I've now done a non-limited comparative benchmark of master against the patch (once again, with usage_count starting at 6, and BM_MAX_USAGE_COUNT at 30) with a Gaussian distribution. Once again, the distribution threshold used was consistently 5.0, causing the patched pgbench to report for each test:
transaction type: Custom query scaling factor: 5000 standard deviation threshold: 5.00000 access probability of top 20%, 10% and 5% records: 0.68269 0.38293 0.19741 Results are available from: http://postgres-benchmarks.s3-website-us-east-1.amazonaws.com/3-sec-delay-gauss/ -- Peter Geoghegan -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
