scheduler: network slow store scheduler enhancement #22269
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| >> scheduler config evict-leader-scheduler add-store 2 // Add leader eviction scheduling for store 2 | ||
| >> scheduler config evict-leader-scheduler delete-store 2 // Remove leader eviction scheduling for store 2 | ||
| >> scheduler add evict-slow-store-scheduler // When there is one and only one slow store, evict all Region leaders of that store | ||
| >> scheduler add evict-slow-store-scheduler // Automatically detect slow-disk or slow-network nodes and evict all Region leaders from those nodes when certain conditions are met |
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| >> scheduler add evict-slow-store-scheduler // Automatically detect slow-disk or slow-network nodes and evict all Region leaders from those nodes when certain conditions are met | |
| >> scheduler add evict-slow-store-scheduler // Automatically detect slow-disk or slow-network nodes and evict all Region leaders from those nodes when specific conditions are met |
| #### Slow-disk nodes | ||
| Starting from v6.2.0, TiKV reports a `SlowScore` in store heartbeats to PD, calculated based on disk I/O conditions. The score ranges from 1 to 100, where a higher value indicates a higher possibility of disk performance anomalies on that node. |
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| Starting from v6.2.0, TiKV reports a `SlowScore` in store heartbeats to PD, calculated based on disk I/O conditions. The score ranges from 1 to 100, where a higher value indicates a higher possibility of disk performance anomalies on that node. | |
| Starting from v6.2.0, TiKV reports a `SlowScore` in store heartbeats to PD. This score is calculated based on disk I/O conditions and ranges from 1 to 100. A higher value indicates a higher possibility of disk performance anomalies on that node. |
| + Controls the interval at which the TiKV HealthChecker actively performs network detection to PD and other TiKV nodes. TiKV calculates a `NetworkSlowScore` based on the network detection and reports the network status of slow nodes to PD. | ||
| + Setting this value to `0` disables the network detection. Setting it to a smaller value increases the detection frequency, which helps detect network jitter more quickly, but it also consumes more network bandwidth and CPU resources. | ||
| + Default value: `100ms` | ||
| + Value range: 0 or `[10ms, +∞)` |
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| + Value range: 0 or `[10ms, +∞)` | |
| + Value range: `0` or `[10ms, +∞)` |
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| ### `inspect-network-interval` <span class="version-mark">New in v8.5.5 and v9.0.0</span> | ||
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| + Controls the interval at which the TiKV HealthChecker actively performs network detection to PD and other TiKV nodes. TiKV calculates a `NetworkSlowScore` based on the network detection and reports the network status of slow nodes to PD. |
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| + Controls the interval at which the TiKV HealthChecker actively performs network detection to PD and other TiKV nodes. TiKV calculates a `NetworkSlowScore` based on the network detection and reports the network status of slow nodes to PD. | |
| + Controls the interval at which the TiKV HealthChecker actively performs network detection to PD and other TiKV nodes. TiKV calculates a `NetworkSlowScore` based on the network detection results and reports the network status of slow nodes to PD. |
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