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Mark A Rada cbdefb5ac4 gitweb: add support for XZ compressed snapshots 
The XZ compression format uses the LZMA2 compression algorithm, which
often yields higher compression ratios than both GZip and BZip2 at the
cost of using more CPU time and RAM. XZ is the slowest for compression,
but still much faster than BZip2 for decompression, almost comparable
to GZip (see benchmarks below).

Some simple benchmarks show the pros and cons of using XZ compression;
starting with an already tarball'd archive of the repos listed below.
Memory usage seemed to be consistent for any given algorithm at their
respective default compression levels.

CPU: AMD Sempron 3400+ (1 core @ 1.8GHz with 256K L2 cache)
Virtual Memory Usage
       GZip: 4152K        BZip2: 13352K        XZ: 102M

Linux 2.6 series (f5886c7f96f2542382d3a983c5f13e03d7fc5259)  349M
gzip    23.70s user   0.47s system  99% cpu   24.227 total    76M
gunzip  3.74s user    0.74s system  94% cpu   4.741 total
bzip2   130.96s user  0.53s system  99% cpu   2:11.97 total   59M
bunzip2 31.05s user   1.02s system  99% cpu   32.355 total
xz      448.78s user  0.91s system  99% cpu   7:31.28 total   51M
unxz    7.67s user    0.80s system  98% cpu   8.607 total

Git (0a53e9ddea)                11M
gzip    0.77s user    0.03s system  99% cpu   0.792 total    2.5M
gunzip  0.12s user    0.02s system  98% cpu   0.142 total
bzip2   3.42s user    0.02s system  99% cpu   3.454 total    2.1M
bunzip2 0.95s user    0.03s system  99% cpu   0.984 total
xz      12.88s user   0.14s system  98% cpu   13.239 total   1.9M
unxz    0.27s user    0.03s system  99% cpu   0.298 total

XZ (669413bb2db954bbfde3c4542fddbbab53891eb4)                1.8M
gzip    0.12s user    0.00s system  95% cpu   0.132 total    442K
gunzip  0.02s user    0.00s system  97% cpu   0.027 total
bzip2   1.28s user    0.01s system  99% cpu   1.298 total    363K
bunzip2 0.15s user    0.01s system  100% cpu  0.157 total
xz      1.62s user    0.03s system  99% cpu   1.652 total    347K
unxz    0.05s user    0.00s system  99% cpu   0.058 total

From a time and memory perspective, nothing compares to GZip, but if
given an average upload speed of 20KB/s, it would take ~400 seconds
longer to transfer the BZip2'd kernel snapshot than the XZ snapshot;
the transfer time difference is even greater between GZip and XZ. The
real time savings are relatively the same for all test cases, but less
dramatic for smaller repositories.

XZ decompresses ~1.8-2 times slower than GZip, and ~2.7-3.75 times
faster than BZip2; XZ gets relatively faster as snapshots get larger.
However, XZ takes relatively longer to compress as snapshots get larger.

The downside for XZ'd snapshots is the large CPU and memory load put on
the server to generate the compressed snapshot, though XZ will
eventually
have threading support, and the real clock time for making XZ'd
snapshots
would decrease if the server had a beefy multi-core CPU.

XZ compression is disabled by default to allow upgrades to take place
without any surprises, as the CPU and memory requirements will be an
issue for high load or lightweight servers. Also, the XZ format is still
new (format declared stable ~6 months ago), and there have been no
"stable" releases of the utils yet.

