IOPS

Overview

IOPS에 대한 기술 문서입니다.

Summary

• 무엇인가? - IOPS
• 왜 필요한가? - HPC 및 서버 환경에서 필수 개념
• 언제 사용하는가? - 서버 구성, 성능 튜닝, 문제 해결 시

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Purpose

이 문서가 존재하는 이유

• Goal: IOPS에 대한 기술 정보 제공
• Scope: IOPS의 개념, 사용법, 설정
• Non-goals: 다른 주제로의 확장

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Key Concepts

Concept	Description	Related
IOPS	HPC/서버 환경에서 중요한 기술 개념	Linux, Server

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Detailed Explanation

“IOPS” stands for “Input/Output Operations Per Second.” IOPS is an important performance metric for storage devices that shows number of read/write operations that a storage device can perform per second. A high IOPS number means that a storage device is capable of performing a large number of read and write operations in a very short amount of time. This can be beneficial for applications and systems that require fast and efficient access to storage resources. If there is a sudden drop in IOPS, it could indicate a problem with the storage system or with one of the applications running on the system.

Iotop is an interactive real-time I/O usage monitoring tool to check disk read and write bandwidth usage for each running process on Linux.

#install iotop on Ubuntu
$ sudo apt update
$ sudo apt install iotop
#Check Total IO Usage Per Process
$ sudo iotop -ao
#Check Process ID instead of TID in iotop 
$ sudo iotop -P
#Filter by Process id or username
$ sudo iotop -P -p <PID> -p <PID>
$ sudo iotop -P -u <USERNAME1> -u <USERNAME2>

IOPS via network is largely a function of block size divided into bandwidth. 1gbit is about 125MB/sec, divide that by 4KB(block size, for example) or whatever your block size is and you get about 32,768. the max number of IOPS over 1gbit network.  

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Best Practices

• 최신 버전 사용 권장
• 공식 문서 참고
• 테스트 환경에서 먼저 검증

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References

• IOPS

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Related Pages

• Linux
• Server
• Hardware
• Network

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Knowledge Graph

Related

→ Linux → Server → Hardware → Network