Date: Sun, 12 Jul 2020 09:57:10 +0200 From: Hans Petter Selasky <hps@selasky.org> To: freebsd-usb@FreeBSD.org, freebsd-current@FreeBSD.org Subject: Re: slow USB 3.0 on -current Message-ID: <b0053811-20c6-53d6-1197-6ae50a7033ce@selasky.org> In-Reply-To: <20200711224426.GC4213@funkthat.com> References: <20200711224426.GC4213@funkthat.com>
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On 2020-07-12 00:44, John-Mark Gurney wrote: > Hello, > > I'm having issues getting good ethernet performance from a USB ethernet > adapter (ure) under FreeBSD on an HP EliteDesk 705 G2 Mini[1]. It's an > AMD PRO A10-8700B based system using the AMD A78 FCH chipset. > > Under FreeBSD -current (r362596), 12.1-R and 11.4-R, the RealTek USB > adapter only gets around 10MB/sec performance. During the transfer, > the CPU usage is only around 3-5%, so it's definitely not CPU bound. > > I have tested Windows 10 and NetBSD 9.0 performance, and both provide > 100MB/sec+ w/o troubles. > > I have attached dmesg from both FreeBSD -current and NetBSD 9.0. > > Any hints on how to fix this? > > This may be related, but I'm also having issues w/ booting when I have > both a SD USB 2.0 card reader AND the ure plugged into USB 3.0 ports. > > If I move the SD card reader to USB 2.0, the umass device will attach > and work. I have also attached a clip of the dmesg from that > happening. > > Has anyone else seen this issue? Ideas or thoughts on how to resolve > the performance issues? Hi, Can you check the output from ifconfig. What is the actual link speed. I suspect it has something to do with the MII bus code/implementation. Also check output from "vmstat -i" during usage to see if the number of IRQ/s is low. --HPS
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