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Performance Monitoring Guide

OceanStor Dorado V3 Series V300R002

This document describes performance monitoring of storage systems, including the monitoring method, indicator planning, configuration monitoring, and problem diagnosis.
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Performance Indicators

Performance Indicators

Performance indicators provide information on the operating status of a storage system.

The key performance indicators include:

  • Input/Output Operations Per Second (IOPS): IOPS measures the I/O processing capability of a storage system. In application scenarios such as database Online Transaction Processing (OLTP) and SPC-1 certification, IOPS is typically used to measure system performance.
  • Bandwidth: Bandwidth indicates the amount of data processed per second, typically expressed in MB/s or GB/s. Bandwidth measures the throughput of a storage system. In application scenarios such as database Online Analytical Processing (OLAP), media, and video surveillance, bandwidth is a typical indicator used to measure system performance.
  • Latency: Latency indicates the period of time between initiating an I/O request and completing the I/O request, typically expressed in millisecond (ms). The average response time and the maximum response time are commonly used indicators. For example, database OLTP typically requires that the latency be shorter than 10 ms; a Virtual Desktop Infrastructure (VDI) scenario typically requires that the latency be shorter than 30 ms; the latency required for video on demand (VOD) and video surveillance services varies with the bit rate.
NOTE:
  • In application scenarios where the I/O size is smaller than 64 KB, IOPS is the major storage performance indicator.
  • In application scenarios where the I/O size is 64 KB or larger, bandwidth is the major storage performance indicator.
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Updated: 2019-07-17

Document ID: EDOC1100049152

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