OSHI provides output directly via Java methods for each of its interfaces. By periodically polling dynamic information (e.g., every second), users can calculate and track changes.
You can see more examples and run the SystemInfoTest and see the full output for your system by cloning the project and building it with Maven.
In addition, the oshi-demo module includes an OshiGui class implementing a basic Swing GUI offering suggestions for potential visualizations using OSHI in a UI, monitoring, or alerting application, as shown below. For a more advanced GUI based on this approach, see the MooInfo project.
General information about the operating system and computer system hardware:
By measuring ticks (user, nice, system, idle, iowait, and irq) between time intervals, percent usage can be calculated. Per-processor information is also provided.
Process information including CPU and memory per process is available.
Memory and swapfile information is available.
Statistics for the system battery are provided:
Power Sources:
Name: InternalBattery-0, Device Name: bq20z451,
RemainingCapacityPercent: 100.0%, Time Remaining: 5:42, Time Remaining Instant: 5:42,
Power Usage Rate: -16045.216mW, Voltage: 12.694V, Amperage: -1264.0mA,
Power OnLine: false, Charging: false, Discharging: true,
Capacity Units: MAH, Current Capacity: 7213, Max Capacity: 7315, Design Capacity: 7336,
Cycle Count: 6, Chemistry: LIon, Manufacture Date: 2019-06-11, Manufacturer: SMP,
SerialNumber: D869243A2U3J65JAB, Temperature: 30.46°C
The EDID for each Display is provided. This can be parsed with various utilities for detailed information. OSHI provides a summary of selected data.
Displays:
Display 0:
Manuf. ID=SAM, Product ID=2ad, Analog, Serial=HA19, ManufDate=3/2008, EDID v1.3
41 x 27 cm (16.1 x 10.6 in)
Preferred Timing: Clock 106MHz, Active Pixels 3840x2880
Range Limits: Field Rate 56-75 Hz vertical, 30-81 Hz horizontal, Max clock: 140 MHz
Monitor Name: SyncMaster
Serial Number: H9FQ345476
Display 1:
Manuf. ID=SAM, Product ID=226, Analog, Serial=HA19, ManufDate=4/2007, EDID v1.3
41 x 26 cm (16.1 x 10.2 in)
Preferred Timing: Clock 106MHz, Active Pixels 3840x2880
Range Limits: Field Rate 56-75 Hz vertical, 30-81 Hz horizontal, Max clock: 140 MHz
Monitor Name: SyncMaster
Serial Number: HMCP431880
Disks and usage (reads, writes, transfer times) are shown, and partitions can be mapped to filesystems.
Disks:
disk0: (model: SanDisk Ultra II 960GB - S/N: 161008800550) size: 960.2 GB, reads: 1053132 (23.0 GiB), writes: 243792 (11.1 GiB), xfer: 73424854 ms
|-- disk0s1: EFI (EFI System Partition) Maj:Min=1:1, size: 209.7 MB
|-- disk0s2: Macintosh HD (Macintosh SSD) Maj:Min=1:2, size: 959.3 GB @ /
disk1: (model: Disk Image - S/N: ) size: 960.0 GB, reads: 3678 (60.0 MiB), writes: 281 (8.6 MiB), xfer: 213627 ms
|-- disk1s1: EFI (EFI System Partition) Maj:Min=1:4, size: 209.7 MB
|-- disk1s2: Dropbox (disk image) Maj:Min=1:5, size: 959.7 GB @ /Volumes/Dropbox
Sensor readings are available for some hardware (see notes in the API).
Sensors:
CPU Temperature: 69.8°C
Fan Speeds:[4685, 4687]
CPU Voltage: 3.9V
Attached USB devices can be listed:
USB Devices:
AppleUSBEHCI
|-- Root Hub Simulation Simulation (Apple Inc.)
|-- IOUSBHostDevice
|-- IR Receiver (Apple Computer, Inc.)
|-- USB Receiver (Logitech)
AppleUSBEHCI
|-- Root Hub Simulation Simulation (Apple Inc.)
|-- FaceTime HD Camera (Built-in) (Apple Inc.) [s/n: DJHB1V077FDH5HL0]
|-- IOUSBHostDevice
|-- Apple Internal Keyboard / Trackpad (Apple Inc.)
|-- BRCM2070 Hub (Apple Inc.)
|-- Bluetooth USB Host Controller (Apple Inc.)
AppleUSBEHCI
|-- Root Hub Simulation Simulation (Apple Inc.)
|-- IOUSBHostDevice
|-- Apple Thunderbolt Display (Apple Inc.) [s/n: 162C0C25]
|-- Display Audio (Apple Inc.) [s/n: 162C0C25]
|-- FaceTime HD Camera (Display) (Apple Inc.) [s/n: CCGCAN000TDJ7DFX]
|-- USB2.0 Hub
|-- ANT USBStick2 (Dynastream Innovations) [s/n: 051]
|-- Fitbit Base Station (Fitbit Inc.)