Signed-off-by: Mark Rada <marada@uwaterloo.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-08-06 14:05:27 -07:00
arm
compat MinGW: truncate exit()'s argument to lowest 8 bits 2009-07-05 12:16:26 -07:00
contrib Merge branch 'maint-1.6.3' into maint 2009-08-05 12:37:24 -07:00
Documentation Merge branch 'sb/read-tree' 2009-08-05 12:40:07 -07:00
git-gui Merge git://repo.or.cz/git-gui 2009-05-01 22:11:57 -07:00
gitk-git Merge git://git.kernel.org/pub/scm/gitk/gitk 2009-06-20 11:54:37 -07:00
gitweb gitweb: add support for XZ compressed snapshots 2009-08-06 14:05:27 -07:00
mozilla-sha1
perl Git.pm: Always set Repository to absolute path if autodetecting 2009-05-09 08:25:55 -07:00
ppc
t Merge branch 'jc/apply-epoch-patch' 2009-08-05 12:40:00 -07:00
templates Merge branch 'hv/sample-update' 2009-05-23 01:39:15 -07:00
xdiff refactor: use bitsizeof() instead of 8 * sizeof() 2009-07-22 21:57:41 -07:00
.gitattributes .gitattributes: CR at the end of the line is an error 2009-06-21 10:42:37 -07:00
.gitignore Merge branch 'da/difftool' 2009-04-17 21:42:12 -07:00
.mailmap
abspath.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
alias.c Merge branch 'jk/maint-1.6.0-trace-argv' into maint 2009-05-25 19:03:20 -07:00
alloc.c Fix a bunch of pointer declarations (codestyle) 2009-05-01 15:17:31 -07:00
archive-tar.c archive-tar.c: squelch a type mismatch warning 2009-05-08 23:57:29 -07:00
archive-zip.c
archive.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
archive.h archive: do not read .gitattributes in working directory 2009-04-17 21:05:49 -07:00
attr.c attr: plug minor memory leak 2009-06-30 16:12:24 -07:00
attr.h attr: add GIT_ATTR_INDEX "direction" 2009-04-17 21:05:49 -07:00
base85.c Fix big left-shifts of unsigned char 2009-06-18 09:22:46 -07:00
bisect.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
bisect.h bisect: add parameters to "filter_skipped" 2009-06-06 11:26:56 -07:00
blob.c
blob.h
branch.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
branch.h Make git-clone respect branch.autosetuprebase 2009-03-03 22:58:52 -08:00
builtin-add.c Add 'fill_directory()' helper function for directory traversal 2009-07-09 01:11:26 -07:00
builtin-annotate.c
builtin-apply.c apply: notice creation/removal patches produced by GNU diff 2009-07-11 06:41:15 -07:00
builtin-archive.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
builtin-bisect--helper.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-blame.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
builtin-branch.c Merge branch 'maint' 2009-07-24 09:27:09 -07:00
builtin-bundle.c
builtin-cat-file.c Merge branch 'sb/opt-filename' 2009-05-31 16:57:42 -07:00
builtin-check-attr.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-check-ref-format.c strbuf_check_branch_ref(): a helper to check a refname for a branch 2009-03-22 23:52:11 -07:00
builtin-checkout-index.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-checkout.c Merge branch 'lt/maint-diff-reduce-lstat' into maint 2009-05-25 19:04:08 -07:00
builtin-clean.c Add 'fill_directory()' helper function for directory traversal 2009-07-09 01:11:26 -07:00
builtin-clone.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
builtin-commit-tree.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
builtin-commit.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
builtin-config.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
builtin-count-objects.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-describe.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-diff-files.c
builtin-diff-index.c
builtin-diff-tree.c Remove unused assignments 2009-03-14 13:36:34 -07:00
builtin-diff.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
builtin-fast-export.c git fast-export: add --no-data option 2009-07-31 07:48:09 -07:00
builtin-fetch--tool.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
