Hi all,
i have problems with high IO-Wait Times (30-50%) when writing to the Array directly. Write Speeds at the first 10 Seconds are at 170 MB/s then it drops to < 10 MB/s. Sometimes it also hits 0 Byte/s for a couple Minutes.
The Problems are on SMB, on Terminal, on VM´s, on Mover and on Docker Containers.
Reads from the Array are fine, no IO-Wait.
Writes/Reads from Cache is also fine.
I tried so far:
Added a new Disk to the Array - PreClear Speeds at >20% was also very low.
New SATA-Cables
BIOS Upgrade
Disk Shares instead of User Shares
reconstruct write
On the Screenshots you can see the Speeds while copying files from the Unassigned Device to the Array. Also I took a Screenshot from "top" and from the PreClear report.
I hope you can help me with this.
Thanks!
Setup:
Gigabyte Technology Co., Ltd. W480M VISION W
American Megatrends Inc., Version F20
BIOS dated: Mon 19 Apr 2021
Intel(R) Core(TM) i5-10400 CPU
32 GB RAM
3x ST8000DM004 in Array (1 Parity, 2 Disks)
2x CT1000MX500SSD1 in Cache
1x ST2000LM007 as Unassigned Device