Date: Sat, 09 Feb 2019 02:21:08 -0500 From: "Dave Cottlehuber" <dch@skunkwerks.at> To: freebsd-questions@freebsd.org Subject: Re: Bhyve: virtio-net very slow with FreeBSD 12.0 Host Message-ID: <9439aade-ec3a-4d84-9a0d-c102e2a9f470@www.fastmail.com> In-Reply-To: <20190205221245.4b97fefd.ole@free.de> References: <20190205150522.635b9e34.ole@free.de> <20190205221245.4b97fefd.ole@free.de>
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On Tue, 5 Feb 2019, at 22:16, Ole wrote: > PS: >=20 > i discovered the tool iperf. The connection from Host to VM is good, > 6.36 Gbits/sec. The connection from Outside to host is also good, 847 > Mbits/sec. >=20 > But from outside to the VM it is just 60.6 Kbits/sec.=20 >=20 > Is there a generally problem with my setup?: >=20 >=20 > em0 em0.4030(mtu 1400) tap0(mtu 1400) I can=E2=80=99t speak for the specific config above, but generally this = is a good time to reach for tcpdump(1) to capture some traffic on em0 an= d see if you can spot any anomalies especially in things like frame size= (mtu related issues) and tcp checksums. See https://lists.freebsd.org/p= ipermail/freebsd-jail/2019-February/003686.html for a couple of things t= o check for there too. https://www.freebsd.org/cgi/man.cgi?query=3Dtcpdump and the GUI app wire= shark make a very nice combo. Happy hunting. Dave
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