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fix: Retry cgroup discovery after a failed /proc read - #21
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Pijukatel
approved these changes
Nov 9, 2026
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Description
Discovery reads
/proc/self/mountinfoand/proc/self/cgrouponce and caches the answer. AnyOSErrororValueErrorfrom those reads became "no mechanism here", and that answer was cached as well. OneEMFILEon the first lookup therefore left every limit atNone, with*_METRICS_UNAVAILABLE, untilclear_cache(). That held even after file descriptors were free again.