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To: Warner Losh <imp@bsdimp.com>
cc: RW <rwmaillists@googlemail.com>,
 FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject: Re: How to use trim command ?,Re: How to use trim command ?
In-reply-to: <CANCZdfrb0gWAhSUAVvs0pBjezWgh3c_kHjriknC02KZF+MVE9A@mail.gmail.com>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
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--------
In message <CANCZdfrb0gWAhSUAVvs0pBjezWgh3c_kHjriknC02KZF+MVE9A@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.

-- =

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    =

Never attribute to malice what can adequately be explained by incompetence=
.