Yousong Zhou
743f65ebb8
Quote mainline linux commit fab0aa3b ("KVM: x86: Allow suppressing
prints on RDMSR/WRMSR of unhandled MSRs")
> Some guests use these unhandled MSRs very frequently.
> This cause dmesg to be populated with lots of aggregated messages on
> usage of ignored MSRs. As ignore_msrs=true means that the user is
> well-aware his guest use ignored MSRs, allow to also disable the
> prints on their usage.
>
> An example of such guest is ESXi which tends to access a lot to MSR
> 0x34 (MSR_SMI_COUNT) very frequently.
>
> In addition, we have observed this to cause unnecessary delays to
> guest execution. Such an example is ESXi which experience networking
> delays in it's guests (L2 guests) because of these prints (even when
> prints are rate-limited). This can easily be reproduced by pinging
> from one L2 guest to another. Once in a while, a peak in ping RTT
> will be observed. Removing these unhandled MSR prints solves the
> issue.
>
> Because these prints can help diagnose issues with guests,
> this commit only suppress them by a module parameter instead of
> removing them from code entirely.
Yunion OneCloud
README in Chinese
What is Yunion OneCloud?
Yunion OneCloud is an open source unified-IaaS cloud platform.
As its name sugguests, 'Yun' means 'cloud' in Chinese and 'Yunion OneCloud' means to unify many distinct clouds into the one that behaves like an integral cloud platform.
As trends show, the enterprise IT infrastructure in the future would be unavoidably heterogeneous and the public clouds should be the major infrastructure providers for many enterprises. Further, the infrastructure would most likely be prepared for the cloud-native applications running on Kubernetes. Yunion OneCloud is built to provide the cloud architecture for this scenario such that it is the middle layer between the underlying cloud infrustructures and the overlay kubernetes clusters across many clouds.
Many may consider Yunion OneCloud as a multi-cloud management platform (MCMP). Rather, we would view it as an IaaS platform as it does not only manage the resources and services from many clouds, but also hides the differences of underlying technologies and exposes one set of APIs that allow programatically interacting with the compute/storage/networking resources across many clouds.
Yunion OneCloud is working on abstracting APIs for the following resources:
- Compute, including virtual machines, images, etc.
- Storage, including disks, snapshots, object storages, etc.
- Networking, including load balancers, VPC, virtual networks, NAT gateways, security groups, etc.
- Accouting and billing, etc.
- ...
over the following many cloud providers:
- On-premise IT resources, including kvm VM, baremetal, VMware vsphere/ESXi, etc.
- Private clouds, including OpenStack, etc.
- Public clouds, including Aliyun, AWS, Azure, Tencent Cloud, Huawei Cloud, etc.
You are welcome to install and try Yunion OneCloud. Looking forward to your feedback.
Installation
Please refers to install & deployment (currently in Chinese Only).
Documentations
Architecture
Contribution
You are welcome to contribute to the project. Please refer to CONTRIBUTING.md for guidelines.
License
Apache License 2.0. See LICENSE 。