X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Fsorter%2FTODO;h=79a60204b09ea716c0f99192322586bc62d10d03;hb=a5ff98a53789157a6c96e58b2385bb898d688a22;hp=679649929abe3ac86c64546c45ea1377ae9ef7a3;hpb=bed60cae19aeac3b0fc07275f8c8fa2a7ec93639;p=libucw.git diff --git a/lib/sorter/TODO b/lib/sorter/TODO index 67964992..79a60204 100644 --- a/lib/sorter/TODO +++ b/lib/sorter/TODO @@ -3,13 +3,17 @@ o Giant runs. o Records of odd lengths. o Empty files. -Improvements: -o Use radix-sort for internal sorting. -o Parallelization of internal sorting. +Cleanups: o Clean up data types and make sure they cannot overflow. (size_t vs. u64 vs. sh_off_t vs. uns) -o Switching between direct and normal I/O. Should use normal I/O if the input is small enough. -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 Clean up log levels. +o Clean up introductory comments. o Log messages should show both original and new size of the data. The speed should be probably calculated from the former. +o Buffer sizing in shep-export. +o Problems with thread stack limit in radix-sorting of arrays. + +Users of lib/sorter/array.h which might use radix-sorting: +indexer/chewer.c +indexer/lexfreq.c +indexer/mkgraph.c +indexer/reftexts.c