- Xen Gpl Pv Driver Developers Network Login
- Xen Gpl Pv Driver Developers Network Connect
- Xen Gpl Pv Driver Developers Network Setup
- As you may know, Xen has for several years had the ability to “pass through” a pci device directly to a guest, allowing that guest to control the driver. This has several applications, including driver domains and increased performance for graphics or networking. To pass through a device, you need to find out its BDF (Bus, Device, Function).
- It has long been the case that all HVM guests under Xen are provided with a PV console. You can attach to this console in the same way that you attach to the console of a PV guest, by typing in the control domain: xl console nameofguest Until recently there has been no Windows PV driver interaction with this console.
This is a list of open work items for Xen network project.
Explained in English, this CBT discusses installation of Para Virtual Drivers on Windows XP to improve performance. Author: Muhammad Kamran Azeem (kamran. Windows PV Network Device Driver (xennet.tar). Windows PV Drivers. XCP-ng; HVMI; Governance; Security Policy; Downloads. All Downloads; Xen Project Archives. Xen GPL PV Driver Developers other devices Xen GPL PV Driver Developers Xen Block Device Driver Operating System Versions: Windows XP, 7, 8, 8.1, 10 (x64, x86).
These items are mostly Linux specific. If you need help developing for other OSes, don't hesitate to email Xen-devel with your questions.
- 2Open Work Items
In progress
New baseline for Xen network
- split event channels (done)
- kthread + NAPI 1:1 model (done)
After switching to new baseline, you can get better scheduling fairness among vifs, mitigate interrupts to some extend, and have better aggregated throughput.
But please also note that you would need irqbalance to run in Dom0 (or your backend driver domain), otherwise you might get worse performance than before.
Unfortunately most in stock irqbalance would not work in Dom0 as it doesn't classify xen-dyn-event properly, you would need compile from the latest irqbalance master branch.
Open Work Items
| Contact: xen-devel@lists.xen.org |
| Description: The max outstanding amount of data the it can have is 898kB (64K of data use 18 slot, out of 256. 256 / 18 = 14, 14 * 64KB). This can be expanded by having multi-page to expand the ring. This would benefit NFS and bulk data transfer (such as netperf data). |
| References: Not specified, useful references. |
| Contact: xen-devel@lists.xen.org |
| Description: create many TX and RX rings for vif, scales better when DomU has more vcpus. |
| References: Not specified, useful references. |
| Contact: xen-devel@lists.xen.org |
| Description: Instead don't touch them and let the Xen IOMMU create appropriate entries. This would require the DMA API in dom0 to be aware whether the grant has been done and if not (so FOREIGN, aka no m2p_override), then do the hypercall to tell the hypervisor that this grant is going to be used by a specific PCI device. This would create the IOMMU entry in Xen. |
| References: Not specified, useful references. |
| Contact: xen-devel@lists.xen.org |
| Description: This would only be done from frontend -> backend path. However we could exhaust initial domains memory. |
| References: Not specified, useful references. |
Xen Gpl Pv Driver Developers Network Login
Affinity of the frontend and backend being on the same NUMA node
Xen Gpl Pv Driver Developers Network Connect
| Contact: xen-devel@lists.xen.org |
| Description: This touches upon the discussion about NUMA and having PV guests be aware of memory layout. It also means that each backend kthread needs to be on a different NUMA node. |
| References: Not specified, useful references. |
Xen Gpl Pv Driver Developers Network Setup