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Hi, I have strange problem with HDD enclosure ICY-BOX IB-3640SU3 based on JMicron JMS567 chip. I know whole story about this chip vs Linux especially problems with UASP driver performance, but in my case there is something related rather to hdd's than enclosure. I have two Seagate drives ST4000VX 016-3CV104 (4TB) and ST2000VX 015-2XG102 (2TB). With bigger one I can reach about 200MB/s read and 160MB/s write transfer and this is OK. Even during long time tests speed keeps around this values. When I try to copy/write something using smaller drive I get 30-40MB/s (sometimes 80MB) read and 160MB/s write! Of course both drives connected natively through SATA ports has no such differences in performance.
I'll be very thankful for any suggestions what to check in my system/hardware.
PC info:
Mobo: FUJITSU model: D3413-A1 v: S26361-D3413-A1
CPU: quad core model: Intel Core i5-6500T bits: 64 type: MCP cache: L2: 1024 KiB
Kernel: 6.8.1-arch1-1 #1 SMP PREEMPT_DYNAMIC Sat, 16 Mar 2024 17:15:35 +0000 x86_64 GNU/Linux
USB Bus: Port 003: Dev 002, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
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