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2006 Jan 27
0
dom0 packet drops caused by domU cpu load
...ormance with 256 packet size: 53 MBit If I add now another virtual instance and kill all processes in this instance, performance stays around 50Mbit. However if I start only a simple bash loop with "while [ 1 ]; do sleep 3; echo hello world; done" performance drops to zero!! I got many rx_fifo_erros / rx_missed_errors (both same values), rx_errors and rx_dropped on the NIC. For me it seems Dom0 is unable to receive all packets proper from the NIC (e1000 is my case) if there is load in the virtual instances... I also tried xen3-unstable cvs version with overall better performance, however th...