builtin-fetch-pack.c fetch-pack: close output channel after sideband demultiplexer terminates 2009-06-08 21:18:41 -07:00
builtin-fetch.c quickfetch(): Prevent overflow of the rev-list command line 2009-07-10 23:53:17 -07:00
builtin-fmt-merge-msg.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
builtin-for-each-ref.c Merge branch 'ak/maint-for-each-ref-no-lookup' 2009-06-18 10:33:09 -07:00
builtin-fsck.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
builtin-gc.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-grep.c Merge branch 'rs/grep-p' 2009-07-09 00:59:58 -07:00
builtin-help.c Fix various sparse warnings in the git source code 2009-06-20 21:52:55 -07:00
builtin-http-fetch.c
builtin-init-db.c Merge branch 'ns/init-mkdir' 2009-08-05 12:39:33 -07:00
builtin-log.c show: add space between multiple items 2009-07-19 11:04:18 -07:00
builtin-ls-files.c Add 'fill_directory()' helper function for directory traversal 2009-07-09 01:11:26 -07:00
builtin-ls-remote.c
builtin-ls-tree.c Produce a nicer output in case of sha1_object_info failures in ls-tree -l 2009-03-20 09:35:21 -07:00
builtin-mailinfo.c Revert "mailinfo: Remove only one set of square brackets" 2009-07-15 15:10:06 -07:00
builtin-mailsplit.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
builtin-merge-base.c git-merge-base/git-show-branch: Cleanup documentation and usage 2009-08-05 10:28:05 -07:00
builtin-merge-file.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-merge-ours.c
builtin-merge-recursive.c MinGW: Fix compiler warning in merge-recursive 2009-05-23 01:54:45 -07:00
builtin-merge.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
builtin-mktree.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-mv.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
builtin-name-rev.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-pack-objects.c Merge branch 'js/maint-graft-unhide-true-parents' 2009-07-25 00:45:03 -07:00
builtin-pack-refs.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-prune-packed.c prune-packed: migrate to parse-options 2009-07-10 23:57:21 -07:00
builtin-prune.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-push.c push: do not give big warning when no preference is configured 2009-07-18 17:20:52 -07:00
builtin-read-tree.c read-tree: migrate to parse-options 2009-06-27 14:11:28 -07:00
builtin-receive-pack.c receive-pack: do not send error details to the client 2009-06-21 20:19:21 -07:00
builtin-reflog.c Better usage string for reflog. 2009-08-05 09:45:00 -07:00
builtin-remote.c Merge branch 'cf/maint-remote-uploadpack-useconfig-fix' 2009-07-01 19:40:54 -07:00
builtin-rerere.c replace direct calls to unlink(2) with unlink_or_warn 2009-04-29 18:37:41 -07:00
builtin-reset.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-rev-list.c bisect: add parameters to "filter_skipped" 2009-06-06 11:26:56 -07:00
builtin-rev-parse.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
builtin-revert.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
builtin-rm.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
builtin-send-pack.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
builtin-shortlog.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-show-branch.c git-merge-base/git-show-branch --merge-base: Documentation and test 2009-08-05 10:29:37 -07:00
builtin-show-ref.c show-ref: migrate to parse-options 2009-06-20 23:50:42 -07:00
builtin-stripspace.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
builtin-symbolic-ref.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-tag.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
builtin-tar-tree.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
builtin-unpack-objects.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
builtin-update-index.c Fix a bunch of pointer declarations (codestyle) 2009-05-01 15:17:31 -07:00
builtin-update-ref.c parse-opts: prepare for OPT_FILENAME 2009-05-25 01:07:25 -07:00
