[SOLVED] High IO Delay

[Whattteva]

I don't have a particularly write-heavy environment, which is why the crappy disks I currently have have been working fine for the last 3 months (save for the few times I get spikes).

Thanks all for all the feedbacks!!!
I'll update when I get them up and running.

 

[Whattteva]

UPDATE:
I got the new Intel SSD's today and it seems to indeed be the issue. IO delay problems are now gone. Thanks for all the help!

 

[mcg1103]

UPDATE:
I got the new Intel SSD's today and it seems to indeed be the issue. IO delay problems are now gone. Thanks for all the help!

It seems the new drives are SATA. Is that correct? It seems all the recomendations are for NVMe drives.

 

[Whattteva]

It seems the new drives are SATA. Is that correct? It seems all the recomendations are for NVMe drives.

Wasn't aware of that, but the SATA drives do the job. NVMe probably would've been overkill. I think the main problem is just that my drives didn't have PLP, so sync write performance sucks.

 

[mcg1103]

Wasn't aware of that, but the SATA drives do the job. NVMe probably would've been overkill. I think the main problem is just that my drives didn't have PLP, so sync write performance sucks.

These seem to be MLC. I am suffering the same fate. I have a cluster with Samsung EVO drives. Also consumer grade and the same thing is happening. Any sustained write causes the machine to be unusable until the write is complete. Like migrating VM's or changing ZFS storage. I guess we will try a couple of these since SATA will be easier than NVMe for the machines that we are currently using.

Like in your situation, most of the time this setup works fine.... just when doing a big sync.

Thanks for responding so quickly.