[EMAIL PROTECTED] writes:
> I just noticed that inserting 10000 tuples in an indexed table took exactly
> the same amount of time as inserting 10000 tuples in a non-indexed table
> (194 seconds). Why is this? The difference in MySQL is about 50% longer in
> an indexed table.
Surprises me too. Which PG version, and what are the test conditions
exactly? (Table and index declarations; is table empty initially;
how is backend being driven, and what commands are issued exactly?
How many shared buffers, platform, etc)
Under PG 7.1, it's possible that your test caused no actual I/O except
to the WAL log ... but I'd still think that the volume of WAL I/O
would be greater when writing an index.
regards, tom lane
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