Hi,
With the following are the platform specifications:
OVS version: 1.4.0
traffic type: MTU size UDP packets @7000packets per second, generating
50,000 flows by changing UDP src Ports.
OS: Fedora release 12, Linux 2.6.31.5-127.fc12.i686.PAE
CPU: Intel Core i3 @ 2100 GHz
Controller: NOX, simple IP based switching application.
If I generate 50,000 flows in two chunks, for example, first I generate
traffic with src Port from 1 to 20,000 for few seconds then change the src
Port range to 20,001 to 50,000, I get the following warnings:
Jun 11 16:41:06|00019|dpif|WARN|system@br0: recv failed (No buffer space
available)
Jun 11 16:41:19|00020|dpif|WARN|system@br0: recv failed (No buffer space
available)
Jun 11 16:41:22|00021|dpif|WARN|system@br0: recv failed (No buffer space
available)
Jun 11 16:41:24|00022|dpif|WARN|system@br0: recv failed (No buffer space
available)
Following is the output of "ovs-dpctl show br0"
system@br0:
lookups: hit:491818 missed:603323 lost:116749
flows: 28559
Moreover, if I generate 50,000 flows in one go, without any pause, then I
do not get any error.
How to diagnose the problem? Has anyone else experienced such problem with
reactive flow writing?
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