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Thu, 20 Feb 2025 09:58:17 +0000 Received: from cloud238.thundercloud.uk (cloud238.thundercloud.uk [149.255.62.116]) by mailclean11.thundermail.uk (Postfix) with ESMTPS id 527701E000A for ; Thu, 20 Feb 2025 09:58:15 +0000 (GMT) Received: from rogueboard.localnet (230.3.169.217.in-addr.arpa [217.169.3.230]) (Authenticated sender: confabulate@kintzios.com) by cloud238.thundercloud.uk (Postfix) with ESMTPSA id D534E1039AA for ; Thu, 20 Feb 2025 09:58:13 +0000 (GMT) Authentication-Results: cloud238.thundercloud.uk; spf=pass (sender IP is 217.169.3.230) smtp.mailfrom=confabulate@kintzios.com smtp.helo=rogueboard.localnet Received-SPF: pass (cloud238.thundercloud.uk: connection is authenticated) From: Michael To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: problem formatting new 256 GB USB stick Date: Thu, 20 Feb 2025 09:58:14 +0000 Message-ID: <2360278.ElGaqSPkdT@rogueboard> In-Reply-To: References: <2720317.BddDVKsqQX@rogueboard> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply MIME-Version: 1.0 Content-Type: multipart/signed; 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R_SPF_ALLOW(0.00)[+mx]; HAS_REPLYTO(0.00)[confabulate@kintzios.com] X-Rspamd-Queue-Id: 527701E000A X-Archives-Salt: c60fe815-2ea0-43cd-b964-ccec857ab0c7 X-Archives-Hash: b59c8839d0ad00e349b23f96fb8d0ffc --nextPart4963078.GXAFRqVoOG Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8"; protected-headers="v1" From: Michael To: gentoo-user@lists.gentoo.org Reply-To: confabulate@kintzios.com Subject: Re: [gentoo-user] Re: problem formatting new 256 GB USB stick Date: Thu, 20 Feb 2025 09:58:14 +0000 Message-ID: <2360278.ElGaqSPkdT@rogueboard> In-Reply-To: MIME-Version: 1.0 On Wednesday 19 February 2025 12:10:59 Greenwich Mean Time Frank Steinmetzg= er=20 wrote: > Am Tue, Feb 18, 2025 at 11:53:48AM +0000 schrieb Michael: > > Once buffers are saturated write operations will settle at what the dev= ice > > can achieve. I have observed writes slow down when the empty space left > > is getting low. >=20 > Which buffer? Sticks don=E2=80=99t generally have one, let a lone an equi= valent to > an SSD=E2=80=99s SLC cache. I guess you mean the host=E2=80=99s cache? Yes. I'm talking about dumb USB sticks with no onboard DRAM. You can see= =20 initially a small duration upsurge in speed, before the data transfer settl= es=20 to steady state. After the command completes (cp , dd, etc.) and exits in = the=20 terminal, there is still data shown being transferred for some seconds unti= l=20 the buffer empties. When carrying out successive tests you have to empty the buffers to obtain= =20 accurate results. --nextPart4963078.GXAFRqVoOG Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part. 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