Tuesday, September 17, 2024

Re: softdep as well as noatime on each partition?

--
Ronny Machado C.
IT Consultant
HP-UX Certified Systems Administrator
Oracle Linux Certified Implementation Specialist
https://sysops.cl
+56 9 7519 9262

On Tue, Sep 17, 2024 at 12:32:08PM -0400, Geoff Steckel wrote:
> On 9/17/24 09:19, Ronny Machado wrote:
> > Hi list,
> >
> >
> > I've seen that kind of statement on any laptop install tutorial...but I
> > wonder (No benchmark done in any case). Is it really necesary on nvme
> > disks? One of my laptops has an nvme and it seems faster than others I
> > have with SSD...until I put softdep and noatime on fstab and
> > remount, again, this is a "perception" thing, no benchmark to back it up...
> > Could anyone advice on that issue? Are softdep and noatime necessary?
> As Mr. Hansteen said, softdep was removed versions ago.
>
> Noatime only matters when the CPU outruns the mass storage long enough
> for memory to fill with dirty inodes.
> Then the system seems to pause while they are pushed out to storage.
> Using a SSD and the large RAM in modern systems that rarely happens.
>
> Using rotating rust and (relatively) little RAM doing a grep through
> many thousands of small files it's not too hard to cause the situation.
>
> Softdep could fill RAM with dirty inodes pretty easily.
>
> geoff steckel
>
>
>
Thanks for your reply Geoff...what you said, makes me wonder if putting
those in my fstab is what has been causing that laptop random hang
ups...

R.

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