On Wed, Oct 09, 2002 at 12:12:12AM -0400, Tom Lane wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > OK, here is a version of newNode that is a macro.
>
> If you use memset() instead of MemSet(), I'm afraid you're going to blow
> off most of the performance gain this was supposed to achieve.
>
> > Does anyone have additional suggestions? The only thing I can suggest
> > is to make a clear-memory version of palloc because palloc always calls
> > MemoryContextAlloc() so I can put it in there. How does that sound?
>
> I do not think palloc should auto-zero memory. Hard to explain why,
> but it just feels like a bad decision. One point is that the MemSet
Agree. The memory-management routine knows nothing about real memory
usage - maybe is zeroize memory wanted in palloc caller, but maybe
not.. The palloc() caller knows it better than plalloc(). If I good
remember same discussion was long time ago in linux-kernel list and
result was non-zeroize-memory.
Karel
--
Karel Zak <zakkr@zf.jcu.cz>
http://home.zf.jcu.cz/~zakkr/
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