On 10-Dec-07, at 11:31 AM, Shai Erera wrote:
As you can see, the actual allocation time is really negligible and
there
isn't much difference in the avg. running times of the queries.
However, the
*current* runs performed a lot worse at the beginning, before the
OS cache
warmed up.
This surprises me. I would have thought that the query execution at
this point would be IO-bound, hence _less_ suceptible to a little
extra gc.
The only significant difference is the number of allocations - the
modified
TDC and PQ allocate ~90% (!) less objects. This is significant,
especially
in heavy loaded systems.
I agree; this is desirable.
nice work,
-Mike
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