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Diffstat (limited to 'results/scraper/launchpad-without-comments/1286253')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1286253 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1286253 b/results/scraper/launchpad-without-comments/1286253 new file mode 100644 index 000000000..de2f351f8 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1286253 @@ -0,0 +1,11 @@ +virtio-net acceleration features not set when plugged into backend dynamically + +When using indpendent transport and backend in this case virtio-net-device transport, none of the acceleration features are set after guest probes the transport the backend is plugged into. For virtio-net this leads to low throughput/performance. This holds true for virtio-mmio, PCI transports and most likely for others as well (CCW, S390) and other backends + +Command to run: +./qemu-system-arm -enable-kvm -smp 2 -kernel zImage -dtb ./guest-a15.dtb -m 512 -M vexpress-a15 -cpu cortex-a15 -nographic \ + -append "root=/dev/vda rw console=ttyAMA0 rootwait" -drive if=none,file=/mnt/gauss.root,id=vm1 \ + -device virtio-blk-device,drive=vm1 -netdev type=tap,id=net0,ifname=tap0 \ + -device virtio-net-device,netdev=net0,mac="52:54:00:12:34:58" + +For x86 same virtio command for network. \ No newline at end of file |