Re: Consistent core dump of fio 3.36

Hi,

On Mon, 3 Aug 2026 at 20:28, Patrick Goetz <[email protected]> wrote:
>
> Running this command:
>
> # fio --name=filecreate --directory=/data/fio-test \
>    --nrfiles=100000 --filesize=4k --rw=write --bs=4k \
>    --ioengine=sync --create_on_open=1 \
>    --openfiles=128 --numjobs=8 --group_reporting
>
> results in a consistent core dump:

<snip>

> smalloc: OOM. Consider using --alloc-size to increase the shared memory
> available.

<snip>

> Is there something wrong with my syntax?

I think your syntax is fine and at first glance it just looks like
you're asking for a lot of files. Did you try fio's suggestion to
tweak --alloc-size
(https://fio.readthedocs.io/en/latest/fio_doc.html#cmdoption-alloc-size
) to be bigger and if so what was the outcome?

-- 
Sitsofe