Solution : https://service.sap.com/sap/support/notes/570375 (SAP Service marketplace login required)
Summary :
This SAP Note addresses queries concerning the required swap space and maximum paging activity for Sun Solaris systems. It elucidates the intertwined nature of file system cache and the virtual memory system, explaining that high page in and out values do not necessarily indicate memory bottlenecks. The documentation highlights Solaris memory architecture, specifically the dynamic allocation for the file system cache which adjusts based on usage. Techniques to detect memory bottlenecks are detailed, including monitoring tools and specific indicators like high scan rates in 'vmstat'. Steps to address potential performance issues and lack of virtual memory are provided, suggesting system configurations and resource management strategies as solutions.
Key words :
terms swap space paging memory sun solaris reason, low pi+po rates, command show values greater, monitor swap space usage, detect increased processing time, file system cache increases, file system cache pages, longer db request times, sun solaris solution, priority paging algorithm
Related Notes :
| 1404134 | Compilation fails with memory issue in Web service component |
| 397521 | SAP Software Installation: not enough swap space |
| 153641 | Swap space requirement for R/3 64-bit kernel |
| 146289 | Parameter Recommendations for 64-Bit SAP Kernel |
| 124199 | ST06 display - Paged in [Kb/h] / Paged out [Kb/h] |
| 103747 | Performance: Parameter recommendations as of Release 4.0 |
| 63906 | Explanation for SWAP SPACE sizes in ST06 |
| 21960 | Several instances/systems on one UNIX computer |