| Autor: |
Carpen-Amarie, Maria, Vavouliotis, Georgios, Tovletoglou, Konstantinos, Grot, Boris, Mueller, Rene |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Zdroj: |
Carpen-Amarie, M, Vavouliotis, G, Tovletoglou, K, Grot, B & Mueller, R 2023, Concurrent GCs and Modern Java Workloads : A Cache Perspective . in Proceedings of the 2023 ACM SIGPLAN International Symposium on Memory Management . pp. 71-84, 2023 ACM SIGPLAN International Symposium on Memory Management, Orlando, Florida, United States, 18/06/23 . https://doi.org/10.1145/3591195.3595269 |
| DOI: |
10.1145/3591195.3595269 |
| Popis: |
The garbage collector (GC) is a crucial component of language runtimes, offering correctness guarantees and high productivity in exchange for a run-time overhead. Concurrent collectors run alongside application threads (mutators) and share CPU resources. A likely point of contention between mutators and GC threads and, consequently, a potential overhead source is the shared last-level cache (LLC). This work builds on the hypothesis that the cache pollution caused by concurrent GCs hurts application performance. We validate this hypothesis with a cache-sensitive Java micro-benchmark. We find that concurrent GC activity may slow down the application by up to 3 × and increase the LLC misses by 3 orders of magnitude. However, when we extend our analysis to a suite of benchmarks representative for today’s server workloads (Renaissance), we find that only 5 out of 23 benchmarks show a statistically significant correlation between GC-induced cache pollution and performance. Even for these, the performance overhead of GC does not exceed 10 %. Based on further analysis, we conclude that the lower impact of the GC on the performance of Renaissance benchmarks is due to their lack of sensitivity to LLC capacity |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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