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Tags: kernel   kubuntu   dell   ssd  
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Title: Should I turn off kernel logging (and how?) if I'm running off an SSD?
ID: /2019/11/12/Should-I-turn-off-kernel-logging-_and-how__-if-I_m-running-off-an-SSD_
Created: November 12, 2019    Edited:  June 12, 2020
Upload: November 24, 2022    Layout:  post
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The linux kernel is well aware of SSDs for a long time and default installations seem to work just fine “out-of-the-box”.

I would leave logging and everything else to the default settings. From time to time I would monitor the life span of the SSD:

The above answer details how to check your remaining life of your SSD:

First step is to install nvme-cli because it provides the most information:

sudo apt install nvme-cli

Next gather information available from SSD:

$ sudo nvme smart-log /dev/nvme0
Smart Log for NVME device:nvme0 namespace-id:ffffffff
critical_warning                    : 0
temperature                         : 42 C
available_spare                     : 100%
available_spare_threshold           : 10%
percentage_used                     : 0%
data_units_read                     : 28,149,264
data_units_written                  : 19,392,109
host_read_commands                  : 559,538,536
host_write_commands                 : 171,732,762
controller_busy_time                : 1,352
power_cycles                        : 2,384
power_on_hours                      : 1,362
unsafe_shutdowns                    : 133
media_errors                        : 0
num_err_log_entries                 : 608
Warning Temperature Time            : 0
Critical Composite Temperature Time : 0
Temperature Sensor 1                : 42 C
Temperature Sensor 2                : 55 C

The percentage used is 0% after two years. When it hits 100% then theoretically the drive is all used up and needs replacing. But here is someone who has used up 250% which one would think impossible:

To make a long story short, chances are your SSD will outlast your computer system these days.

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