With the patches applied to Zesty and booting with iommu.passthrough=1 kernel parameter we are able to see 35+Gbps BW on iperf testing.
ubuntu@awsdp1:~$ iperf -s 192.168.5.5 -w 900M ubuntu@awrep0:~$ iperf -c 192.168.5.5 -P 12 -w 900M ------------------------------------------------------------ Client connecting to 192.168.5.5, TCP port 5001 TCP window size: 1.76 GByte (WARNING: requested 900 MByte) ------------------------------------------------------------ [ 12] local 192.168.5.10 port 50216 connected with 192.168.5.5 port 5001 [ 4] local 192.168.5.10 port 50194 connected with 192.168.5.5 port 5001 [ 5] local 192.168.5.10 port 50196 connected with 192.168.5.5 port 5001 [ 7] local 192.168.5.10 port 50200 connected with 192.168.5.5 port 5001 [ 6] local 192.168.5.10 port 50198 connected with 192.168.5.5 port 5001 [ 8] local 192.168.5.10 port 50202 connected with 192.168.5.5 port 5001 [ 9] local 192.168.5.10 port 50204 connected with 192.168.5.5 port 5001 [ 3] local 192.168.5.10 port 50206 connected with 192.168.5.5 port 5001 [ 10] local 192.168.5.10 port 50208 connected with 192.168.5.5 port 5001 [ 11] local 192.168.5.10 port 50210 connected with 192.168.5.5 port 5001 [ 13] local 192.168.5.10 port 50212 connected with 192.168.5.5 port 5001 [ 14] local 192.168.5.10 port 50214 connected with 192.168.5.5 port 5001 [ ID] Interval Transfer Bandwidth [ 12] 0.0-10.0 sec 4.16 GBytes 3.58 Gbits/sec [ 4] 0.0-10.0 sec 2.72 GBytes 2.34 Gbits/sec [ 5] 0.0-10.0 sec 3.55 GBytes 3.05 Gbits/sec [ 7] 0.0-10.0 sec 3.97 GBytes 3.41 Gbits/sec [ 6] 0.0-10.0 sec 4.09 GBytes 3.52 Gbits/sec [ 8] 0.0-10.0 sec 3.61 GBytes 3.10 Gbits/sec [ 9] 0.0-10.0 sec 3.48 GBytes 2.99 Gbits/sec [ 3] 0.0-10.0 sec 3.43 GBytes 2.95 Gbits/sec [ 10] 0.0-10.0 sec 2.92 GBytes 2.51 Gbits/sec [ 11] 0.0-10.0 sec 4.06 GBytes 3.49 Gbits/sec [ 14] 0.0-10.0 sec 4.08 GBytes 3.50 Gbits/sec [ 13] 0.0-10.0 sec 2.71 GBytes 2.32 Gbits/sec [SUM] 0.0-10.0 sec 42.8 GBytes 36.7 Gbits/sec -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1705123 Title: [Zesty] Fixes to iommu on arm64 to improve IO performance To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1705123/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