builtin-upload-archive.c Merge branch 'pb/maint-1.6.2-userdiff-fix' into maint 2009-06-21 21:08:05 -07:00
builtin-verify-pack.c verify-pack: migrate to parse-options 2009-07-10 23:57:20 -07:00
builtin-verify-tag.c verify-tag: migrate to parse-options 2009-07-10 23:57:15 -07:00
builtin-write-tree.c write-tree: migrate to parse-options 2009-07-10 23:56:40 -07:00
builtin.h build-in git-mktree 2009-05-10 12:41:35 -07:00
bundle.c Terminate argv with NULL before calling setup_revisions() 2009-05-21 08:56:24 -07:00
bundle.h
cache-tree.c Improve on the 'invalid object' error message at commit time 2009-07-14 13:50:33 -07:00
cache-tree.h Optimize "diff-index --cached" using cache-tree 2009-05-25 11:35:29 -07:00
cache.h Merge branch 'js/maint-graft-unhide-true-parents' 2009-07-25 00:45:03 -07:00
check-builtins.sh
check-racy.c
check_bindir
color.c Clean up use of ANSI color sequences 2009-02-13 17:27:58 -08:00
color.h graph API: Added logic for colored edges 2009-04-13 22:41:25 -07:00
combine-diff.c Merge branch 'maint' 2009-07-22 21:56:46 -07:00
command-list.txt difftool: move 'git-difftool' out of contrib 2009-04-07 22:19:56 -07:00
commit.c Merge branch 'js/maint-graft-unhide-true-parents' 2009-07-25 00:45:03 -07:00
commit.h bisect: drop unparse_commit() and use clear_commit_marks() 2009-05-27 13:45:45 -07:00
config.c Merge branch 'maint-1.6.3' into maint 2009-08-05 12:37:24 -07:00
config.mak.in configure.ac: rework/fix the NEEDS_RESOLV and NEEDS_LIBGEN tests 2009-07-22 21:56:51 -07:00
configure.ac configure.ac: properly unset NEEDS_SSL_WITH_CRYPTO when sha1 func is missing 2009-07-22 21:57:41 -07:00
connect.c Fix various sparse warnings in the git source code 2009-06-20 21:52:55 -07:00
convert.c
copy.c
COPYING
csum-file.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
csum-file.h
ctype.c ctype.c: fix typo in comment 2009-05-01 16:07:29 -07:00
daemon.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
date.c Work around BSD whose typeof(tv.tv_sec) != time_t 2009-05-05 22:19:14 -07:00
decorate.c Unify signedness in hashing calls 2009-05-20 00:02:24 -07:00
decorate.h
delta.h Fix big left-shifts of unsigned char 2009-06-18 09:22:46 -07:00
diff-delta.c
diff-lib.c Merge branch 'jc/cache-tree' 2009-06-20 21:47:30 -07:00
diff-no-index.c Fix a bunch of pointer declarations (codestyle) 2009-05-01 15:17:31 -07:00
diff.c Merge branch 'rs/grep-p' 2009-07-09 00:59:58 -07:00
diff.h Use DIFF_XDL_SET/DIFF_OPT_SET instead of raw bit-masking 2009-03-04 00:56:51 -08:00
diffcore-break.c Remove unused function scope local variables 2009-03-07 20:52:17 -08:00
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c pickaxe: count regex matches only once 2009-03-21 23:18:53 -07:00
diffcore-rename.c Fix typos / spelling in comments 2009-04-22 19:02:12 -07:00
diffcore.h
dir.c Avoid using 'lstat()' to figure out directories 2009-07-09 20:05:19 -07:00
dir.h Simplify read_directory[_recursive]() arguments 2009-07-09 01:11:28 -07:00
editor.c
entry.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
environment.c Merge branch 'js/maint-graft-unhide-true-parents' 2009-07-25 00:45:03 -07:00
exec_cmd.c Merge branch 'js/maint-1.6.0-exec-path-env' into maint-1.6.1 2009-04-08 23:01:10 -07:00
exec_cmd.h Refactor git_set_argv0_path() to git_extract_argv0_path() 2009-01-26 00:26:05 -08:00
fast-import.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
fetch-pack.h
fixup-builtins
fsck.c Allow the Unix epoch to be a valid commit date 2009-07-06 09:36:16 -07:00
fsck.h Fix typos / spelling in comments 2009-04-22 19:02:12 -07:00
generate-cmdlist.sh
git-add--interactive.perl add -i: do not dump patch during application 2009-06-03 00:11:15 -07:00
git-am.sh Merge branch 'gb/am-foreign' 2009-07-06 09:38:33 -07:00
git-archimport.perl
git-bisect.sh bisect: make "git bisect" use new "--next-all" bisect-helper function 2009-05-10 14:30:33 -07:00
git-compat-util.h janitor: add DIV_ROUND_UP and use it. 2009-07-22 21:57:41 -07:00
