Thanks @acquacow for taking a look. Here's the fio-status -a output
Here's the output of fio-pci-check, it looks like it's a direct root port connection, no switching/bifurcation.
Code:
Found 1 VSL driver package:
4.3.7 build 1205 Storport Driver: loaded
Found 2 ioMemory devices in this system
Adapter: ioMono (driver 4.3.7)
Cisco UCS 1000GB MLC Fusion ioMemory PX, Product Number:PFIO1000MP, SN:aaabbbccc
ioMemory Adapter Controller, PN:PFIO1000MP
Product UUID:366c7cac-0c6a-5fc4-a688-65d66ccc683a
PCIe Bus voltage: avg 11.98V
PCIe Bus current: avg 0.71A
PCIe Bus power: avg 8.48W
PCIe Power limit threshold: 24.75W
PCIe slot available power: unavailable
Connected ioMemory modules:
fct0: 05:00.0, Product Number:PFIO1000MP, SN:aaabbbccc
fct0 Attached
ioMemory Adapter Controller, Product Number:PFIO1000MP, SN:aaabbbccc
ioMemory Adapter Controller, PN:PFIO1000MP
Microcode Versions: App:0.0.44.0
Powerloss protection: protected
PCI:05:00.0
Vendor:1aed, Device:3002, Sub vendor:1137, Sub device:13d
Firmware v8.9.9, rev 20200113 Public
1000.00 GBytes device size
Format: v501, 1953125000 sectors of 512 bytes
PCIe slot available power: 25.00W
PCIe negotiated link: 8 lanes at 5.0 Gt/sec each, 4000.00 MBytes/sec total
Internal temperature: 41.34 degC, max 53.15 degC
Internal voltage: avg 1.01V, max 1.02V
Aux voltage: avg 1.79V, max 1.81V
Reserve space status: Healthy; Reserves: 100.00%, warn at 10.00%
Active media: 100.00%
Rated PBW: 12.00 PB, 99.99% remaining
Lifetime data volumes:
Physical bytes written: 1,169,261,160,616
Physical bytes read : 974,149,019,424
RAM usage:
Current: 397,517,184 bytes
Peak : 444,698,944 bytes
Contained Virtual Partitions:
fct0: ID:0, UUID:629a7c7f-26e9-4fd1-af21-b8d69c4129a5
fct0 State: Online, Type: block device, Device: \\?\PhysicalDrive4
ID:0, UUID:629a7c7f-26e9-4fd1-af21-b8d69c4129a5
1000.00 GBytes device size
Format: 1953125000 sectors of 512 bytes
Sectors In Use: 234801
Max Physical Sectors Allowed: 1953125000
Min Physical Sectors Reserved: 1953125000
Adapter: ioMono (driver 4.3.7)
Cisco UCS 1000GB MLC Fusion ioMemory PX, Product Number:PFIO1000MP, SN:dddeeefff
ioMemory Adapter Controller, PN:PFIO1000MP
Product UUID:5e11d310-2e58-5671-891a-3a10d19a2c52
PCIe Bus voltage: avg 11.94V
PCIe Bus current: avg 0.68A
PCIe Bus power: avg 8.16W
PCIe Power limit threshold: 24.75W
PCIe slot available power: unavailable
Connected ioMemory modules:
fct1: 04:00.0, Product Number:PFIO1000MP, SN:dddeeefff
fct1 Attached
ioMemory Adapter Controller, Product Number:PFIO1000MP, SN:dddeeefff
ioMemory Adapter Controller, PN:PFIO1000MP
Microcode Versions: App:0.0.44.0
Powerloss protection: protected
PCI:04:00.0
Vendor:1aed, Device:3002, Sub vendor:1137, Sub device:13d
Firmware v8.9.9, rev 20200113 Public
1000.00 GBytes device size
Format: v501, 1953125000 sectors of 512 bytes
PCIe slot available power: 25.00W
PCIe negotiated link: 8 lanes at 5.0 Gt/sec each, 4000.00 MBytes/sec total
Internal temperature: 39.37 degC, max 49.71 degC
Internal voltage: avg 1.01V, max 1.02V
Aux voltage: avg 1.79V, max 1.81V
Reserve space status: Healthy; Reserves: 100.00%, warn at 10.00%
Active media: 100.00%
Rated PBW: 12.00 PB, 99.99% remaining
Lifetime data volumes:
Physical bytes written: 867,755,546,376
Physical bytes read : 767,244,060,576
RAM usage:
Current: 448,399,104 bytes
Peak : 449,288,704 bytes
Contained Virtual Partitions:
fct1: ID:0, UUID:e62248ab-d9e7-4fa2-a03f-b3f4d667b6bd
fct1 State: Online, Type: block device, Device: \\?\PhysicalDrive3
ID:0, UUID:e62248ab-d9e7-4fa2-a03f-b3f4d667b6bd
1000.00 GBytes device size
Format: 1953125000 sectors of 512 bytes
Sectors In Use: 234801
Max Physical Sectors Allowed: 1953125000
Min Physical Sectors Reserved: 1953125000
Code:
Root Bridge PCIe 26250 MB/sec needed max
DMI Device
Bridge 0000:00:02.00 (04-04) (8086:3c04)
PCI Express Root Port
Needed 4000 MB/sec Avail 4000 MB/sec
ioDrive3 0000:04:00.0 (3002) Firmware 20200113
Fusion ioMemory VSL4 Device
Slot Power limit: 25.0W (25000mw)
Bridge 0000:00:02.02 (05-05) (8086:3c06)
PCI Express Root Port
Needed 4000 MB/sec Avail 4000 MB/sec
ioDrive3 0000:05:00.0 (3002) Firmware 20200113
Fusion ioMemory VSL4 Device
Slot Power limit: 25.0W (25000mw)