---
type: Operations Guide
title: Scalar Manager Metrics Reference
description: This document provides a list of explanations for all metrics available in Scalar Manager, via Grafana, to help you monitor the performance, health, and operational status of your ScalarDL deployments.
resource: https://scalardl.scalar-labs.com/docs/3.13/scalar-manager/metrics-reference/
tags:
- scalardl
- v3.13
- phase:operate
- section:manage
- edition:enterprise-option
status: stable
product: scalardl
product_title: ScalarDL
version: '3.13'
patch_version: 3.13.0
doc_id: scalar-manager/metrics-reference
lifecycle_phase: operate
breadcrumb:
- Manage
- Monitor
editions:
- Enterprise Option
generated:
  by: process:okf-build/1.0.0
  at: '2026-08-10T20:40:03Z'
sources:
- id: docs-scalardl
  resource: https://github.com/scalar-labs/docs-scalardl/blob/03da04b21c1a7ce3eb94d9e29129a0ce194ecbeb/versioned_docs/version-3.13/scalar-manager/metrics-reference.mdx
  title: ScalarDL documentation source (MDX)
  author: process:scalar-labs/docs-scalardl
  last_modified: '2026-08-07T17:27:19Z'
---

# Scalar Manager Metrics Reference

This document provides a list of explanations for all metrics available in Scalar Manager, via Grafana, to help you monitor the performance, health, and operational status of your ScalarDL deployments.

## Understanding the metrics

Before exploring the specific metrics, it's important to understand how they are measured:

- **Rate metrics (per one second):** These metrics measure the frequency of operations, indicating how many times a specific operation occurs each second.
- **Execution time metrics (percentile):** These metrics measure how long operations take to complete, presented as percentiles (p50, p90, p99). Execution times are measured in milliseconds. For example:
  - **p50 (median):** 50% of operations complete faster than this time
  - **p90:** 90% of operations complete faster than this time
  - **p99:** 99% of operations complete faster than this time

Higher percentile values (especially p99) help identify worst-case performance scenarios that might affect user experience even when average performance seems acceptable.

In the tables below, related rate and execution time metrics are grouped together for clarity.

## Total Requests

| Metric                              | Description                                             |
|-------------------------------------|---------------------------------------------------------|
| **Success Requests per one second** | The number of successful requests processed per second. |
| **Failure Requests per one second** | The number of failed requests per second.               |
| **Create table per one second / execution time (percentile)**       | Number of table creation operations per second and the time taken to execute them, measured in percentiles.      |
| **Drop table per one second / execution time (percentile)**         | Number of table drop operations per second and the time taken to execute them, measured in percentiles.          |
| **Truncate table per one second / execution time (percentile)**     | Number of table truncate operations per second and the time taken to execute them, measured in percentiles.      |
| **Get table metadata per one second / execution time (percentile)** | Number of metadata retrieval operations per second and the time taken to retrieve them, measured in percentiles. |

## Distributed Transaction Service

| Metric | Description |
|--------|-------------|
| **Transaction begin per one second / execution time (percentile)** | Number of transaction start operations per second and the time taken to start them, measured in percentiles. |
| **Transaction get per one second / execution time (percentile)** | Number of data retrieval operations within transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction scan per one second / execution time (percentile)** | Number of scan (range read) operations within transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction put per one second / execution time (percentile)** | Number of data write operations within transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction delete per one second / execution time (percentile)** | Number of data deletion operations within transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction mutate per one second / execution time (percentile)** | Number of batch mutation operations within transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction commit per one second / execution time (percentile)** | Number of transaction commit operations per second and the time taken to execute them, measured in percentiles. |
| **Transaction rollback per one second / execution time (percentile)** | Number of transaction rollback operations per second and the time taken to execute them, measured in percentiles. |

