Messages in this thread | | | Date | Tue, 28 Feb 2023 16:51:49 +0800 | From | Leo Yan <> | Subject | Re: [PATCH v1 00/14] perf kvm: Support histograms and TUI mode |
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Hi Arnaldo,
On Mon, Feb 27, 2023 at 06:40:13PM -0300, Arnaldo Carvalho de Melo wrote:
[...]
> > And I verified the '--stdio' mode and confirmed it has the same result > > with before applying this series. > > Can you provide precise instructions for all the steps involved? from > 'perf kvm record', I'm trying here with a simple 'perf kvm record' and > then starting vm and having trouble.
Below are steps for verification this patch set.
In a terminal, I launch a KVM virtual machine with qemu command; I downloaded an Ubuntu iso file [1] ahead and used it as the file system image (or you could use any distro's iso file as file system image):
$ qemu-system-x86_64 -M pc -enable-kvm -cpu host -m 4096 -hda ubuntu-22.04-desktop-amd64.iso
Then in another terminal, I can use below commands to capture KVM trace data and report the result:
# cd linux/tools/perf # ./perf kvm stat record # ./perf kvm stat report => Output in TUI mode # ./perf kvm stat report --stdio => Output in stdio mode
Note, I have sent out the patch set v2 to fix a potential building failure in patch 13. Please work on the new patch set [2].
Thanks, Leo
[1] https://releases.ubuntu.com/22.04/ubuntu-22.04.2-desktop-amd64.iso [2] https://lore.kernel.org/lkml/20230228084147.106167-1-leo.yan@linaro.org/
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