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  1. WiredTiger
  2. WT-8012

Remove unused cache_lookaside_score and cache_hs_score stats

    • Type: Icon: Technical Debt Technical Debt
    • Resolution: Fixed
    • Priority: Icon: Minor - P4 Minor - P4
    • WT11.0.0, 5.3.0
    • Affects Version/s: None
    • Component/s: None
    • Labels:

      The cache_lookaside_score and cache_hs_score statistics are no longer used by MongoDB.  They don't seem to serve any useful purpose in the WT code either. cache_lookaside_score in particular is simply set to zero and never changed (see WT-5576).  

      WT-5499 discussed finding a new statistics to replace cache_lookaside_score when we replaced the lookaside file with durable history. But that ticket was never closed and according to dianna.hohensee we have not used cache_lookaside_score since v4.4.

      Unless these statistics are somehow needed for backwards compatibility, we should remove them.


            bing.xu@mongodb.com Bing Xu (Inactive)
            keith.smith@mongodb.com Keith Smith
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