From nobody Tue Feb 3 14:43:01 2026 X-Original-To: freebsd-questions@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4f55nZ66ghz6PfNW for ; Tue, 03 Feb 2026 14:43:14 +0000 (UTC) (envelope-from freebsd-questions@m.gmane-mx.org) Received: from ciao.gmane.io (ciao.gmane.io [116.202.254.214]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4f55nY3HCJz3sRy for ; Tue, 03 Feb 2026 14:43:13 +0000 (UTC) (envelope-from freebsd-questions@m.gmane-mx.org) Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=gmail.com (policy=none); spf=pass (mx1.freebsd.org: domain of freebsd-questions@m.gmane-mx.org designates 116.202.254.214 as permitted sender) smtp.mailfrom=freebsd-questions@m.gmane-mx.org Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1vnHcP-0000Lf-SG for freebsd-questions@freebsd.org; Tue, 03 Feb 2026 15:43:05 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-questions@freebsd.org From: Anton Shepelev Subject: Re: external USB disk: 400MB/s transfer, but get only 40MB/s Date: Tue, 3 Feb 2026 17:43:01 +0300 Message-ID: <20260203174301.e4c0cef69c2ea7a2a9d62eba@gmail.com> References: List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-questions@freebsd.org Sender: owner-freebsd-questions@FreeBSD.org Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Newsreader: Sylpheed 3.7.0 (GTK+ 2.24.30; i686-pc-mingw32) X-Spamd-Result: default: False [2.91 / 15.00]; NEURAL_SPAM_LONG(1.00)[0.999]; NEURAL_SPAM_MEDIUM(1.00)[0.999]; MV_CASE(0.50)[]; FORGED_SENDER(0.30)[antontxt@gmail.com,freebsd-questions@m.gmane-mx.org]; R_SPF_ALLOW(-0.20)[+mx]; ONCE_RECEIVED(0.20)[]; NEURAL_SPAM_SHORT(0.11)[0.112]; MIME_GOOD(-0.10)[text/plain]; DMARC_POLICY_SOFTFAIL(0.10)[gmail.com : SPF not aligned (relaxed), No valid DKIM,none]; FREEMAIL_FROM(0.00)[gmail.com]; MISSING_XM_UA(0.00)[]; RCVD_COUNT_ONE(0.00)[1]; RCPT_COUNT_ONE(0.00)[1]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:116.202.0.0/16, country:DE]; MLMMJ_DEST(0.00)[freebsd-questions@freebsd.org]; R_DKIM_NA(0.00)[]; FROM_NEQ_ENVFROM(0.00)[antontxt@gmail.com,freebsd-questions@m.gmane-mx.org]; FROM_HAS_DN(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; TO_DN_NONE(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TAGGED_FROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[] X-Rspamd-Queue-Id: 4f55nY3HCJz3sRy X-Spamd-Bar: ++ Matthias Apitz: > The disk was always announced in /var/log/messages as > a 400.000MB/s transfers devices by the driver, but the > measured transfer was only between 40MB/s and 50MB/s. > The file system on the USB disks was NTFS. High-speed USB disks use a protocol different from that of typical USB sticks. Due to licensing (or other) problems, FreeBSD does not support that protocol. I too have a Kingston XS external USB drive that works at lightning speed in Windows, but is very slow in FreeBSD, and takes forever (about 30 seconds) to mount, during which time it decides to fallback to the generic removable-storate protocol. Test your disk in modern Windows and/or Linux.