Shenandoah GC
E341112
HotSpot JVM garbage collector
concurrent garbage collector
garbage collector
low-pause garbage collector
Shenandoah GC is a low-pause, concurrent garbage collector for the HotSpot JVM designed to minimize application pause times by performing most of its work concurrently with running Java threads.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Shenandoah GC canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T3245041 — 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: Shenandoah GC Context triple: [HotSpot JVM, notableGarbageCollector, Shenandoah GC]
-
A.
East Potomac Golf Links
East Potomac Golf Links is a historic public golf facility in Washington, D.C., known for its multiple courses, views of national monuments, and role as a popular recreational destination.
-
B.
Winchester Country Club
Winchester Country Club is a private golf and social club located in the suburban town of Winchester, Massachusetts.
-
C.
George Wright Golf Course
George Wright Golf Course is a historic, municipally owned 18-hole golf course in Boston known for its classic Donald Ross design and scenic, park-like setting.
-
D.
Rock Creek Golf Course
Rock Creek Golf Course is a public golf course located within Washington, D.C.’s Rock Creek Park, known for its wooded, natural setting and historic urban parkland layout.
-
E.
Laurel Hill Golf Club
Laurel Hill Golf Club is a public championship golf course in Lorton, Virginia, known for its challenging layout and having hosted prominent amateur tournaments.
- 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: Shenandoah GC Target entity description: Shenandoah GC is a low-pause, concurrent garbage collector for the HotSpot JVM designed to minimize application pause times by performing most of its work concurrently with running Java threads.
-
A.
East Potomac Golf Links
East Potomac Golf Links is a historic public golf facility in Washington, D.C., known for its multiple courses, views of national monuments, and role as a popular recreational destination.
-
B.
Winchester Country Club
Winchester Country Club is a private golf and social club located in the suburban town of Winchester, Massachusetts.
-
C.
George Wright Golf Course
George Wright Golf Course is a historic, municipally owned 18-hole golf course in Boston known for its classic Donald Ross design and scenic, park-like setting.
-
D.
Rock Creek Golf Course
Rock Creek Golf Course is a public golf course located within Washington, D.C.’s Rock Creek Park, known for its wooded, natural setting and historic urban parkland layout.
-
E.
Laurel Hill Golf Club
Laurel Hill Golf Club is a public championship golf course in Lorton, Virginia, known for its challenging layout and having hosted prominent amateur tournaments.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
HotSpot JVM garbage collector
ⓘ
concurrent garbage collector ⓘ garbage collector ⓘ low-pause garbage collector ⓘ |
| category |
Java virtual machine technology
ⓘ
automatic garbage collection ⓘ memory management ⓘ |
| comparedWith |
G1 GC
ⓘ
ZGC ⓘ |
| configuration | enabled via JVM options ⓘ |
| designedFor | HotSpot JVM ⓘ |
| documentation | OpenJDK Shenandoah GC documentation ⓘ |
| executionModel | mostly concurrent with running Java threads ⓘ |
| hasProperty |
compacting collector
ⓘ
concurrent evacuation of live objects ⓘ low pause times independent of heap size (within design limits) ⓘ region-based heap layout ⓘ stop-the-world pauses limited mainly to brief synchronization phases ⓘ supports large heaps ⓘ supports multi-core systems ⓘ |
| introducedIn | OpenJDK ⓘ |
| license | GPL-compatible (via OpenJDK licensing) ⓘ |
| maintainedBy |
OpenJDK
ⓘ
surface form:
OpenJDK community
Red Hat ⓘ |
| operatesOn | Java heap ⓘ |
| optimizationFor | throughput with low latency constraints ⓘ |
| origin | developed initially by Red Hat for OpenJDK ⓘ |
| performs |
concurrent compaction
ⓘ
concurrent heap evacuation ⓘ concurrent marking ⓘ concurrent reference updating ⓘ |
| primaryGoal | minimize application pause times ⓘ |
| programmingLanguage | Java ⓘ |
| runtimeEnvironment | Java Virtual Machine ⓘ |
| supports |
concurrent class unloading (in supported JDK versions)
ⓘ
large heap applications ⓘ latency-sensitive applications ⓘ server-style Java workloads ⓘ string deduplication (in supported JDK versions) ⓘ |
| targetMetric | low latency ⓘ |
| tradeOff | higher CPU overhead for lower pause times ⓘ |
| usesTechnique |
brooks-style forwarding pointers (or similar forwarding mechanism)
ⓘ
concurrent compaction with forwarding ⓘ read barriers ⓘ region-based collection ⓘ |
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: Shenandoah GC Description of subject: Shenandoah GC is a low-pause, concurrent garbage collector for the HotSpot JVM designed to minimize application pause times by performing most of its work concurrently with running Java threads.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.