Query SSD wear level under Opnsense

[Ricardo]

I have a small 16GB SSD running in the APU2 router, and I am concerned about how long does it live before wearing out. I have set up TMPFS for /var and /tmp, but some other services are writing lot of data to the /rootfs.

I checked SMARTmontools: it gives strange result

241 Lifetime_Writes_GiB     0x0012   100   100   000    Old_age   Always       -       157

That would mean 157 GB written? Thats unreallistic.

I installed Monit --> under system stats it shows written: 7,5 GB. But as far as I can understand, that only counts a single run of the operating system, when I reboot this value resets back to zero. Also I am not sure if it counts writes to /rootfs, does it exclude writes to the /var and /tmp partitions, which both are TMPFS, therfore they dont contribute to the wearing of the SSD? Cannot figure out what to do here...