Date: Sun, 12 Jul 2020 14:54:49 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: Hans Petter Selasky <hps@selasky.org> Cc: freebsd-usb@FreeBSD.org, freebsd-current@FreeBSD.org Subject: Re: slow USB 3.0 on -current Message-ID: <20200712215449.GI4213@funkthat.com> In-Reply-To: <b0053811-20c6-53d6-1197-6ae50a7033ce@selasky.org> References: <20200711224426.GC4213@funkthat.com> <b0053811-20c6-53d6-1197-6ae50a7033ce@selasky.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Hans Petter Selasky wrote this message on Sun, Jul 12, 2020 at 09:57 +0200:
> 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?
>
> 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.
ifconfig is reporting it's 1000baseT.
> Also check output from "vmstat -i" during usage to see if the number of
> IRQ/s is low.
Not sure what is considered low, but I'm seeing consistently around
7800 int/s for xhci0.
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20200712215449.GI4213>