## Two Phase Commit Transaction Service

| Metric | Description |
|--------|-------------|
| **Transaction begin per one second / execution time (percentile)** | Number of 2PC transaction start operations per second and the time taken to start them, measured in percentiles. |
| **Transaction join per one second / execution time (percentile)** | Number of transaction join operations per second and the time taken to execute them, measured in percentiles. |
| **Transaction get per one second / execution time (percentile)** | Number of data retrieval operations within 2PC transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction scan per one second / execution time (percentile)** | Number of scan operations within 2PC transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction put per one second / execution time (percentile)** | Number of data write operations within 2PC transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction delete per one second / execution time (percentile)** | Number of data deletion operations within 2PC transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction mutate per one second / execution time (percentile)** | Number of batch mutation operations within 2PC transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction prepare per one second / execution time (percentile)** | Number of transaction prepare operations per second and the time taken to execute them, measured in percentiles. |
| **Transaction validate per one second / execution time (percentile)** | Number of transaction validation operations per second and the time taken to execute them, measured in percentiles. |
| **Transaction commit per one second / execution time (percentile)** | Number of 2PC transaction commit operations per second and the time taken to execute them, measured in percentiles. |
| **Transaction rollback per one second / execution time (percentile)** | Number of 2PC transaction rollback operations per second and the time taken to execute them, measured in percentiles. |

## GraphQL Service

| Metric | Description |
|--------|-------------|
| **Success/Failure HTTP Requests per one second** | Number of successful and failed HTTP requests to the GraphQL service per second. |
| **Success/Failure GraphQL Queries per one second** | Number of successful and failed GraphQL queries executed per second. |
| **GraphQL execution time (percentile)** | Time taken to execute GraphQL queries, measured in percentiles. |

## SQL Total Requests

| Metric                                          | Description                                                        |
|-------------------------------------------------|--------------------------------------------------------------------|
| **Success/Failure SQL Requests per one second** | Number of successful and failed SQL requests processed per second. |

## SQL Distributed Transaction Service

| Metric                                                                | Description                                                                                                           |
|-----------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------|
| **Transaction begin per one second / execution time (percentile)**    | Number of SQL transaction start operations per second and the time taken to start them, measured in percentiles.      |
| **Transaction execute per one second / execution time (percentile)**  | Number of SQL statement execution operations per second and the time taken to execute them, measured in percentiles.  |
| **Transaction commit per one second / execution time (percentile)**  | Number of SQL transaction commit operations per second and the time taken to execute them, measured in percentiles.    |
| **Transaction rollback per one second / execution time (percentile)** | Number of SQL transaction rollback operations per second and the time taken to execute them, measured in percentiles. |

## SQL Two Phase Commit Transaction Service

| Metric                                                                | Description                                                                                                                                  |
|-----------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------|
| **Transaction begin per one second / execution time (percentile)**    | Number of SQL 2PC transaction start operations per second and the time taken to start them, measured in percentiles.                         |
| **Transaction join per one second / execution time (percentile)**     | Number of SQL transaction join operations per second and the time taken to execute them, measured in percentiles.                            |
| **Transaction execute per one second / execution time (percentile)**  | Number of SQL statement execution operations within 2PC transactions per second and the time taken to execute them, measured in percentiles. |
| **Transaction prepare per one second / execution time (percentile)**  | Number of SQL transaction prepare operations per second and the time taken to execute them, measured in percentiles.                         |
| **Transaction validate per one second / execution time (percentile)** | Number of SQL transaction validation operations per second and the time taken to execute them, measured in percentiles.                      |
| **Transaction commit per one second / execution time (percentile)**   | Number of SQL 2PC transaction commit operations per second and the time taken to execute them, measured in percentiles.                      |
| **Transaction rollback per one second / execution time (percentile)** | Number of SQL 2PC transaction rollback operations per second and the time taken to execute them, measured in percentiles.                    |

## SQL Metadata Service

| Metric                                                                            | Description                                                                                                                 |
|-----------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------|
| **Get namespace metadata per one second / execution time (percentile)**           | Number of namespace metadata retrieval operations per second and the time taken to retrieve them, measured in percentiles.  |
| **Get table metadata per one second / execution time (percentile)**               | Number of SQL table metadata retrieval operations per second and the time taken to retrieve them, measured in percentiles.  |
| **List table metadata in namespace per one second / execution time (percentile)** | Number of operations listing all tables in a namespace per second and the time taken to list them, measured in percentiles. |