git-cvsexportcommit.perl Avoid generating a warning if $fullname{$file} is undefined 2009-07-06 09:36:43 -07:00
git-cvsimport.perl
git-cvsserver.perl git-cvsserver: run post-update hook *after* update. 2009-01-30 21:11:46 -08:00
git-difftool--helper.sh mergetool--lib: simplify API usage by removing more global variables 2009-04-12 15:19:12 -07:00
git-difftool.perl Explain seemingly pointless use of system in difftool 2009-04-24 01:20:35 -07:00
git-filter-branch.sh Convert to use quiet option when available 2009-04-22 19:05:37 -07:00
git-instaweb.sh Trivial path quoting fixes in git-instaweb 2009-07-26 11:27:27 -07:00
git-lost-found.sh
git-merge-octopus.sh
git-merge-one-file.sh Clarify kind of conflict in merge-one-file helper 2009-05-09 00:27:39 -07:00
git-merge-resolve.sh Convert to use quiet option when available 2009-04-22 19:05:37 -07:00
git-mergetool--lib.sh mergetool--lib: add support for araxis merge 2009-05-24 11:21:05 -07:00
git-mergetool.sh mergetool--lib: simplify API usage by removing more global variables 2009-04-12 15:19:12 -07:00
git-parse-remote.sh parse-remote: remove unused functions 2009-06-11 19:50:45 -07:00
git-pull.sh pull: support rebased upstream + fetch + pull --rebase 2009-07-19 10:29:38 -07:00
git-quiltimport.sh git-quiltimport: preserve standard input to be able to read user input 2009-02-25 00:49:13 -08:00
git-rebase--interactive.sh Fix rebase -p --onto 2009-07-22 11:15:06 -07:00
git-rebase.sh Merge branch 'sb/quiet-porcelains' 2009-07-01 19:40:50 -07:00
git-relink.perl
git-repack.sh Merge branch 'js/maint-graft-unhide-true-parents' 2009-07-25 00:45:03 -07:00
git-request-pull.sh request-pull: optionally show a patch as well 2009-07-29 11:02:49 -07:00
git-send-email.perl Merge branch 'maint-1.6.3' into maint 2009-08-05 12:37:24 -07:00
git-sh-setup.sh git-sh-setup: introduce say() for quiet options 2009-06-18 09:50:31 -07:00
git-stash.sh git stash: modernize use of "dashed" git-XXX calls 2009-07-22 21:57:41 -07:00
git-submodule.sh Merge branch 'sb/quiet-porcelains' 2009-07-01 19:40:50 -07:00
git-svn.perl git svn: make minimize URL more reliable over http(s) 2009-07-25 13:37:02 -07:00
GIT-VERSION-GEN Start 1.6.5 cycle 2009-07-29 09:33:29 -07:00
git-web--browse.sh git: browsing paths with spaces when using the start command 2009-06-01 00:22:01 -07:00
git.c Merge branch 'js/run-command-updates' (early part) 2009-07-09 00:59:32 -07:00
git.spec.in Merge branch 'maint-1.6.0' into maint 2009-02-05 19:38:58 -08:00
graph.c janitor: use NULL and not 0 for pointers. 2009-07-22 21:57:41 -07:00
graph.h
grep.c grep: simplify -p output 2009-07-02 21:36:42 -07:00
grep.h grep -p: support user defined regular expressions 2009-07-01 19:16:50 -07:00
hash-object.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
hash.c
hash.h
help.c janitor: add DIV_ROUND_UP and use it. 2009-07-22 21:57:41 -07:00
help.h
http-push.c http-push: fix xml_entities() string parsing overrun 2009-07-06 09:36:08 -07:00
http-walker.c Merge branch 'rc/maint-http-local-slot-fix' into maint 2009-06-21 21:15:31 -07:00
http.c Merge branch 'ml/http' 2009-07-09 01:00:36 -07:00
http.h http*: add helper methods for fetching objects (loose) 2009-06-06 11:03:11 -07:00
ident.c
imap-send.c Fix various sparse warnings in the git source code 2009-06-20 21:52:55 -07:00
index-pack.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
INSTALL
levenshtein.c Fix typos / spelling in comments 2009-04-22 19:02:12 -07:00
levenshtein.h
list-objects.c Merge branch 'lt/pack-object-memuse' 2009-04-18 14:46:17 -07:00
list-objects.h Merge branch 'lt/pack-object-memuse' 2009-04-18 14:46:17 -07:00
ll-merge.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
ll-merge.h
lockfile.c Merge branch 'ar/unlink-err' into maint 2009-05-25 19:01:50 -07:00
log-tree.c log-tree: fix confusing comment 2009-07-01 11:16:54 -07:00
log-tree.h format-patch: --attach/inline uses filename instead of SHA1 2009-03-22 21:45:19 -07:00
