On 10/19/20 3:44 PM, Owen Anderson wrote: > My use case is currently using QEMU 4.0, but we will be moving to QEMU > 4.2 soon. I do not have --enable-tcg-debug enabled. > e979972a6a1 does look promising, and like it might deliver increased > performance for our use case. It looks like the code in 4.0 is doing a > lot more work gathering the flags values from a variety of places.
Yes, before 4.2, we did a *lot* more work gathering flags, and the overhead you see roughly corresponds with what I saw. r~
