Oshi is a free JNA-based (native) operating system information library for Java. It doesn't require any additional native DLLs and aims to provide a cross-platform implementation to retrieve system information, such as version, memory, CPU, disk, battery, etc.
Oshi is a young project. We'd like you to contribute ports, and help implement more methods, and suggest new features. Read the project intro.
- Windows
- Linux
- Mac OS X
- Manufacturer (GNU/Linux, Microsoft, Apple)
- OS (Linux Distribution, Windows, Mac OS X)
- OS Version (Version number, Codename, Build)
- How much physical/available (free+reclaimable) RAM
- How many Logical CPUs (core * thread)
- CPU uptime, load % and tick counters
- Battery state (% capacity, time remaining)
- File stores (usable and total space)
Here's sample tests output:
For Windows:
Microsoft Windows 7
2 CPU(s):
Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz
Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz
Identifier: Intel64 Family 6 Model 42 Stepping 7
Memory: 532.1 MB/2.0 GB
Uptime: 12 days, 11:00:17
CPU ticks @ 0 sec:[26579029, 0, 21746695, 549739287]
CPU ticks @ 1 sec:[26579060, 0, 21746695, 549740254]
User: 3.1% Nice: 0.0% System: 0.0% Idle: 96.9%
CPU load: 3.3% (counting ticks)
CPU load: 3.2% (OS MXBean)
CPU load average: N/A
CPU load per processor: 3.8% 4.0%
Power: 2:42 remaining
System Battery @ 97.0%
File System:
Floppy Disk Drive (A:) (Floppy Disk Drive) 1.1 MB of 1.4 MB free (82.4%)
Local Disk (C:) (Local Disk) 27.3 GB of 64.0 GB free (42.7%)
D:\ (CD Drive) 0 bytes of 0 bytes free
MobileBackups on 'psf' (W:) (Network Drive) 0 bytes of 697.5 GB free (0.0%)
MacData on 'psf' (X:) (Network Drive) 3.4 GB of 4.4 GB free (77.4%)
Home on 'psf' (Y:) (Network Drive) 121.7 GB of 697.5 GB free (17.4%)
Host on 'psf' (Z:) (Network Drive) 121.7 GB of 697.5 GB free (17.4%)
For Linux:
GNU/Linux Fedora 20 (Heisenbug)
8 CPU(s):
Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
Identifier: Intel64 Family 6 Model 42 Stepping 7
Memory: 21.0 GB/31.0 GB
Uptime: 12 days, 11:00:17
CPU ticks @ 0 sec:[967282, 15484, 195343, 124216619]
CPU ticks @ 1 sec:[967308, 15484, 195346, 124216790]
User: 13.0% Nice: 0.0% System: 1.5% Idle: 85.5%
CPU load: 14.5% (counting ticks)
CPU load: 14.3% (OS MXBean)
CPU load average: 1.13
CPU load per processor: 21.4% 4.9% 19.5% 4.0% 27.5% 4.6% 19.9% 4.8%
Power: 2:42 remaining
BAT0 @ 97.0%
File System:
/ (Local Disk) 52.8 GB of 60.9 GB free (86.7%)
Home (Mount Point) 134.5 GB of 697.5 GB free (19.3%)
MacData (Mount Point) 3.4 GB of 4.4 GB free (77.4%)
MobileBackups (Mount Point) 0 bytes of 697.5 GB free (0.0%)
For Mac OS X:
Apple Mac OS X 10.10.4 (Yosemite) build 14E36b
4 CPU(s):
Intel(R) Core(TM) i7-2820QM CPU @ 2.30GHz
Intel(R) Core(TM) i7-2820QM CPU @ 2.30GHz
Intel(R) Core(TM) i7-2820QM CPU @ 2.30GHz
Intel(R) Core(TM) i7-2820QM CPU @ 2.30GHz
Identifier: Intel64 Family 6 Model 42 Stepping 7
Memory: 17.3 MB/4 GB
Uptime: 12 days, 11:00:17
CPU ticks @ 0 sec:[15973594, 0, 21796209, 286595204]
CPU ticks @ 1 sec:[15973619, 0, 21796271, 286595920]
User: 3.1% Nice: 0.0% System: 7.7% Idle: 89.2%
CPU load: 11.3% (counting ticks)
CPU load: 11.4% (OS MXBean)
CPU load average: 1.48
CPU load per processor: 25.2% 1.9% 17.3% 1.9%
Power: 2:42 remaining
InternalBattery-0 @ 96.0%
File System:
Data (Network Drive) 15.7 GB of 1.8 TiB free (0.8%)
MacData (Volume) 3.4 GB of 4.4 GB free (77.4%)
Macintosh HD (/) (Local Disk) 134.4 GB of 697.5 GB free (19.3%)
MobileBackups (Network Drive) 0 bytes of 697.5 GB free (0.0%)
Time Machine Backups (Local Disk) 134.4 GB of 697.5 GB free (19.3%)
- Sigar:
- Sigar uses JNI which requires a native DLL to be installed. Oshi uses JNA and doesn't require a native DLL to be installed.
- Sigar is licensed under Apache 2.0 license. Oshi is distributed under the EPL license.
- The last stable release of Sigar (1.6.4) was in 2010. Oshi is under active development as-of 2015.
- OperatingSystemMXBean
- The
com.sun.managementMXBean may not be availabile in non-Oracle JVMs. - The MXBean has very few methods that address system-wide statistics.
- Oshi provides significantly more information than the OperatingSystemMXBean
- The
This project is licensed under the Eclipse Public License 1.0.