Complete Guide to Monitoring Disk I/O of iOS Applications with Keymob

1. Feature Overview

Keymob’s disk monitoring module provides process-level fine-grained monitoring, allowing real-time tracking of read/write behavior for a specified application, and distinguishing between system-wide and app-specific I/O activities. The core features include:

  • Read/Write Throughput Analysis: Byte-level monitoring of read/write rates
  • I/O Pattern Identification: Differentiating between sequential and random access patterns
  • Latency Metric Monitoring: Tracking the response time for each operation (P50/P95/P99)

2. Step-by-Step Process

2.1 Starting the Monitoring Module
  1. Connect Device: Connect the iOS device to Keymob via USB/Wi-Fi
  2. Navigation Path: In the left menu, select Performance Monitoring → Performance Charts
  3. Activate Metrics: In the top metrics dropdown, check “Disk Monitoring” and “Disk Rate Monitoring”
  4. Select Application: Click the “Select App” button and choose the target application (e.g., “Douyin”) from the list
    Disk Monitoring Entry