Re: [LSF/MM/BPF TOPIC] Measuring limits and enhancing buffered IO

Kent Overstreet
2024-02-27T17:20:15Z

On Tue, Feb 27, 2024 at 09:07:01AM -0800, Linus Torvalds wrote:
> On Tue, 27 Feb 2024 at 08:47, Kent Overstreet <kent.overstreet@linux.dev> wrote:
> >
> > Like I replied to willy - the "4k" was a typo from force of habit, I was
> > doing 64 byte random reads.
>
> Ok, can you send the exact fio command? I'll do some testing here too.
>
> Linus

fio \
--group_reporting \
--gtod_reduce=1 \
--norandommap \
--runtime=60s \
--exitall_on_error=1 \
--filename=/root/foo \
--name=read \
--rw=randread \
--loops=100 \
--numjobs=8 \
--filesize=1G \
--bs=64b \
--io_size=10G