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Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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parse_attr() only needs access to the attr_state to which it should
store its results, not to the whole match_attr structure. This change
also removes the need for it to know num_attr. Change its signature
accordingly and add a comment.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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num_attr is incremented iff parse_attr() returns non-NULL. So do the
counting in parse_attr_line() instead of within parse_attr(). This
allows an integer rather than a pointer to an integer to be passed to
parse_attr().
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Consolidate here a few general comments plus links to other
documentation. Delete a comment with an out-of-date description of
the .gitattributes file format.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* cb/partial-commit-relative-pathspec:
commit: allow partial commits with relative paths
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In order to do partial commits, git-commit overlays a tree on the
cache and checks pathspecs against the result. Currently, the
overlaying is done using "prefix" which prevents relative pathspecs
with ".." and absolute pathspec from matching when they refer to
files not under "prefix" and absent from the index, but still in
the tree (i.e. files staged for removal).
The point of providing a prefix at all is performance optimization.
If we say there is no common prefix for the files of interest, then
we have to read the entire tree into the index.
But even if we cannot use the working directory as a prefix, we can
still figure out if there is a common prefix for all given paths,
and use that instead. The pathspec_prefix() routine from ls-files.c
does exactly that.
Any use of global variables is removed from pathspec_prefix() so
that it can be called from commit.c.
Reported-by: Reuben Thomas <rrt@sc3d.org>
Analyzed-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jk/fast-export-quote-path:
fast-export: quote paths in output
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Many pathnames in a fast-import stream need to be quoted. In
particular:
1. Pathnames at the end of an "M" or "D" line need quoting
if they contain a LF or start with double-quote.
2. Pathnames on a "C" or "R" line need quoting as above,
but also if they contain spaces.
For (1), we weren't quoting at all. For (2), we put
double-quotes around the paths to handle spaces, but ignored
the possibility that they would need further quoting.
This patch checks whether each pathname needs c-style
quoting, and uses it. This is slightly overkill for (1),
which doesn't actually need to quote many characters that
vanilla c-style quoting does. However, it shouldn't hurt, as
any implementation needs to be ready to handle quoted
strings anyway.
In addition to adding a test, we have to tweak a test which
blindly assumed that case (2) would always use
double-quotes, whether it needed to or not.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* rc/maint-http-wrong-free:
Makefile: some changes for http-related flag documentation
http.c: fix an invalid free()
Conflicts:
Makefile
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Rename git-http-pull to git-http-fetch. This was passed over in 215a7ad
(Big tool rename, Wed Sep 7 17:26:23 2005 -0700).
Also, distinguish between dumb and smart in flag docs, as the "warnings"
in NO_CURL and NO_EXPACT are no longer accurate given the introduction
of smart http(s).
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Remove a free() on the static buffer returned by sha1_file_name().
While we're at it, replace xmalloc() calls on the structs
http_(object|pack)_request with xcalloc() so that pointers in the
structs get initialized to NULL. That way, free()'s are safe - for
example, a free() on the url string member when aborting.
This fixes an invalid free().
Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Helped-by: Jeff King peff@peff.net
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* rs/grep-function-context:
grep: long context options
grep: add option to show whole function as context
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Take long option names for -A (--after-context), -B (--before-context)
and -C (--context) from GNU grep and add a similar long option name
for -W (--function-context).
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add a new option, -W, to show the whole surrounding function of a match.
It uses the same regular expressions as -p and diff to find the beginning
of sections.
Currently it will not display comments in front of a function, but those
that are following one. Despite this shortcoming it is already useful,
e.g. to simply see a more complete applicable context or to extract whole
functions.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ef/ipv4-connect-error-report:
connect: only log if all attempts failed (ipv4)
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In 63a995b (Do not log unless all connect() attempts fail), a
mechanism to only log connection errors if all attempts failed
was introduced for the IPv6 code-path, but not for the IPv4 one.
Introduce a matching mechanism so IPv4-users also benefit from
this noise-reduction.
