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br: add metrics description for snapshot restore and PITR #18516

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Aug 20, 2024
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br: add metrics description for snapshot restore and PITR #18516

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add metrics for restore
Tristan1900 Aug 7, 2024
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address comments
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38 changes: 38 additions & 0 deletions grafana-tikv-dashboard.md
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Expand Up @@ -495,6 +495,44 @@
- Get Region Operation Count: The number of times the coordinator requests Region information from the PD
- Try Advance Trigger Time: The time taken for the coordinator to attempt to advance the checkpoint

### Backup & Import

- Import CPU Utilization: The CPU utilization aggregated by SST importer.
- Import Thread Count: The number of threads used by SST importer.
- Import Errors: The number of errors encountered during SST import.
- Import RPC Duration: The time spent on various RPC calls in SST importer.
- Import RPC Ops: The total number of RPC calls in SST importer.
- Import RPC Count: The number of RPC calls being processed by SST importer.
- Import Write/Download RPC Duration: The RPC time for write or download operations in SST importer.
- Import Wait Duration: The time spent waiting in queue for download task execution.
- Import Read SST Duration: The time spent reading an SST file from external storage and downloading it to TiKV.
- Import Rewrite SST Duration: The time spent rewriting the SST file based on rewrite rules.
- Import Ingest RPC Duration: The time spent handling ingest RPC requests on TiKV.
- Import Ingest SST Duration: The time spent ingesting the SST file into RocksDB.
- Import Ingest SST Bytes: The number of bytes ingested.
- Import Download SST Throughput: The SST download throughput in bytes per second.
- cloud request: The number of requests to cloud providers.

### Point In Time Restore

- CPU Usage: The CPU utilization by point-in-time recovery (PITR).
- P99 RPC Duration: The 99th percentile of RPC request duration.

Check failure on line 519 in grafana-tikv-dashboard.md

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GitHub Actions / vale 

[vale] reported by reviewdog 🐶
[PingCAP.Ordinal] Spell out all ordinal numbers ('99th') in text.

Raw Output:
{"message": "[PingCAP.Ordinal] Spell out all ordinal numbers ('99th') in text.", "location": {"path": "grafana-tikv-dashboard.md", "range": {"start": {"line": 519, "column": 25}}}, "severity": "ERROR"}
- Import RPC Ops: The total number of RPC calls in SST importer.
- Import RPC Count: The number of RPC calls being processed by SST importer.
- Cache Events: The number of events in the file cache during SST import.
- Overall RPC Duration: The time spent on RPC calls.
- Read File into Memory Duration: The time spent downloading files from external storage and loading them into memory.
- Queuing Time: The time spent waiting to be scheduled on a thread.
- Apply Request Throughput: The rate of applying requests in bytes.
- Downloaded File Size: The size of downloaded file in bytes.
- Apply Batch Size: The number of bytes for applying to Raft store in one batch.
- Blocked by Concurrency Time: The time spent waiting for execution due to concurrency constraints.
- Apply Request Speed: The speed of applying request to Raft store.
- Cached File in Memory: The files cached by the applying requests of SST importer.
- Engine Requests Unfinished: The number of pending requests to Raft store.
- Apply Time: The time spent writing data to Raft store.
- Raft Store Memory Usage: The memory usage for Raft store.

### Explanation of Common Parameters

#### gRPC Message Type
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