https://github.com/bryanmikaelian/clj-virtual-threads
An experiment with Java21 Virtual Threads and Clojure
https://github.com/bryanmikaelian/clj-virtual-threads
clojure jvm virtual-threads-java-21
Last synced: 5 months ago
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An experiment with Java21 Virtual Threads and Clojure
- Host: GitHub
- URL: https://github.com/bryanmikaelian/clj-virtual-threads
- Owner: bryanmikaelian
- Created: 2024-07-30T20:41:41.000Z (11 months ago)
- Default Branch: main
- Last Pushed: 2024-08-19T14:52:01.000Z (11 months ago)
- Last Synced: 2025-02-02T11:05:54.260Z (5 months ago)
- Topics: clojure, jvm, virtual-threads-java-21
- Language: Clojure
- Homepage:
- Size: 16.6 KB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# clj-virtual-threads
An experiment with Java21 Virtual Threads and Clojure. Both examples just update an `atom` counter over 100000 threads, comparing the execution time between a virtual thread and a "real" thread.
## Disclaimer
This was a very quick thought experiment but there are some issues. Take these numbers with a grain of salt [See this hacker news thread](https://news.ycombinator.com/item?id=41127344)
## Running
Using the Clojure [CLI](https://clojure.org/guides/deps_and_cli), you can run this program like so:
```sh
clj src/main.clj
```
## Results
### M3 Mac
```
count: 100000
virtual start time (ms): 1722446540075
virtual end time (ms): 1722446540306
virtual elapsed time (ms): 231
count: 100000
real start time (ms): 1722446540311
real end time (ms): 1722446543667
real elapsed time (ms): 3356
```
### Intel Mac
```
count: 100000
virtual start time (ms): 1722449512852
virtual end time (ms): 1722449513318
virtual elapsed time (ms): 466
count: 100000
real start time (ms): 1722449513330
real end time (ms): 1722449520618
real elapsed time (ms): 7288
```