DirectPath I/O
E812217
DirectPath I/O is a VMware technology that allows virtual machines to directly access physical PCIe devices, bypassing the hypervisor to improve performance and reduce latency.
All labels observed (1)
| Label | Occurrences |
|---|---|
| DirectPath I/O canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9632501 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: DirectPath I/O Context triple: [VMware ESXi, hasFeature, DirectPath I/O]
-
A.
NVMe over Fabrics
NVMe over Fabrics is a network protocol that extends the high-performance NVMe storage interface across various network transports to enable low-latency, scalable access to remote solid-state storage.
-
B.
RDMA
RDMA (Remote Direct Memory Access) is a high-performance networking technology that allows one computer to directly access the memory of another without involving the operating system or CPU, significantly reducing latency and CPU overhead in data transfers.
-
C.
Fast File System
Fast File System is a high-performance disk file system used by AmigaOS to improve speed and efficiency over its earlier standard file system.
-
D.
Intel Omni-Path Architecture
Intel Omni-Path Architecture is a high-performance computing interconnect technology developed by Intel to provide low-latency, high-bandwidth communication for large-scale supercomputing and data center clusters.
-
E.
Fibre Channel over IP
Fibre Channel over IP is a storage networking technology that encapsulates Fibre Channel frames within IP packets to enable long-distance connectivity between Fibre Channel SANs over IP networks.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: DirectPath I/O Target entity description: DirectPath I/O is a VMware technology that allows virtual machines to directly access physical PCIe devices, bypassing the hypervisor to improve performance and reduce latency.
-
A.
NVMe over Fabrics
NVMe over Fabrics is a network protocol that extends the high-performance NVMe storage interface across various network transports to enable low-latency, scalable access to remote solid-state storage.
-
B.
RDMA
RDMA (Remote Direct Memory Access) is a high-performance networking technology that allows one computer to directly access the memory of another without involving the operating system or CPU, significantly reducing latency and CPU overhead in data transfers.
-
C.
Fast File System
Fast File System is a high-performance disk file system used by AmigaOS to improve speed and efficiency over its earlier standard file system.
-
D.
Intel Omni-Path Architecture
Intel Omni-Path Architecture is a high-performance computing interconnect technology developed by Intel to provide low-latency, high-bandwidth communication for large-scale supercomputing and data center clusters.
-
E.
Fibre Channel over IP
Fibre Channel over IP is a storage networking technology that encapsulates Fibre Channel frames within IP packets to enable long-distance connectivity between Fibre Channel SANs over IP networks.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
I/O virtualization feature
ⓘ
VMware technology ⓘ |
| alternativeTo |
emulated virtual devices
ⓘ
paravirtualized device drivers ⓘ |
| assignedTo | individual virtual machines ⓘ |
| associatedWith | bare-metal hypervisor architecture ⓘ |
| benefits | lower CPU overhead for I/O operations ⓘ |
| bypasses | hypervisor I/O stack ⓘ |
| category |
hardware-assisted virtualization
ⓘ
server virtualization feature ⓘ |
| configuredAt | ESXi host level ⓘ |
| developedBy | VMware ⓘ |
| documentedIn | VMware vSphere documentation ⓘ |
| enables | direct access to physical PCIe devices by virtual machines ⓘ |
| improves | throughput for I/O intensive workloads ⓘ |
| limits | ability to snapshot or clone VMs using passthrough devices in some scenarios ⓘ |
| partOf | VMware vSphere ⓘ |
| primaryGoal |
improve I/O performance
ⓘ
reduce latency ⓘ |
| relatedTo |
PCI passthrough
ⓘ
SR-IOV ⓘ device virtualization ⓘ |
| requires |
BIOS or UEFI support for VT-d or AMD-Vi
ⓘ
IOMMU support in CPU and chipset ⓘ compatible physical PCI or PCIe device ⓘ device driver inside guest operating system ⓘ |
| runsOn | VMware ESXi ⓘ |
| scope | per-VM device assignment ⓘ |
| supports | direct mapping of PCI functions into a VM ⓘ |
| supportsEnvironment |
data center virtualization
ⓘ
high-performance computing workloads ⓘ network function virtualization workloads ⓘ |
| tradeOff |
reduced manageability compared to virtual devices
ⓘ
reduced vSphere features such as vMotion for VMs using passthrough ⓘ |
| typicalUseCase |
high-performance networking
ⓘ
high-performance storage ⓘ specialized PCIe hardware access ⓘ |
| usedWith | SR-IOV capable network adapters ⓘ |
| usesStandard |
AMD-Vi
ⓘ
IOMMU ⓘ Intel VT-d ⓘ PCI passthrough ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: DirectPath I/O Description of subject: DirectPath I/O is a VMware technology that allows virtual machines to directly access physical PCIe devices, bypassing the hypervisor to improve performance and reduce latency.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.