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The use of async I/O improves the throughput in any case. When using a file
system the good result from async I/O can be further improved in combination
with direct I/O (setall).
The file system ext3 (I/O option 'setall ext3') has the same
performance as ext2 (I/O option 'setall') for this workload.
For disk I/O setup optimization, see Disk I/O.
- IBM eServer zSeries 900 (2064-216)
- LPAR with 12 CPUs, 8GB memory
- Novell/SUSE SLES 9 + SP1 for IBM zSeries (64-bit),
kernel 2.6.5-7.151
- Oracle 10g (10.1.0.3.0, 64-bit)
- Benchmark Oracle OLTP
- Database data Logical Volume (LV): 4 CHPIDs, 4
host adapters, FCP/SCSI, ext2/etx3 filesystem or raw
devices
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