This patch series contains 2 patches that have already been sent to
the list but have felt through the cracks. It would be nice if they
could be considered for v2.13.0.
Patch 1/2 (split-index: add and use unshare_split_index()) by Duy
fixes a memory leak when a new shared index file is created and memory
used by the old one should be freed.
Patch 2/2 (p3400: add perf tests for rebasing many changes) adds a
test in t/perf that can help see what performance improvements can be
gained by using the split index feature. For example using this patch
at one point I got the following results on a Linux machine on the Git
repository:
Test v2.10.0
v2.11.0 v2.12.0 origin/master
------------------------------------------------------------------------------------------------------------------------------------------------------------
3400.2: rebase on top of a lot of unrelated changes 2.62(2.19+0.55)
2.54(2.15+0.49) -3.1% 2.59(2.19+0.49) -1.1% 2.66(2.27+0.52) +1.5%
3400.4: rebase a lot of unrelated changes without split-index
14.08(10.12+3.92) 7.20(5.85+1.36) -48.9% 8.06(6.54+1.60) -42.8%
7.53(6.40+1.12) -46.5%
3400.6: rebase a lot of unrelated changes with split-index
14.10(10.11+3.94) 6.94(5.71+1.27) -50.8% 7.99(6.49+1.57) -43.3%
6.10(5.12+1.07) -56.7%
On bigger repositories results are likely to be better.
Christian Couder (1):
p3400: add perf tests for rebasing many changes
Nguyễn Thái Ngọc Duy (1):
split-index: add and use unshare_split_index()
read-cache.c | 10 ++-------
split-index.c | 57 ++++++++++++++++++++++++++++++++++++++------------
split-index.h | 1 +
t/perf/p3400-rebase.sh | 22 ++++++++++++++++++-
4 files changed, 68 insertions(+), 22 deletions(-)
--
2.13.0.rc1.83.g83955d3ecd.dirty
