>>> Data transfer between VMs on the same host is very, very slow ~16KB/s. > I am finding slowness with Windows guest to Linux Host and also general > slowness > on network access from client pc to any guest. > There is a performance issue with Windows guests since they tend to use smaller packets with segmentation offloading. They will always be slower than Linux guests but we are working on narrowing the gap. > Speeds were terrible using a Realtek PCI card 8169, something like 4.25mbts > but > perhaps a hardware incompatibility. What are the offloading settings for the card (sudo ethtool -k <interface>)? >
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