Move the call to socket after filling in sa, to make it more
apparent that errno can't change in between.
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
connect: correctly number ipv6 network adapter
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* oa/pull-reflog:
pull: remove extra space from reflog message
Conflicts:
git-pull.sh
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When executing "git pull" with no arguments, the reflog message was:
"pull : Fast-forward"
Signed-off-by: Ori Avtalion <ori@avtalion.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ms/reflog-show-is-default:
reflog: actually default to subcommand 'show'
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The reflog manpage says:
git reflog [show] [log-options] [<ref>]
the subcommand 'show' is the default "in the absence of any
subcommands". Currently this is only true if the user provided either
at least one option or no additional argument at all. For example:
git reflog master
won't work. Change this by actually calling cmd_log_reflog in
absence of any subcommand.
Signed-off-by: Michael Schubert <mschub@elegosoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jl/submodule-status-summary-doc:
Documentation/submodule: add command references and update options
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Reference the "git diff" and "git status" commands where they learned
functionality that in earlier git versions was only available through the
'summary' and 'status' subcommands of "git submodule".
The short option '-n' for '--summary-limit' was missing from the synopsis
and the --init option was missing from the "options" section, add those
there. And while at it, quote all options in backticks so they are
decorated properly in the output formats which support that.
Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jn/gitweb-config-list-case:
gitweb: Git config keys are case insensitive, make config search too
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"git config -z -l" that gitweb uses in git_parse_project_config() to
populate %config hash returns section and key names of config
variables in lowercase (they are case insensitive). When checking
%config in git_get_project_config() we have to take it into account.
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jl/submodule-update-quiet:
submodule: update and add must honor --quiet flag
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When using the --quiet flag "git submodule update" and "git submodule add"
didn't behave as the documentation stated. They printed progress output
from the clone, even though they should only print error messages.
Fix that by passing the -q flag to git clone in module_clone() when the
GIT_QUIET variable is set. Two tests in t7400 have been modified to test
that behavior.
Reported-by: Daniel Holtmann-Rice <flyingtabmow@gmail.com>
Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* js/ls-tree-error:
Ensure git ls-tree exits with a non-zero exit code if read_tree_recursive fails.
Add a test to check that git ls-tree sets non-zero exit code on error.
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In the case of a corrupt repository, git ls-tree may report an error but
presently it exits with a code of 0.
This change uses the return code of read_tree_recursive instead.
Improved-by: Jens Lehmann <Jens.Lehmann@web.de>
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Expected to fail at this commit, fixed by subsequent commit.
Additional tests of adhoc or uncategorised nature should be added to this
file.
Improved-by: Jens Lehmann <Jens.Lehmann@web.de>
Improved-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jn/gitweb-system-config:
gitweb: Introduce common system-wide settings for convenience
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Because of backward compatibility we cannot change gitweb to always
use /etc/gitweb.conf (i.e. even if gitweb_config.perl exists). For
common system-wide settings we therefore need separate configuration
file: /etc/gitweb-common.conf.
Long description:
gitweb currently obtains configuration from the following sources:
1. per-instance configuration file (default: gitweb_conf.perl)
2. system-wide configuration file (default: /etc/gitweb.conf)
If per-instance configuration file exists, then system-wide
configuration is _not used at all_. This is quite untypical and
suprising behavior.
Moreover it is different from way git itself treats /etc/git.conf. It
reads in stuff from /etc/git.conf and then local repos can change or
override things as needed. In fact this is quite beneficial, because
it gives site admins a simple and easy way to give an automatic hint
to a repo about things the admin would like.
On the other hand changing current behavior may lead to the situation,
where something in /etc/gitweb.conf may interfere with unintended
interaction in the local repository. One solution would be to
_require_ to do explicit include; with read_config_file() it is now
easy, as described in gitweb/README (description introduced in this
commit).
But as J.H. noticed we cannot ask people to modify their per-instance
gitweb config file to include system-wide settings, nor we can require
them to do this.
