Date: Thu, 01 Sep 2016 09:05:57 +0000 From: Howard Su <howard0su@gmail.com> To: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>, freebsd-virtual@freebsd.orgr, Sepherosa Ziehau <sepherosa@gmail.com> Subject: [VBox] Extreme slow UDP performance between host and guest Message-ID: <CAAvnz_r7TtGb3fBnAZMUJhL=6Ziq5oODfkzSCWt7FUoVVEgE=w@mail.gmail.com>
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I used iperf to do a quick experiment on the UDP performance between VirtualBox and Guest through vboxnetadp. Guest is acting as server and Host machine is acting as client. the UDP throughput is only 1/350 of TCP throughput. Guest kernel is -Current and Host Kernel is 11.0-RC2. Anyone has idea? is there any known issue in vboxnetadp? ------------------------------------------------------------ Client connecting to 192.168.0.60, UDP port 5001 Sending 1470 byte datagrams UDP buffer size: 9.00 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.0.1 port 48290 connected with 192.168.0.60 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec [ 3] Sent 893 datagrams [ 3] Server Report: [ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec 0.039 ms 0/ 893 (0%) ------------------------------------------------------------ Client connecting to 192.168.0.60, UDP port 5001 Sending 4096 byte datagrams UDP buffer size: 9.00 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.0.1 port 58009 connected with 192.168.0.60 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec [ 3] Sent 321 datagrams [ 3] Server Report: [ 3] 0.0-10.0 sec 1.25 MBytes 1.05 Mbits/sec 0.100 ms 0/ 321 (0%) ------------------------------------------------------------ Client connecting to 192.168.0.60, TCP port 5001 TCP window size: 32.8 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.0.1 port 15490 connected with 192.168.0.60 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 447 MBytes 374 Mbits/sec -Howard -- -Howard
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