brew install smartmontools
smartctl -a disk0
smartctl 7.3 2022-02-28 r5338 [Darwin 21.6.0 arm64] (local build)
Copyright (C) 2002-22, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Number: APPLE SSD AP1024R
Serial Number: 0baxxxxxx60ce05
Firmware Version: 387.140.
PCI Vendor/Subsystem ID: 0x106b
IEEE OUI Identifier: 0x000000
Controller ID: 0
NVMe Version: <1.2
Number of Namespaces: 3
Local Time is: Fri Sep 16 21:47:18 2022 CST
Firmware Updates (0x02): 1 Slot
Optional Admin Commands (0x0004): Frmw_DL
Optional NVM Commands (0x0004): DS_Mngmt
Maximum Data Transfer Size: 256 Pages
Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
0 + 0.00W - - 0 0 0 0 0 0
=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
SMART/Health Information (NVMe Log 0x02)
Critical Warning: 0x00
Temperature: 36 Celsius
Available Spare: 100%
Available Spare Threshold: 99%
Percentage Used: 0%
Data Units Read: 3,170,254 [1.62 TB]
Data Units Written: 3,421,121 [1.75 TB]
Host Read Commands: 68,526,235
Host Write Commands: 55,863,189
Controller Busy Time: 0
Power Cycles: 142
Power On Hours: 49
Unsafe Shutdowns: 3
Media and Data Integrity Errors: 0
Error Information Log Entries: 0
Read 1 entries from Error Information Log failed: GetLogPage failed: system=0x38, sub=0x0, code=745
• M1 Mac 硬盘读写相较 Intel Mac 在短期内水平偏高
• 不同使用程度的 M1 Mac 读写量也不尽相同，从 10TB - 200TB 不等
• 使用强度较大，即使 16GB RAM 也不能避免读写量过大问题
• 读写占比较高的是 Swap，它是内存不足时系统生成的交换分区，可通过 Swapman 查看。其中使用 Swap 较多的进程是 kernel_task
• 有网友反馈关闭全盘 Spotlight 可有效减少 Swap 读写，未经验证
建议大家在购买 M1 Mac 时，尽量选择大内存大硬盘，可有效增加硬盘寿命。同时，也不要谈 TLC 的 P/E 次数而色变，在主控算法加持下硬盘没有你想的那么脆弱。希望苹果能够尽快意识到这个问题，改进可能的系统问题、优化激进的 Swap 策略