On 04/04/2021 17:46, jmario(a)redhat.com wrote:
Hi Loic:
A little more clarification, as I dug in deeper.
I was wrong on the cpu type. It is an Intel cpu.
But led me astray was the uname and the /proc/cmdline:
uname: Linux enough 5.10.0-5-amd64 #1 SMP Debian 5.10.24-1 (2021-03-19) x86_64
GNU/Linux
/proc/cmdline: BOOT_IMAGE=/vmlinuz-5.10.0-5-amd64 root=/dev/mapper/enough--vg-root ro
quiet
But looking at the lscpu, I do see it's an Intel cpu. (Sorry for not looking at that
first before sent my earlier reply.)
I'm relieved.
It appears the Debian amd64 kernel does not support the perf events needed for this.
Is it possible for you to run this on a recent CentOS-8 OS version?
Is there a
simple way to verify that the kernel has support for perf events ? I'd like to try
Ubuntu because it's been a while since I installed a
CentOS.
I also see the system you used is a small, desktop
level system with only 4 cpus (2 cores). If you can get a larger server, you should see
more contention, which would help with this effort.
Yes, once the tests are ready
I'll run them on an Intel server with
128 CPU :-)
Thanks,
Joe
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Loïc Dachary, Artisan Logiciel Libre