Re: [Qemu-devel] Performance difference between QEMU 2.2.0 and 2.6.0

2017-03-08 Thread Wenwen Wang
Hi Peter, Thanks for your suggestions! Will test some newer versions. Best, Wenwen On Wed, Mar 8, 2017 at 2:42 PM, Peter Maydell wrote: > On 8 March 2017 at 18:17, Wenwen Wang wrote: > > I just found that there is a significant performance difference between > QEMU > > version 2.2.0 and 2.6.0

Re: [Qemu-devel] Performance difference between QEMU 2.2.0 and 2.6.0

2017-03-08 Thread Peter Maydell
On 8 March 2017 at 18:17, Wenwen Wang wrote: > I just found that there is a significant performance difference between QEMU > version 2.2.0 and 2.6.0. > > Here are the execution times of the benchmark 458.sjeng from SPEC CINT2006 > with test workload using user only emulation from ARM guest to x86

[Qemu-devel] Performance difference between QEMU 2.2.0 and 2.6.0

2017-03-08 Thread Wenwen Wang
Hello all, I just found that there is a significant performance difference between QEMU version 2.2.0 and 2.6.0. Here are the execution times of the benchmark 458.sjeng from SPEC CINT2006 with test workload using user only emulation from ARM guest to x86-32 host: qemu-2.2.0: 29 seconds qemu-2.6.