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7349afd20e
'update-index --refresh' and 'diff-index' (without --cached) don't honor
the core.preloadindex setting yet. Porcelain commands using these (such as
git [svn] rebase) suffer from this, especially on Windows.
Use read_cache_preload to improve performance.
Additionally, in builtin/diff.c, don't preload index status if we don't
access the working copy (--cached).
Results with msysgit on WebKit repo (2GB in 200k files):
| update-index | diff-index | rebase
----------------+--------------+------------+---------
msysgit-v1.8.0 | 9.157s | 10.536s | 42.791s
+ preloadindex | 9.157s | 10.536s | 28.725s
+ this patch | 2.329s | 2.752s | 15.152s
+ fscache [1] | 0.731s | 1.171s | 8.877s
[1] https://github.com/kblees/git/tree/kb/fscache-v3
Thanks-to: Albert Krawczyk <pro-logic@optusnet.com.au>
Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Jeff King <peff@peff.net>
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
#include "cache.h"
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#include "diff.h"
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#include "commit.h"
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#include "revision.h"
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#include "builtin.h"
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#include "submodule.h"
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static const char diff_cache_usage[] =
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"git diff-index [-m] [--cached] "
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"[<common diff options>] <tree-ish> [<path>...]"
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COMMON_DIFF_OPTIONS_HELP;
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int cmd_diff_index(int argc, const char **argv, const char *prefix)
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{
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struct rev_info rev;
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int cached = 0;
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int i;
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int result;
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init_revisions(&rev, prefix);
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gitmodules_config();
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git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
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rev.abbrev = 0;
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argc = setup_revisions(argc, argv, &rev, NULL);
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (!strcmp(arg, "--cached"))
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cached = 1;
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else
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usage(diff_cache_usage);
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}
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if (!rev.diffopt.output_format)
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rev.diffopt.output_format = DIFF_FORMAT_RAW;
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/*
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* Make sure there is one revision (i.e. pending object),
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* and there is no revision filtering parameters.
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*/
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if (rev.pending.nr != 1 ||
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rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
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usage(diff_cache_usage);
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if (!cached) {
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setup_work_tree();
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if (read_cache_preload(rev.diffopt.pathspec.raw) < 0) {
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perror("read_cache_preload");
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return -1;
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}
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} else if (read_cache() < 0) {
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perror("read_cache");
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return -1;
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}
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result = run_diff_index(&rev, cached);
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return diff_result_code(&rev.diffopt, result);
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}
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