From: pgsql-hackers-ow...@postgresql.org > [mailto:pgsql-hackers-ow...@postgresql.org] On Behalf Of Kyotaro > HORIGUCHI > <Using radix tree> > $ time psql postgres -c 'select t.a from t, generate_series(0, 9999)' > > /dev/null > > real 0m22.696s > user 0m16.991s > sys 0m0.182s> > > Using binsearch the result for the same operation was > real 0m35.296s > user 0m17.166s > sys 0m0.216s > > Returning in UTF-8 bloats the result string by about 1.5 times so it doesn't > seem to make sense comparing with it. But it takes real = 47.35s.
Cool, 36% speedup! Does this difference vary depending on the actual characters used, e.g. the speedup would be greater if most of the characters are ASCII? Regards Takayuki Tsunakawa -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
