Proxmox with ZFS + SSDs: Built-in TRIM cron job vs zfs autotrim?

[lexxxel]

good point, thanks for digging, then i disable periodic trim. Even if its working fine for over 3-4 months now, there seems to be a risk.

No, that was not my point. When you schedule the trim, you will see a greater slowdown on this drives then you might expect. Depending on the current load this might impact your whole system. I had this issue where the trim would take hours and run along ci pipelines, parallel to backups of some VMs, while the opensearch DB became overwhelmed. The whole system had writes down to <30mb on a 4 drive SATA SSD ZRAID2 and iowait was up in the seconds.

I still have periodic trim on, but I choose my time wisely and do not trust the consumer drives to be 'good'.

 

[Ramalama]

No, that was not my point. When you schedule the trim, you will see a greater slowdown on this drives then you might expect. Depending on the current load this might impact your whole system. I had this issue where the trim would take hours and run along ci pipelines, parallel to backups of some VMs, while the opensearch DB became overwhelmed. The whole system had writes down to <30mb on a 4 drive SATA SSD ZRAID2 and iowait was up in the seconds.

I still have periodic trim on, but I choose my time wisely and do not trust the consumer driver to be 'good'.

I understand, if it helps, here on 2tb 870 evo ssds, trim takes around 5minutes.