On Thu, 19 May 2005, Tom Lane wrote:
Oleg Bartunov <oleg@sai.msu.su> writes:
I tried to see io statistics, but it was weird in 8.0X and in 8.1dev I still
don't understand it :)
We aren't yet updating the io statistics for bitmap scans properly.
There was a thread about this but it petered out without any resolution
about what we should do ...
what's 'Bitmap Heap Scan' ?
Bitmap Heap Scan on titles (cost=5.32..1349.79 rows=378 width=41) (actual
time=76.601..111.207 rows=4153 loops=1)
Filter: (fts_index @@ '\'list\''::tsquery)
-> Bitmap Index Scan on fts_idx (cost=0.00..5.32 rows=378 width=0) (actual
time=74.943..74.943 rows=4154 loops=1)
Index Cond: (fts_index @@ '\'list\''::tsquery)
regards, tom lane
Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83
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