Solution : https://service.sap.com/sap/support/notes/1890444 (SAP Service marketplace login required)
Summary :
This SAP Note addresses performance issues experienced in the HANA system, particularly post-upgrade or server restarts. Symptoms include high system CPU time and frequent 'kondemand' processes. Investigation reveals CPUs not operating at maximum frequency, diagnosed via /proc/cpuinfo and M_HOST_INFORMATION. The issue arises from CPUs set to 'ondemand' mode rather than 'performance'. Resolution involves updating the CPU governor setting globally to 'performance' using either pm-profiler or a simple script command to adjust /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor settings, ensuring alignment with HANA's high-performance requirements.
Key words :
customer component han-db sap hana database priority correction, cat /sys/devices/system/cpu/cpu /cpufreq/scaling_governor, /sys/devices/system/cpu/cpu /cpufreq/scaling_governor, sap applications 11 sp2 1954788 sap hana db, sap notes 1824819 sap hana db, high priority category performance validity, hana monitoring view m_host_information shows, generally slow hana system, / __%pdfstyle%__font-size, __%pdfstyle%__ / } symptom
Related Notes :
| 1824819 | SAP HANA DB: Recommended OS settings for SLES11/SLES4SAP SP2 |
| 1954788 | SAP HANA DB: Recommended OS settings for SLES 11 / SLES for SAP Applications 11 SP3 |