In Huawei FusionCompute, what does "shares" refer to in CPU QoS management?

In Huawei FusionCompute, "shares" in CPU QoS (Quality of Service) management specifically refers to the method of calculating resources based on CPU share values. This approach allows the distribution of CPU resources among different virtual machines (VMs) based on a weighting system represented by these share values.

When multiple VMs are competing for CPU resources, the system uses these share values to determine how much processing power each VM receives, proportionately. Essentially, if one VM has a higher share value than another, it will receive more CPU resources during contention, ensuring a fair allocation based on predefined priority levels.

This mechanism is crucial for maintaining performance consistency, especially in environments with varying workloads, as it allows administrators to prioritize resource allocation effectively without setting strict limits that could lead to underutilization or overloading. Other aspects, such as minimum or maximum resource guarantees or adjusting reservations, are managed through different mechanisms within the QoS framework, illustrating how "shares" specifically focuses on relational resource distribution rather than strict numeric boundaries.