mailmap.c Fix various sparse warnings in the git source code 2009-06-20 21:52:55 -07:00
mailmap.h Add map_user() and clear_mailmap() to mailmap 2009-02-08 12:36:38 -08:00
Makefile Merge branch 'maint' 2009-07-24 09:27:09 -07:00
match-trees.c
merge-file.c
merge-index.c Simplify some instances of run_command() by using run_command_v_opt(). 2009-06-09 00:15:57 -07:00
merge-recursive.c Merge branch 'tr/die_errno' 2009-07-06 09:39:46 -07:00
merge-recursive.h
merge-tree.c Replace deprecated dashed git commands in usage 2009-02-04 15:08:49 -08:00
mktag.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
name-hash.c
object.c Unify signedness in hashing calls 2009-05-20 00:02:24 -07:00
object.h Merge branch 'js/maint-all-implies-HEAD' into maint 2009-02-05 17:54:12 -08:00
pack-check.c Don't expect verify_pack() callers to set pack_size 2009-06-06 10:56:27 -07:00
pack-redundant.c Add calls to git_extract_argv0_path() in programs that call git_config_* 2009-01-26 00:26:05 -08:00
pack-refs.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
pack-refs.h
pack-revindex.c janitor: useless checks before free 2009-07-22 21:57:41 -07:00
pack-revindex.h
pack-write.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
pack.h
pager.c pager: do wait_for_pager on signal death 2009-01-21 22:46:53 -08:00
parse-options.c parse-opt: optionally show "--no-" option string 2009-07-31 07:47:38 -07:00
parse-options.h parse-opt: optionally show "--no-" option string 2009-07-31 07:47:38 -07:00
patch-delta.c Fix big left-shifts of unsigned char 2009-06-18 09:22:46 -07:00
patch-id.c Replace deprecated dashed git commands in usage 2009-02-04 15:08:49 -08:00
patch-ids.c patch-ids: use the new generic "sha1_pos" function to lookup sha1 2009-04-04 22:57:42 -07:00
patch-ids.h
path.c diff: generate pretty filenames in prep_temp_blob() 2009-05-31 17:57:59 -07:00
pkt-line.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
pkt-line.h
preload-index.c janitor: add DIV_ROUND_UP and use it. 2009-07-22 21:57:41 -07:00
pretty.c Use 'UTF-8' rather than 'utf-8' everywhere for backward compatibility 2009-05-18 20:53:12 -07:00
progress.c progress bar: round to the nearest instead of truncating down 2009-04-25 08:54:18 -07:00
progress.h
quote.c Fix various sparse warnings in the git source code 2009-06-20 21:52:55 -07:00
quote.h quote: add "sq_dequote_to_argv" to put unwrapped args in an argv array 2009-03-30 01:22:53 -07:00
reachable.c process_{tree,blob}: Remove useless xstrdup calls 2009-04-08 22:58:43 -07:00
reachable.h
read-cache.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
README README: fix path to "gitcvs-migration.txt" and be more consistent 2009-02-25 00:49:54 -08:00
reflog-walk.c Fix a bunch of pointer declarations (codestyle) 2009-05-01 15:17:31 -07:00
reflog-walk.h make oneline reflog dates more consistent with multiline format 2009-03-20 00:57:27 -07:00
refs.c Merge branch 'maint' 2009-07-24 09:27:09 -07:00
refs.h Change prettify_ref to prettify_refname 2009-05-13 20:55:48 -07:00
RelNotes Start 1.6.5 cycle 2009-07-29 09:33:29 -07:00
remote.c Merge branch 'cb/maint-fetch-refspec-wo-dst' 2009-07-06 09:39:38 -07:00
remote.h Merge branch 'mg/pushurl' 2009-06-20 21:47:27 -07:00
rerere.c replace direct calls to unlink(2) with unlink_or_warn 2009-04-29 18:37:41 -07:00
rerere.h rerere: remove duplicated functions 2009-02-14 21:27:35 -08:00
revision.c Make 'git show' more useful 2009-07-14 13:50:29 -07:00
revision.h git log: add '--merges' flag to match '--no-merges' 2009-06-29 12:32:51 -07:00
run-command.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
run-command.h fix portability problem with IS_RUN_COMMAND_ERR 2009-04-01 11:05:54 -07:00
send-pack.h allow OFS_DELTA objects during a push 2009-05-01 22:06:41 -07:00
server-info.c Merge branch 'ar/unlink-err' into maint 2009-05-25 19:01:50 -07:00
setup.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
sha1-lookup.c sha1-lookup: fix up the assertion message 2009-04-06 00:56:27 -07:00
