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fk0, легенда (11.06.2020 18:22, просмотров: 547) ответил fk0 на Смотри, всё плохо, простейшие операции над файликами (ext4) пишут под сотню секторов:
Вдогонку, ещё есть смарт, например: 
# smartctl -a /dev/nvme0
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.15.0-38-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Number: Samsung SSD 970 PRO 1TB
Serial Number: *************
Firmware Version: *********
PCI Vendor/Subsystem ID: 0x144d
IEEE OUI Identifier: 0x002538
Total NVM Capacity: 1,024,209,543,168 [1.02 TB]
Unallocated NVM Capacity: 0
Controller ID: 4
Number of Namespaces: 1
Namespace 1 Size/Capacity: 1,024,209,543,168 [1.02 TB]
Namespace 1 Utilization: 318,096,261,120 [318 GB]
Namespace 1 Formatted LBA Size: 512
Local Time is: Thu Jun 11 18:19:25 2020 MSK
Firmware Updates (0x16): 3 Slots, no Reset required
Optional Admin Commands (0x0037): Security Format Frmw_DL *Other*
Optional NVM Commands (0x005f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat *Other*
Maximum Data Transfer Size: 512 Pages
Warning Comp. Temp. Threshold: 81 Celsius
Critical Comp. Temp. Threshold: 81 Celsius

Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
0 + 6.20W - - 0 0 0 0 0 0
1 + 4.30W - - 1 1 1 1 0 0
2 + 2.10W - - 2 2 2 2 0 0
3 - 0.0400W - - 3 3 3 3 210 1200
4 - 0.0050W - - 4 4 4 4 2000 8000

Supported LBA Sizes (NSID 0x1)
Id Fmt Data Metadt Rel_Perf
0 + 512 0 0

=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

SMART/Health Information (NVMe Log 0x02, NSID 0xffffffff)
Critical Warning: 0x00
Temperature: 42 Celsius
Available Spare: 100%
Available Spare Threshold: 10%
Percentage Used: 0%
Data Units Read: 863,722 [442 GB]
Data Units Written: 2,942,885 [1.50 TB]

Host Read Commands: 5,878,389
Host Write Commands: 4,771,979
Controller Busy Time: 26
Power Cycles: 86
Power On Hours: 21
Unsafe Shutdowns: 21
Media and Data Integrity Errors: 0
Error Information Log Entries: 8
Warning Comp. Temperature Time: 0
Critical Comp. Temperature Time: 0
Temperature Sensor 1: 42 Celsius
Temperature Sensor 2: 47 Celsius

Error Information (NVMe Log 0x01, max 64 entries)
No Errors Logged
[ZX]