> Can I get a review of this documentation update to clarify the usage of > GetCpuLoad (and inherently deprecated GetSystemCpuLoad) and GetProcessCpuLoad. > > Calling either of these methods in quick succession can lead to > unrepresentative results due to too few data points. > > This behavior is easy to reproduce on at least Linux (Windows implementation > enforces a 500 ticks duration); when calling GetCpuLoad repeatedly CPU load > values of either 0, 0.5, or 1 will be returned. > > double cpuLoad1 = getCpuLoad(); > double cpuLoad2 = getCpuLoad(); // not enough ticks has passed to give > representative values > > Worth noting is that this holds true even if getSystemCpuLoad() is called. > > double cpuLoad1 = getCpuLoad(); > double cpuLoad2 = getSystemCpuLoad(); // not enough ticks has passed to > give representative values, since getSystemCpuLoad effectively calls > getCpuLoad.
Joakim Nordström has updated the pull request incrementally with one additional commit since the last revision: Added implNote and made some re-arrangements ------------- Changes: - all: https://git.openjdk.org/jdk/pull/20546/files - new: https://git.openjdk.org/jdk/pull/20546/files/07b0faa6..af69aa88 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=20546&range=02 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20546&range=01-02 Stats: 51 lines in 1 file changed: 27 ins; 3 del; 21 mod Patch: https://git.openjdk.org/jdk/pull/20546.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20546/head:pull/20546 PR: https://git.openjdk.org/jdk/pull/20546
