Le Mon, Jan 30, 2012 at 07:21:20PM +0200, Avi Kivity ecrivait : > > Start with top and vmstat to see if the cpu or I/O are the bottleneck with top at the kvm layer, the VM take 50% of CPU (the physical box have 16 real cores-not HT- : AMD Opteron 6134). one result of vmstat : procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 5 0 0 9904544 19612 195440 0 0 0 11 1 0 6 5 88 0 and I run it 1H and the result is always the same (just free result change time to time). > (also helpful to run the Windows performance monitor in the guest). If between the start of the function and the response, the are no performance pic or something like that in Windows. What we can see : o we start the function, o we see network communication with the database server during ~3/4s o after nothing during 10s before display the result David. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html