summaryrefslogtreecommitdiff
path: root/environment.c
diff options
context:
space:
mode:
authorDavid Kastrup <dak@gnu.org>2014-05-04 19:13:57 +0200
committerJunio C Hamano <gitster@pobox.com>2014-05-06 15:32:21 -0700
commit4874f544f1574a55d787339a6455f524768c1b5d (patch)
tree9301b5fcab51044eba6f9cf7bf02b92125cef445 /environment.c
parentb4f86a4ce85e4e370a67455de6586a02f158a789 (diff)
downloadgit-4874f544f1574a55d787339a6455f524768c1b5d.tar.gz
Bump core.deltaBaseCacheLimit to 96mdk/raise-core-deltabasecachelimit
The default of 16m causes serious thrashing for large delta chains combined with large files. Here are some benchmarks (pu variant of git blame): time git blame -C src/xdisp.c >/dev/null for a repository of Emacs repacked with git gc --aggressive (v1.9, resulting in a window size of 250) located on an SSD drive. The file in question has about 30000 lines, 1Mb of size, and a history with about 2500 commits. 16m (previous default): real 3m33.936s user 2m15.396s sys 1m17.352s 32m: real 3m1.319s user 2m8.660s sys 0m51.904s 64m: real 2m20.636s user 1m55.780s sys 0m23.964s 96m: real 2m5.668s user 1m50.784s sys 0m14.288s 128m: real 2m4.337s user 1m50.764s sys 0m12.832s 192m: real 2m3.567s user 1m49.508s sys 0m13.312s Signed-off-by: David Kastrup <dak@gnu.org> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'environment.c')
-rw-r--r--environment.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/environment.c b/environment.c
index 5c4815dbe1..37354c8d05 100644
--- a/environment.c
+++ b/environment.c
@@ -37,7 +37,7 @@ int core_compression_seen;
int fsync_object_files;
size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
-size_t delta_base_cache_limit = 16 * 1024 * 1024;
+size_t delta_base_cache_limit = 96 * 1024 * 1024;
unsigned long big_file_threshold = 512 * 1024 * 1024;
const char *pager_program;
int pager_use_color = 1;