Filter
Top Products
15.22 Software Compression
The rates a customer will achieve will depend upon the system resources available. This test was run in a
very favorable environment to try to achieve the maximum rates. Software compression rates were
gathered using the QSRSAVO API. The CPU used in all compression schemes was near 100%. The
compression algorithm cannot span CPUs so the fact that measurements were performed on a 24-way
system doesn’t affect the software compression scenario.
6539Restore
3:166SaveiV5R2 Using
API DTACPR
*HIGH
3123Restore
2.7:12726SaveiV5R2 Using
API DTACPR
*MED
5737Restore
1.5:110888SaveiV5R2 Using
API DTACPR
*LOW
480507Restore
48020019SaveiV5R2
170457Restore
17013519SaveiV5R1
Software
Compression
Ratio
SR16GBNUMX12GBNSRC1GB
Table 15.22.1 - Measurements on an 840 24-way system 1080 RAID protected DASD Units (GB/HR) 128 GB
mainstore
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
© Copyright IBM Corp. 2008 Chapter 15. Save/Restore Performance 269