Solution : https://service.sap.com/sap/support/notes/834343 (SAP Service marketplace login required)
Key words :
- rhel4 update 3 + bugzilla fix 161362 - rhel4 update 4 - sles9 sp3, platform / filesystem async io direct io concurrent ioraw, concurrent io automatically enables direct io, additional platform specific required mount options, filesystem mount options mincache=direct, /sbin/mknod /dev/async, symptom slow io performance, yesibm aix 5l jfs, noibm aix 5l jfs2, yesibm aix 5l gpfs
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