Therefore, as proposed by Junio, for gitweb to have centralized config
elements while retaining backwards compatibility, introduce separate
common system-wide configuration file, by default /etc/gitweb-common.conf
Noticed-by: Drew Northup <drew.northup@maine.edu>
Helped-by: John 'Warthog9' Hawley <warthog9@kernel.org>
Inspired-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jk/reset-reflog-message-fix:
reset: give better reflog messages
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The reset command creates its reflog entry from argv.
However, it does so after having run parse_options, which
means the only thing left in argv is any non-option
arguments. Thus you would end up with confusing reflog
entries like:
$ git reset --hard HEAD^
$ git reset --soft HEAD@{1}
$ git log -2 -g --oneline
8e46cad HEAD@{0}: HEAD@{1}: updating HEAD
1eb9486 HEAD@{1}: HEAD^: updating HEAD
However, we must also consider that some scripts may set
GIT_REFLOG_ACTION before calling reset, and we need to show
their reflog action (with our text appended). For example:
rebase -i (squash): updating HEAD
On top of that, we also set the ORIG_HEAD reflog action
(even though it doesn't generally exist). In that case, the
reset argument is somewhat meaningless, as it has nothing to
do with what's in ORIG_HEAD.
This patch changes the reset reflog code to show:
$GIT_REFLOG_ACTION: updating {HEAD,ORIG_HEAD}
as before, but only if GIT_REFLOG_ACTION is set. Otherwise,
show:
reset: moving to $rev
for HEAD, and:
reset: updating ORIG_HEAD
for ORIG_HEAD (this is still somewhat superfluous, since we
are in the ORIG_HEAD reflog, obviously, but at least we now
mention which command was used to update it).
While we're at it, we can clean up the code a bit:
- Use strbufs to make the message.
- Use the "rev" parameter instead of showing all options.
This makes more sense, since it is the only thing
impacting the writing of the ref.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jc/diff-index-refactor:
diff-lib: refactor run_diff_index() and do_diff_cache()
diff-lib: simplify do_diff_cache()
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The latter is meant to be an API for internal callers that want to inspect
the resulting diff-queue, while the former is an implementation of "git
diff-index" command. Extract the common logic into a single helper
function and make them thin wrappers around it.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Since 34110cd (Make 'unpack_trees()' have a separate source and
destination index, 2008-03-06), we can run unpack_trees() without munging
the index at all, but do_diff_cache() tried ever so carefully to work
around the old behaviour of the function.
We can just tell unpack_trees() not to touch the original index and there
is no need to clean-up whatever the previous round has done.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
filter-branch: Export variable `workdir' for --commit-filter
Documentation/Makefile: add *.pdf to `clean' target
Documentation: ignore *.pdf files
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According to `git help filter-branch':
--commit-filter <command>
...
You can use the _map_ convenience function in this filter,
and other convenience functions, too...
...
However, it turns out that `map' hasn't been usable because it depends
on the variable `workdir', which is not propogated to the environment
of the shell that runs the commit-filter <command> because the
shell is created via a simple-command rather than a compound-command
subshell:
@SHELL_PATH@ -c "$filter_commit" "git commit-tree" \
$(git write-tree) $parentstr < ../message > ../map/$commit ||
die "could not write rewritten commit"
One solution is simply to export `workdir'. However, it seems rather
heavy-handed to export `workdir' to the environments of all commands,
so instead this commit exports `workdir' for only the duration of the
shell command in question:
workdir=$workdir @SHELL_PATH@ -c "$filter_commit" "git commit-tree" \
$(git write-tree) $parentstr < ../message > ../map/$commit ||
die "could not write rewritten commit"
Signed-off-by: Michael Witten <mfwitten@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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user-manual.pdf is not removed by `make clean'; fix it.
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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user-manual.pdf is generated by the build and therefore
should be ignored by git.
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* tc/minix:
Makefile: add Minix configuration options.
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Add a $(uname_S) case for Minix with the correct options.
Minix's linker needs all libraries specified explicitly.
