Encountering error "Assertion 'isolated_cores are set' failed" when switching to realtime or cpu-partitioning tuned profile in RHEL
Issue
-
Switching to the tuned profile
realtime
orcpu-paritioning
using thetuned-adm profile
command resulted in the errorAssertion 'isolated_cores are set'
. -
The error appears as below:
# tuned-adm profile realtime
Cannot load profile(s) 'realtime': Assertion 'isolated_cores are set' failed.
# tuned-adm profile cpu-partitioning
Cannot load profile(s) 'cpu-partitioning': Assertion 'isolated_cores are set' failed.
Environment
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Realtime or cpu-partitioning tuned profile
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