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domainnorlinder.nu
summaryThe article highlights the need for improved metrics to measure infrastructure efficiency, specifically focusing on collector CPU overhead. It introduces the new `MemoryMXBean.getTotalGcCpuTime` API in Java 26 OpenJDK 26, which allows for precise quantification of this overhead, enabling better informed decisions about the trade-off between memory and CPU usage. The current standard method for measuring thread CPU time on Linux is presented as an inefficient, multi-step process.
titleJonas Norlinder
descriptionOracle JVM Engineer. GC researcher. Empirical research and deep dives into the OpenJDK HotSpot mainline, ZGC, and Java performance.
keywordsmemory, performance, time, java, heap, trade, modern, collectors, thread, trash, take, objects, compilers, type, home, research, garbage
upstreams
downstreams
nslookupA 104.21.10.112, A 172.67.131.117
created2026-03-09
updated2026-03-09
summarizedNone

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