Re: No merge sort?

From: Greg Stark <gsstark(at)mit(dot)edu>
To: "Dann Corbit" <DCorbit(at)connx(dot)com>
Cc: "Greg Stark" <gsstark(at)MIT(dot)EDU>, <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: No merge sort?
Date: 2003-04-07 20:50:03
Message-ID: 87n0j2vxqc.fsf@stark.dyndns.tv
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> floats are typically 64 - 96 bytes, bigints can be arbitrarily large.
>
> Floats are generally 8 bytes.

Er, I meant "bits" there. oops.

I'm still reading the other stuff.

Most of this usually comes down to differences between theory and practice.
The constants often matter a whole lot, and the cache behaviour and memory
usage can matter a whole lot. quicksort after all is actually O(n^2) worst
case...

--
greg

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