sha1-lookup.h sha1-lookup: add new "sha1_pos" function to efficiently lookup sha1 2009-04-04 22:57:39 -07:00
sha1_file.c refactor: use bitsizeof() instead of 8 * sizeof() 2009-07-22 21:57:41 -07:00
sha1_name.c sha1_name.c: avoid unnecessary strbuf_release 2009-07-16 15:09:21 -07:00
shallow.c
shell.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
shortlog.h
show-index.c
sideband.c recv_sideband: Bands #2 and #3 always go to stderr 2009-03-10 23:23:02 -07:00
sideband.h recv_sideband: Bands #2 and #3 always go to stderr 2009-03-10 23:23:02 -07:00
sigchain.c refactor signal handling for cleanup functions 2009-01-21 22:46:53 -08:00
sigchain.h refactor signal handling for cleanup functions 2009-01-21 22:46:53 -08:00
strbuf.c fread does not return negative on error 2009-06-23 16:57:15 -07:00
strbuf.h Fix typos / spelling in comments 2009-04-22 19:02:12 -07:00
string-list.c string-list: new for_each_string_list() function 2009-02-27 15:19:08 -08:00
string-list.h string-list: new for_each_string_list() function 2009-02-27 15:19:08 -08:00
symlinks.c Export thread-safe version of 'has_symlink_leading_path()' 2009-07-09 20:05:19 -07:00
tag.c
tag.h
tar.h
test-chmtime.c test-chmtime: work around Windows limitation 2009-06-01 00:10:08 -07:00
test-ctype.c
test-date.c
test-delta.c
test-dump-cache-tree.c add test-dump-cache-tree in Makefile 2009-02-03 22:11:44 -08:00
test-genrandom.c test-genrandom: Add newline to usage string 2009-04-23 01:29:00 -07:00
test-match-trees.c
test-parse-options.c Fix various sparse warnings in the git source code 2009-06-20 21:52:55 -07:00
test-path-utils.c Introduce the function strip_path_suffix() 2009-02-19 22:45:48 -08:00
test-sha1.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
test-sha1.sh
test-sigchain.c t0005: use SIGTERM for sigchain test 2009-01-30 01:14:26 -08:00
thread-utils.c
thread-utils.h
trace.c trace: Fixed a minor typo in an error message. 2009-02-25 00:49:53 -08:00
transport.c Merge branch 'ld/push-porcelain-output-format' 2009-07-09 01:07:54 -07:00
transport.h add --porcelain option to git-push 2009-06-27 22:26:58 -07:00
tree-diff.c Merge branch 'ne/maint-1.6.0-diff-tree-t-r-show-directory' 2009-07-01 19:40:47 -07:00
tree-walk.c
tree-walk.h
tree.c Fix off-by-one in read_tree_recursive 2009-04-20 13:44:14 -07:00
tree.h
unimplemented.sh Makefile: allow building without perl 2009-04-08 22:14:56 -07:00
unpack-file.c Use die_errno() instead of die() when checking syscalls 2009-06-27 11:14:53 -07:00
unpack-trees.c Merge branch 'maint' 2009-07-18 16:57:47 -07:00
unpack-trees.h read-tree: migrate to parse-options 2009-06-27 14:11:28 -07:00
update-server-info.c Add calls to git_extract_argv0_path() in programs that call git_config_* 2009-01-26 00:26:05 -08:00
upload-pack.c Merge branch 'ne/futz-upload-pack' 2009-08-05 12:38:29 -07:00
usage.c die_errno(): double % in strerror() output just in case 2009-06-27 11:14:53 -07:00
userdiff.c avoid exponential regex match for java and objc function names 2009-06-18 09:52:10 -07:00
userdiff.h
utf8.c On Solaris choose the OLD_ICONV iconv() declaration based on the UNIX spec 2009-06-06 13:21:05 -07:00
utf8.h utf8: add utf8_strwidth() 2009-02-04 16:30:43 -08:00
var.c Add calls to git_extract_argv0_path() in programs that call git_config_* 2009-01-26 00:26:05 -08:00
walker.c janitor: useless checks before free 2009-07-22 21:57:41 -07:00
walker.h
wrapper.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
write_or_die.c Convert existing die(..., strerror(errno)) to die_errno() 2009-06-27 11:14:53 -07:00
ws.c Fix severe breakage in "git-apply --whitespace=fix" 2009-07-25 01:29:20 -07:00
wt-status.c Add 'fill_directory()' helper function for directory traversal 2009-07-09 01:11:26 -07:00
wt-status.h
xdiff-interface.c userdiff: add xdiff_clear_find_func() 2009-07-01 19:16:37 -07:00
xdiff-interface.h userdiff: add xdiff_clear_find_func() 2009-07-01 19:16:37 -07:00

