Re: [PATCH md-6.13] md: remove bitmap file support

[Dragan Milivojević]

On 13/11/2024 02:18, Yu Kuai wrote:
> > > ram0:            981MiB/s
> > > non-bitmap:        132MiB/s
> > > internal-bitmap:    95.5MiB/s
> > > >

> So, I waited for Paul to have a chance to give it a test for real disks,
> still, results are similar to above.

That is interesting. How are you running those tests?
I should try them on my hardware as well.

> You can see examples here:
>
> https://github.com/brendangregg/FlameGraph
>
> To be short, while test is running:
>
> perf record -a -g -- sleep 10
> perf script -i perf.data | ./stackcollapse-perf.pl | ./flamegraph.pl
>
> BTW, you said that you're using production environment, this will
> probably make it hard to analyze performance.

I may be able to move things around for the weekend, we will see.

Thanks
Dragan