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Changes in 3.1

Below is a summary of changes from V3.0. Commercially licensed users may obtain the detailed change list / release notes from (

  • improved performance of select with intervals.
  • improved performance through using more chip-specific instructions (SSE).
  • parallel processing through multiprocess peach.
  • and numerous other minor fixes and improvements.

Production release date


Not upwardly compatible

  • distributed each (i.e. q -s -N) no longer opens connections to secondary processes automatically on ports 20000+til N.
  • result type of E arithmetic for +-* changes from F to E. (avg and wavg still always go to F. mdev promotes to F.)
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