Rapid write speed dropoff

[Forerunner23]

I've been looking around the forums through old post for a fix for this. Initially when writing to Unraid (6.8.3) from my Win10 machine I get ~100Mb/s (200 when I added a switch between my NAS and router) and then it drops to ~15Mb/s after a couple seconds. I have turbo write, a cache disk and write cache enabled. I tried disabling using cache on my share. I have no parity drive at the moment (trying out NAS/unraid). I have also switched cables (cat 6 and cat5e). Iperf3 showed an average speed of ~170Mb/s from my machine to unraid. Any pointers? The past week trying out unRAID has been super rough from a user point of view (including spending the better part of a week troubleshooting unRAID hanging every time I ran preclear roughly 8 hours in). Just as I see a light at the end of the tunnel, in so far as getting everything up and running, I get hit with this speed problem.

aegis-diagnostics-20201001-0847.zip

Edited October 1, 2020 by Forerunner23
Unit typo.

[JorgeB]

8 hours ago, Forerunner23 said:

Iperf3 showed an average speed of ~170MB/s

Do you mean 170Mb/s or do you have 10Gb Ethernet?

[Forerunner23]

3 hours ago, JorgeB said:

Do you mean 170Mb/s or do you have 10Gb Ethernet?

As much as I wish I did, it was a typo, fixed.

[JorgeB]

11 hours ago, Forerunner23 said:

Iperf3 showed an average speed of ~170Mb/s from my machine to unraid. Any pointers?

This suggests a LAN problem, try different NICs, cables, switch, source computer, etc, you should get very close to line speed with iperf on gigabit.