On 2/16/24 10:20, Alexander Monakov wrote:
FWIW, in situations like these I always recommend to run perf with fixed
sampling rate, i.e. 'perf record -e cycles:P -c 10' or 'perf record -e
cycles/period=10/P' to make sample counts between runs of different
duration directly comparable (disp
On Thu, 15 Feb 2024, Richard Henderson wrote:
> On 2/15/24 13:37, Alexander Monakov wrote:
> > Ah, I guess you might be running at low perf_event_paranoid setting that
> > allows unprivileged sampling of kernel events? In our submissions the
> > percentage was for perf_event_paranoid=2, i.e. rel
On 2/15/24 13:37, Alexander Monakov wrote:
Ah, I guess you might be running at low perf_event_paranoid setting that
allows unprivileged sampling of kernel events? In our submissions the
percentage was for perf_event_paranoid=2, i.e. relative to Qemu only,
excluding kernel time under syscalls.
O
On Thu, 15 Feb 2024, Richard Henderson wrote:
> > Converting a 4.4 GiB Windows 10 image to qcow2. It was mentioned in v1 and
> > v2,
> > are you saying they did not reach your inbox?
> > https://lore.kernel.org/qemu-devel/20231013155856.21475-1-mmroma...@ispras.ru/
> > https://lore.kernel.org/qe
On 2/15/24 11:36, Alexander Monakov wrote:
On Thu, 15 Feb 2024, Richard Henderson wrote:
On 2/14/24 22:57, Alexander Monakov wrote:
On Wed, 14 Feb 2024, Richard Henderson wrote:
v3: https://patchew.org/QEMU/20240206204809.9859-1-amona...@ispras.ru/
Changes for v4:
- Keep separate >= 2
On Thu, 15 Feb 2024, Richard Henderson wrote:
> On 2/14/24 22:57, Alexander Monakov wrote:
> >
> > On Wed, 14 Feb 2024, Richard Henderson wrote:
> >
> >> v3: https://patchew.org/QEMU/20240206204809.9859-1-amona...@ispras.ru/
> >>
> >> Changes for v4:
> >>- Keep separate >= 256 entry point,
On 2/14/24 22:57, Alexander Monakov wrote:
On Wed, 14 Feb 2024, Richard Henderson wrote:
v3: https://patchew.org/QEMU/20240206204809.9859-1-amona...@ispras.ru/
Changes for v4:
- Keep separate >= 256 entry point, but only keep constant length
check inline. This allows the indirect fun
On Wed, 14 Feb 2024, Richard Henderson wrote:
> v3: https://patchew.org/QEMU/20240206204809.9859-1-amona...@ispras.ru/
>
> Changes for v4:
> - Keep separate >= 256 entry point, but only keep constant length
> check inline. This allows the indirect function call to be hidden
> and opt
v3: https://patchew.org/QEMU/20240206204809.9859-1-amona...@ispras.ru/
Changes for v4:
- Keep separate >= 256 entry point, but only keep constant length
check inline. This allows the indirect function call to be hidden
and optimized away when the pointer is constant.
- Split out a >=
