From 8fc019682d482e9155a6d7bd8d686703e7ecf8c1 Mon Sep 17 00:00:00 2001 From: Ti Chi Robot Date: Wed, 29 Sep 2021 17:20:47 +0800 Subject: [PATCH] Add desc of "Storage Write Stall" row in the TiFlash grafana (#6524) (#6569) --- tiflash/monitor-tiflash.md | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/tiflash/monitor-tiflash.md b/tiflash/monitor-tiflash.md index f9641145a0789..10c3892325886 100644 --- a/tiflash/monitor-tiflash.md +++ b/tiflash/monitor-tiflash.md @@ -72,6 +72,20 @@ The following sections introduce the default monitoring information of **TiFlash > > These metrics only cover the monitoring information of the TiFlash storage layer and do not cover that in TiFlash-Proxy. +## Storage Write Stall + +- Write & Delta Management Throughput: The throughput of write and data compaction for all instances. + - `throughput_write` means the throughput of data synchronization through Raft. + - `throughput_delta-management` means the throughput of data compaction. + - `total_write` means the total bytes written since the last start. + - `total_delta-management` means the total bytes of data compacted since the last start. +- Write Stall Duration: The stall duration of write and removing Region data (deleting ranges) by instance. +- Write Throughput By Instance: The throughput of write by instance. It includes the throughput by applying the Raft write commands and Raft snapshots. +- Write Command OPS By Instance: The total count of different kinds of commands received by instance. + - `write block` means the data logs synchronized through Raft. + - `delete_range` means that some Regions are removed from or moved to this instance. + - `ingest` means some Region snapshots are applied to this instance. + ## Raft - Read Index OPS: The number of times that each TiFlash instance triggers the `read_index` request per second, which equals to the number of Regions triggered.