Solution : https://service.sap.com/sap/support/notes/2205917 (SAP Service marketplace login required)
Summary :
This SAP Note provides guidance for optimal configuration of SAP HANA on SLES 12 and its derivatives to enhance performance. Key recommendations include disabling Transparent HugePages (THP) to prevent potential performance issues due to HANA's memory management characteristics. Additionally, configuration adjustments are advised for disabling Intel's CPU idle states (C-States) and the intel_idle driver for lower latency. Users should also consider adjusting the Energy Performance Bias (EPB) to enhance throughput in computational scenarios. Furthermore, AutoNUMA should be disabled to prevent performance degradations, particularly in single instance environments. Each setting imposes commands for verification and modification via system command lines or through the YaST2 bootloader interface.
Key words :
components bc-op-lnx-suse suse linux priority recommendations / additional info category consulting validity software componentfrom rel, general information 2309342 suse linux enterprise high availability extension, # cat /sys/devices/system/cpu/cpuidle/current_driver, customer component han-db sap hana database, runtime execute # echo 0 > /proc/sys/kernel/numa_balancing, appending numa_balancing=disabled linux pagecache limit configuring, supported operating systems 1890444 slow hana system due, central note 1310037 suse linux enterprise server 11, cpu power save mode 1523337 sap hana database 1, # cat /sys/kernel/mm/transparent_hugepage/enabled
Related Notes :
| 1557506 | Linux paging improvements |
| 2246163 | |
| 2235581 | SAP HANA: Supported Operating Systems |
| 1890444 | Slow HANA system due to CPU power save mode |
| 1523337 | SAP In-Memory Database 1.0: Central Note |
| 1514967 | SAP HANA 1.0: Central Note |
| 1310037 | SUSE LINUX Enterprise Server 11: Installation notes |
| 171356 | SAP software on Linux: General information |
| 2309342 | SUSE Linux Enterprise High Availability Extension on AWS |
| 1944799 | SAP HANA Guidelines for SLES Operating System Installation |