Hello, I am Pedro Mendez I am a master student from ETH Zurich, the reason that I am reaching you is because, right now I am doing some recording of the events happening during launching in a vm, using KVM + qemu, and for getting the events I am using the trace_pipe of the trace kernel tool utility with KVM, I already have events enable.
I am redirecting the output of the trace_pipe with “cat" to a file so I can the events from the launching, but when I see the size of the logs I am getting really incongruent results, sometimes I get a file of 45MB and when I launch again the vm and recording the events of the launching I end up with a file of 400K or 1.2MB. I don’t thinks this is normal, I wonder if I am not getting the event from the right place of if I should use another kernel tool for tracing the events, or do you know if this behaviour is expected to be normal. I hope you can tell me more about this or if you have seen this behaviour before. Thanks Cheers Pedro Mendez ***************************************** ETH Zürich Pedro Mendez Montejano Computer Science Master Student CAB F 88 Universitätstrasse 6 CH-8092 Zürich
