kernel: perf interrupt took too long, lowering kernel.perf_event_max_sample_rate to xxxx
(Doc ID 2279835.1)
Last updated on AUGUST 04, 2018
Applies to:Linux OS - Version Oracle Linux 5.0 and later
Information in this document applies to any platform.
On : Oracle Linux 6.9 with Unbreakable Enterprise Kernel [2.6.39] version, Performance Tuning
We see below messages in system logs:
kernel: [1317995.167632] perf interrupt took too long (35935 > 31250), lowering kernel.perf_event_max_sample_rate to 4000
kernel: [1324020.246308] perf interrupt took too long (62931 > 62500), lowering kernel.perf_event_max_sample_rate to 2000
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