From owner-freebsd-usb@freebsd.org Sun Mar 1 15:45:59 2020 Return-Path: Delivered-To: freebsd-usb@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D0CB02437B3 for ; Sun, 1 Mar 2020 15:45:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 48VngC4fnNz3GDh for ; Sun, 1 Mar 2020 15:45:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 7F6C32437B1; Sun, 1 Mar 2020 15:45:59 +0000 (UTC) Delivered-To: usb@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 7E0E62437AF for ; Sun, 1 Mar 2020 15:45:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 48VngC1bcnz3GCw for ; Sun, 1 Mar 2020 15:45:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 157DB5D5E for ; Sun, 1 Mar 2020 15:45:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 021FjwnZ024273 for ; Sun, 1 Mar 2020 15:45:58 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 021FjwQ8024272 for usb@FreeBSD.org; Sun, 1 Mar 2020 15:45:58 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: usb@FreeBSD.org Subject: [Bug 244356] Writing to a USB 3.0 stick is very slow Date: Sun, 01 Mar 2020 15:45:59 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: usb X-Bugzilla-Version: 12.1-RELEASE X-Bugzilla-Keywords: needs-qa, performance X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: vidwer+fbsdbugs@gmail.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: usb@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 Mar 2020 15:45:59 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D244356 --- Comment #16 from vidwer+fbsdbugs@gmail.com --- I'll be following this. With the USB DA device from https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235897 dd and rsync tra= nsfers to UFS and to ZFS seem to stall, after a while. A 120-something transfer speed of a large generated file (dd if=3D/dev/uran= dom of=3Dfoo bs=3D1M count=3D1048576) stalls, drops to 10-something transfer sp= eed, stalls again and drops to KB/s speeds. After interrupting rsync, I ran 'time sync', which takes 'real 2m15.632s'. Because of the dd observation, perhaps 'disk cache' can't keep up with the amount of writes? rsync to UFS on USB 2.0 storage: sent 1,074,155,802 bytes received 76 bytes 9,633,685.00 bytes/sec rsync to UFS on USB 3.0 storage: sent 1,074,155,802 bytes received 76 bytes 2,438,492.35 bytes/sec I can test patches on 13-CURRENT. --=20 You are receiving this mail because: You are the assignee for the bug.=