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Build a typed sort function for the mergesort performance test tool
using DEFINE_LIST_SORT instead of calling llist_mergesort(). This gets
rid of the next pointer accessor functions and improves the performance
at the cost of a slightly higher object text size.
Before:
0071.12: llist_mergesort() unsorted 0.24(0.22+0.01)
0071.14: llist_mergesort() sorted 0.12(0.10+0.01)
0071.16: llist_mergesort() reversed 0.12(0.10+0.01)
__TEXT __DATA __OBJC others dec hex
6407 276 0 24701 31384 7a98 t/helper/test-mergesort.o
With this patch:
0071.12: DEFINE_LIST_SORT unsorted 0.22(0.21+0.01)
0071.14: DEFINE_LIST_SORT sorted 0.11(0.10+0.01)
0071.16: DEFINE_LIST_SORT reversed 0.11(0.10+0.01)
__TEXT __DATA __OBJC others dec hex
6615 276 0 25832 32723 7fd3 t/helper/test-mergesort.o
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Check if sorting takes advantage of already sorted or reversed content,
or if that corner case actually decreases performance, like it would for
a simplistic quicksort implementation.
Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a sort command to test-string-list that reads lines from stdin,
stores them in a string_list and then sorts it. Use it in a simple
perf test script to measure the performance of string_list_sort().
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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