Add NEEDS_SSL_WITH_CURL to add -lssl when using -lcurl.
Add NEEDS_IDN_WITH_CURL to add -lidn when using -lcurl.
When NEEDS_SSL_WITH_CURL is defined and NEEDS_CRYPTO_WITH_SSL
is defined, add -lcrypt to CURL_LIBCURL.
Change OPENSSL_LINK to OPENSSL_LIBSSL in the
NEEDS_CRYPTO_WITH_SSL conditional in the libopenssl
section. Libraries go in OPENSSL_LIBSSL, OPENSSL_LINK
is for linker flags.
Signed-off-by: Thomas Cort <tcort@minix3.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jc/pack-order-tweak:
pack-objects: optimize "recency order"
core: log offset pack data accesses happened
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This optimizes the "recency order" (see pack-heuristics.txt in
Documentation/technical/ directory) used to order objects within a
packfile in three ways:
- Commits at the tip of tags are written together, in the hope that
revision traversal done in incremental fetch (which starts by
putting them in a revision queue marked as UNINTERESTING) will see a
better locality of these objects;
- In the original recency order, trees and blobs are intermixed. Write
trees together before blobs, in the hope that this will improve
locality when running pathspec-limited revision traversal, i.e.
"git log paths...";
- When writing blob objects out, write the whole family of blobs that use
the same delta base object together, by starting from the root of the
delta chain, and writing its immediate children in a width-first
manner, in the hope that this will again improve locality when reading
blobs that belong to the same path, which are likely to be deltified
against each other.
I tried various workloads in the Linux kernel repositories (HEAD at
v3.0-rc6-71-g4dd1b49) packed with v1.7.6 and with this patch, counting how
large seeks are needed between adjacent accesses to objects in the pack,
and the result looks promising. The history has 2072052 objects, weighing
some 490MiB.
* Simple commit-only log.
$ git log >/dev/null
There are 254656 commits in total.
v1.7.6 with patch
Total number of access : 258,031 258,032
0.0% percentile : 12 12
10.0% percentile : 259 259
20.0% percentile : 294 294
30.0% percentile : 326 326
40.0% percentile : 363 363
50.0% percentile : 415 415
60.0% percentile : 513 513
70.0% percentile : 857 858
80.0% percentile : 10,434 10,441
90.0% percentile : 91,985 91,996
95.0% percentile : 260,852 260,885
99.0% percentile : 1,150,680 1,152,811
99.9% percentile : 3,148,435 3,148,435
Less than 2MiB seek: 99.70% 99.69%
95% of the pack accesses look at data that is no further than 260kB
from the previous location we accessed. The patch does not change the
order of commit objects very much, and the result is very similar.
* Pathspec-limited log.
$ git log drivers/net >/dev/null
The path is touched by 26551 commits and merges (among 254656 total).
v1.7.6 with patch
Total number of access : 559,511 558,663
0.0% percentile : 0 0
10.0% percentile : 182 167
20.0% percentile : 259 233
30.0% percentile : 357 304
40.0% percentile : 714 485
50.0% percentile : 5,046 3,976
60.0% percentile : 688,671 443,578
70.0% percentile : 319,574,732 110,370,100
80.0% percentile : 361,647,599 123,707,229
90.0% percentile : 393,195,669 128,947,636
95.0% percentile : 405,496,875 131,609,321
99.0% percentile : 412,942,470 133,078,115
99.5% percentile : 413,172,266 133,163,349
99.9% percentile : 413,354,356 133,240,445
Less than 2MiB seek: 61.71% 62.87%
With the current pack heuristics, more than 30% of accesses have to
seek further than 300MB; the updated pack heuristics ensures that less
than 0.1% of accesses have to seek further than 135MB. This is largely
due to the fact that the updated heuristics does not mix blobs and
trees together.
* Blame.
