUS P5LD2-VM Motherboard with Intel NICs
نویسنده
چکیده
This technical report gives detail on the results obtained from testing of the ASUS P5LD2-VM Motherboard with Intel network interface cards (Intel 10/100 and Onboard Intel PRO/1000 PCI Express) for time stamping accuracy. The hardware is tested for the purposes of being a Flow Meter in our prototype ANGEL QoS architecture. A number of affecting factors have been investigated, including the link speed configuration, the use of an intermediate switch in end-to-end connection, and the employment of the interrupt moderation scheme in the on-board Intel NIC. The trade-offs between time stamping accuracy and CPU performance has been quantitatively evaluated. We also discuss the implications of the issues on measuring game traffic.
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