Werk #19418: Fix async plugin execution being skipped at the refresh interval boundary

Component	Agent bakery
Title	Fix async plugin execution being skipped at the refresh interval boundary
Date	Apr 15, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.6.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.5.0p1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p27 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

When running agent plugins, local checks, or MRPE checks in async mode, the configured refresh interval was not always honored. The cache staleness check used a strict greater-than comparison (-gt) against the refresh interval, which means that when the cache age was exactly equal to the interval, the plugin was not executed. Only on the next agent cycle, when the cache age exceeded the refresh interval by at least one second, the plugin would be executed, effectively doubling the intended execution frequency.

With this werk the plugin is now re-executed as soon as the cache age reaches the configured refresh interval.

This applies to all Unix agent variants (Linux, AIX, FreeBSD, OpenWrt, Solaris) and to the mk_oracle plugin.

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