How to use trim command ?,Re: How to use trim command ?

[Warner Losh]

On Sun, Dec 2, 2018 at 12:03 AM Poul-Henning Kamp <phk at phk.freebsd.dk>
wrote:

> --------
> In message <
> CANCZdfrb0gWAhSUAVvs0pBjezWgh3c_kHjriknC02KZF+MVE9A at mail.gmail.com>,
> Warner Losh writes:
>
> >Erase has become super expensive with QLC nand. And many SSDs are trying
> to
> >use simpler, smaller data structures to implement its LUTs.
>
> They may not have a choice, there are patent-issues in this space.
>
> Still, I would avoid any SSD which has issues in this space for normal
> filesystem operations.
>

Good advice, if you can afford the more expensive NAND... Cost reduction
efforts have lead me to try to make such NAND suck less.

Warner