Re: Performance hit in qemu-system-ppc

2020-01-29 Thread Howard Spoelstra
On Tue, Jan 28, 2020 at 7:30 PM Richard Henderson < richard.hender...@linaro.org> wrote: > On 1/25/20 3:30 PM, Howard Spoelstra wrote: > > I noticed a considerable (~20%) slowdown in the cpu performance of > qemu-system-ppc. > > ENOINFO. > > For what test case? This should not have been on any ho

Re: Performance hit in qemu-system-ppc

2020-01-28 Thread Richard Henderson
On 1/25/20 3:30 PM, Howard Spoelstra wrote: > I noticed a considerable (~20%) slowdown in the cpu performance of > qemu-system-ppc. ENOINFO. For what test case? This should not have been on any hot path. r~

Re: Performance hit in qemu-system-ppc

2020-01-28 Thread BALATON Zoltan
Hello, cc-ing the ppc list, maintainer and original author of the patch could increase the chances that they actually see your message which they might miss on qemu-devel. David explicitely said he usually cannot read all mails on qemu-devel so likely should be cc-d on all PPC issues (or also

Performance hit in qemu-system-ppc

2020-01-25 Thread Howard Spoelstra
Hi, I noticed a considerable (~20%) slowdown in the cpu performance of qemu-system-ppc. Bisecting led me to this commit: d03f140804b345a85973976506492027f703d82d is the first bad commit commit d03f140804b345a85973976506492027f703d82d Author: Richard Henderson Date: Mon Dec 9 13:49:58 2019 -08