From: Martin Mares <mj@ucw.cz>
Date: Fri, 31 Aug 2007 19:07:15 +0000 (+0200)
Subject: New TODO notes.
X-Git-Tag: holmes-import~506^2~13^2~60
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=c24fb4c2d698c32a1251d0e9d9a8e67f41645520;p=libucw.git

New TODO notes.
---

diff --git a/lib/sorter/TODO b/lib/sorter/TODO
index 30f02a8c..207eefa2 100644
--- a/lib/sorter/TODO
+++ b/lib/sorter/TODO
@@ -7,7 +7,10 @@ Improvements:
 o  Use radix-sort for internal sorting.
 o  Parallelization of internal sorting.
 o  Clean up data types and make sure they cannot overflow. (size_t vs. u64 vs. sh_off_t vs. uns)
-o  Buffer sizing in internal sorters.
 o  Switching between direct and normal I/O.
 o  When merging, choose the output file with less runs instead of always switching?
 o  Deal with too rough range estimates in radix splitting.
+o  How does the speed of radix splitting decrease with increasing number of hash bits?
+   Does it help to use more bits than we need, so that we sort less data in memory?
+o  Log messages should show both original and new size of the data. The speed
+   should be probably calculated from the former.