Opened 7 months ago
Last modified 6 months ago
#21876 new defect
Slow Network Throughput when using Bridged network
| Reported by: | kokizzu | Owned by: | |
|---|---|---|---|
| Component: | network | Version: | VirtualBox-7.0.12 |
| Keywords: | Cc: | ||
| Guest type: | Windows | Host type: | Linux |
Description
Tried all gigabit adapter and virtio all is quite slow (only getting 30% of original throughput of hosts) and the virtio cannot connect to internet or VPN at all.
Attachments (2)
Change History (4)
by , 7 months ago
| Attachment: | Screenshot from 2023-10-18 02-56-22.png added |
|---|
by , 7 months ago
| Attachment: | Screenshot from 2023-10-18 02-56-56.png added |
|---|
bandwidth from guest (windows inside virtualbox)
comment:2 by , 6 months ago
I've noticed slow network throughput/copy failure on one of my physical linux hosts after upgrading from 6.1.38 to 7.0.12. The linux host's ethernet device is: Qualcomm Atheros AR8151 V2.0 Gigabit Ethernet (rev c0), with driver atl1c.
The guests are setup to use Intel PRO/1000 MT Desktop (82540EM) as a Bridged adapter.
For my issue/test, I was running scp from my guest for transferring a 24249 byte file to another machine (not the host) and the connection would fail without transferring. An interesting note in Wireshark on the problem guest was that the packet size was 7036 bytes being sent out. What was received on the destination was 132 bytes. The MTU for the guest is set to 1500.
When I switched the bridged adapter to be PCnet-PCI II (Am79C970A), I was able transfer the file and the largest packet size was 1514.
The other Linux physical hosts where the guests aren't seeing this issue have a Intel Corporation 82571EB/82571GB Gigabit Ethernet Controller and/or Realtek Semiconductor Co. RTL8111/8168/8411 PCI Express gigabit Ethernet controller.
If I should submit as a separate ticket, let me know.
bandwidth from host