Date: Mon, 25 May 2020 10:53:33 +0000 From: bugzilla-noreply@freebsd.org To: usb@FreeBSD.org Subject: [Bug 244356] Writing to a USB 3.0 stick is very slow Message-ID: <bug-244356-19105-alUDe5vz6V@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-244356-19105@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244356 --- Comment #86 from Olivier Certner <olivier.freebsd@free.fr> --- I did a new test on SD_128G with exFAT, after zeroing the whole stick, using `cp -af /usr`. I now get 23.1MiB/s globally, whereas in the previous test I reported 12.3MiB/s. Average bandwidth when not stalled is a bit better (53.3MiB/s vs. 48MiB/s previously). Stall duration was ~57% of the total test duration (vs ~74% before). So, this: 1. Confirms that zeroing the stick before writing indeed improves performance a lot: Bandwidth almost doubles for exFAT, which was also the case for UFS (see comment #75, 4.3 => 7.8MiB/s). 2. Confirms the wide gap between exFAT and UFS performance (almost 3x better bandwidth for exFAT) when compared in a (more) similar setting. -- You are receiving this mail because: You are the assignee for the bug.home | help
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