I have two systems running 8.2beta1 getting strange difference of results in count(*). Query that illistrates the difference is count(*). this is a synthetic test i use to measure a sytems's cpu performance. System A: 2.2 ghz p4 northwood, HT win xp vanilla sata (1 disk) System B: amd 64 3700+ linux cent/os 4.4 32 bit 4 raptors, raid 5, 3ware explain analyze select 5000!; A: 2.4 seconds B: 1.8 seconds explain analyze select count(*) from generate_series(1,500000); A: 0.85 seconds B: 4.94 seconds Both systems have a freshly minted database. By all resepcts I would expect B to outperform A on most cpu bound tests with a faster processor and linux kernel. memory is not an issue here, varying the size of the count(*) does not effect the results, A is always 5x faster than B. the only two variables i see are cpu and o/s. Also tested on pg 8.1, results are same except pg 8.2 is about 10% faster on both systems for count(*). (yay!) :-) anybody think of anything obvious? should i profile? (windows mingw profiling sucks) merlin
