On 08/28/2016 04:41 PM, Tom Lane wrote:
Robert Haas <robertmh...@gmail.com> writes:
Also, I think we ought to replace this code in aset.c:
initBlockSize = MAXALIGN(initBlockSize);
if (initBlockSize < 1024)
initBlockSize = 1024;
maxBlockSize = MAXALIGN(maxBlockSize);
With this:
Assert(initBlockSize >= 1024 && initBlockSize == MAXALIGN(initBlockSize));
Assert(maxBlockSize == MAXALIGN(maxBlockSize));
Good idea --- if we'd had it that way, these errors would never have
gotten committed in the first place. I'm for doing that only in HEAD
though.
regards, tom lane
Then maybe also add
Assert(initBlockSize <= maxBlockSize);
And perhaps also an assert making sure the minContextSize value makes
sens with respect to the min/max block sizes?
I'm however pretty sure this will have absolutely no impact on profiles.
It might save a few cycles, but this only runs when creating the memory
context and all profiles I've seen are about palloc/pfree.
It might matter when creating many memory contexts, but then you
probably have other things to worry about.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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