$ git blame drivers/net/ne.c >/dev/null
The path is touched by 34 commits and merges.
v1.7.6 with patch
Total number of access : 178,147 178,166
0.0% percentile : 0 0
10.0% percentile : 142 139
20.0% percentile : 222 194
30.0% percentile : 373 300
40.0% percentile : 1,168 837
50.0% percentile : 11,248 7,334
60.0% percentile : 305,121,284 106,850,130
70.0% percentile : 361,427,854 123,709,715
80.0% percentile : 388,127,343 128,171,047
90.0% percentile : 399,987,762 130,200,707
95.0% percentile : 408,230,673 132,174,308
99.0% percentile : 412,947,017 133,181,160
99.5% percentile : 413,312,798 133,220,425
99.9% percentile : 413,352,366 133,269,051
Less than 2MiB seek: 56.47% 56.83%
The result is very similar to the pathspec-limited log above, which
only looks at the tree objects.
* Packing recent history.
$ (git for-each-ref --format='^%(refname)' refs/tags; echo HEAD) |
git pack-objects --revs --stdout >/dev/null
This should pack data worth 71 commits.
v1.7.6 with patch
Total number of access : 11,511 11,514
0.0% percentile : 0 0
10.0% percentile : 48 47
20.0% percentile : 134 98
30.0% percentile : 332 178
40.0% percentile : 1,386 293
50.0% percentile : 8,030 478
60.0% percentile : 33,676 1,195
70.0% percentile : 147,268 26,216
80.0% percentile : 9,178,662 464,598
90.0% percentile : 67,922,665 965,782
95.0% percentile : 87,773,251 1,226,102
99.0% percentile : 98,011,763 1,932,377
99.5% percentile : 100,074,427 33,642,128
99.9% percentile : 105,336,398 275,772,650
Less than 2MiB seek: 77.09% 99.04%
The long-tail part of the result looks worse with the patch, but
the change helps majority of the access. 99.04% of the accesses
need less than 2MiB of seeking, compared to 77.09% with the current
packing heuristics.
* Index pack.
$ git index-pack -v .git/objects/pack/pack*.pack
v1.7.6 with patch
Total number of access : 2,791,228 2,788,802
0.0% percentile : 9 9
10.0% percentile : 140 89
20.0% percentile : 233 167
30.0% percentile : 322 235
40.0% percentile : 464 310
50.0% percentile : 862 423
60.0% percentile : 2,566 686
70.0% percentile : 25,827 1,498
80.0% percentile : 1,317,862 4,971
90.0% percentile : 11,926,385 119,398
95.0% percentile : 41,304,149 952,519
99.0% percentile : 227,613,070 6,709,650
99.5% percentile : 321,265,121 11,734,871
99.9% percentile : 382,919,785 33,155,191
Less than 2MiB seek: 81.73% 96.92%
As the index-pack command already walks objects in the delta chain
order, writing the blobs out in the delta chain order seems to
drastically improve the locality of access.
Note that a half-a-gigabyte packfile comfortably fits in the buffer cache,
and you would unlikely to see much performance difference on a modern and
reasonably beefy machine with enough memory and local disks. Benchmarking
with cold cache (or over NFS) would be interesting.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In a workload other than "git log" (without pathspec nor any option that
causes us to inspect trees and blobs), the recency pack order is said to
cause the access jump around quite a bit. Add a hook to allow us observe
how bad it is.
"git config core.logpackaccess /var/tmp/pal.txt" will give you the log
in the specified file.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Many examples of git command invocation are given in asciidoc listing
blocks, which makes them monospaced and avoids further interpretation of
special characters. Some manpages make a list of examples, like:
git foo::
Run git foo.
git foo -q::
Use the "-q" option.
to quickly show many variants. However, they can sometimes be hard to
read, because they are shown in a proportional-width font (so, for
example, seeing the difference between "-- foo" and "--foo" can be
difficult).
This patch puts all such examples into backticks, which gives the
equivalent formatting to a listing block (i.e., monospaced and without
character interpretation).
As a bonus, this also fixes an example in the git-push manpage, in which
"git push origin :::" was accidentally considered a newly-indented list,
and not a list item with "git push origin :" in it.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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