README 

////////////////////////////////////////////////////////////////

	GIT - the stupid content tracker

////////////////////////////////////////////////////////////////

"git" can mean anything, depending on your mood.

 - random three-letter combination that is pronounceable, and not
   actually used by any common UNIX command.  The fact that it is a
   mispronunciation of "get" may or may not be relevant.
 - stupid. contemptible and despicable. simple. Take your pick from the
   dictionary of slang.
 - "global information tracker": you're in a good mood, and it actually
   works for you. Angels sing, and a light suddenly fills the room.
 - "goddamn idiotic truckload of sh*t": when it breaks

Git is a fast, scalable, distributed revision control system with an
unusually rich command set that provides both high-level operations
and full access to internals.

Git is an Open Source project covered by the GNU General Public License.
It was originally written by Linus Torvalds with help of a group of
hackers around the net. It is currently maintained by Junio C Hamano.

Please read the file INSTALL for installation instructions.

See Documentation/gittutorial.txt to get started, then see
Documentation/everyday.txt for a useful minimum set of commands, and
Documentation/git-commandname.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with "man gittutorial" or "git help tutorial", and the
documentation of each command with "man git-commandname" or "git help
commandname".

CVS users may also want to read Documentation/gitcvs-migration.txt
("man gitcvs-migration" or "git help cvs-migration" if git is
installed).

Many Git online resources are accessible from http://git.or.cz/
including full documentation and Git related tools.

The user discussion and development of Git take place on the Git
mailing list -- everyone is welcome to post bug reports, feature
requests, comments and patches to git@vger.kernel.org. To subscribe
to the list, send an email with just "subscribe git" in the body to
majordomo@vger.kernel.org. The mailing list archives are available at
http://marc.theaimsgroup.com/?l=git and other archival sites.

The messages titled "A note from the maintainer", "What's in
git.git (stable)" and "What's cooking in git.git (topics)" and
the discussion following them on the mailing list give a good
reference for project status, development direction and
remaining tasks.