ata3: limiting SATA link speed to 1.5 Gbps ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) In the AMD controller, link fails and switch to PIO4 UDMA/100 in last. In the ASMEDIA SATA II 6Gbps (now disabled), read errors and heavy freezes (even filesystem damage) Samsung SSD 850 EVO 500GB (firmware EMT02B6Q) SATA controller: Advanced Micro Devices, Inc. Here are some more links that may (or may not) be the same thing: ioengine=libaio -iodepth=32 -direct=1 -runtime=10m -time_based=1 The issue happens on both 4.15.0-43-generic and 4.18.0-13-generic kernels and in my case I was using a simple fio job to make the issue occur:įio -name=test -readonly -rw=randread -filename /dev/sdb -bs=32k \
The SATA controller in the HP MicroServer N36L seeing the issue is an AMD SB7x0/SB8x0/SB9x0. I think I'm seeing this issue (Samsung 860 SSD triggers 'WRITE FPDMA QUEUED' errors in kernel log/dmesg under heavy I/O causing terrible performance and unreliable unless NCQ is disabled) too.
