[Xen-devel] Throughput limits in network transmit

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

The development tree now contains support for limiting the network
transmission rate of individual virtual network interfaces (vif's).

The default is no rate limiting.

To set rate limiting for a vif, use:
 xi_vif_params <domain id> <vif idx> <credit bytes> <credit usec>
This allows the VIF to transmit <credit-bytes> bytes every
<credit-usec> microseconds.

To see the current limit for a vif, use:
 xi_vif_params <domain id> <vif idx>
This will display the current rate-limit parameters, and estimate
likely network throughput in Mbps (units == 2^20 bits per second).

TODO: Integrate this with xenctl. Currently, x_vif_params must be run
independently, after initialising a domain with xenctl.

 Hope this is useful,
 Keir


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