PROC SORT Alternative - PROC MFX (formerly PROC SYNCSORT)

PROC MFX is a high-performance replacement for the SAS-provided procedure PROC SORT. Compared to PROC SORT, PROC MFX significantly reduces the resources required for sorting within SAS applications.



  • PROC MFX:
  • Reduces elapsed time for running your SAS applications
  • Improves your system throughput and response time
  • Installs without changing your existing programs that use PROC SORT


Benchmark tests show dramatic performance advantages when PROC MFX is used instead of PROC SORT:

  • 45% reduction in task CPU time
  • 79% in I/Os
  • 25% in elapsed time


PROC MFX achieves such incredible gains by providing a direct interface between SAS programs and SyncSort MVS or MFX for z/OS. This frees MFX to use the high-performance techniques – sophisticated access methods, path length minimization, I/O optimization – that have made MFX the most frequently used sort product.
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