
516 DS8800 Performance Monitoring and Tuning
Figure 14-10 FICON throughput comparison
Figure 14-10 shows that zHPF brought significative improvement to the throughput since the
introduction of the new protocol with FICON Express4 channels. The most impressive
improvement is with the FICON Express8S channels running zHPF where the throughput
increases 158% and 108% compared to FICON Express8S without zHPF and FICON
Express8 with zHPF.
Figure 14-11 shows the improvements to the I/O per second. In this case, the improvement
with the FICON Express8S channels running zHPF is 300% and 77% compared to FICON
Express8S without zHPF and FICON Express8 ...