kernel/git - git - PowerEL Git System

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Author	SHA1	Message	Date
Eric Wong	a5e0cedc0a	git-svn: add support for Perl SVN::* libraries This means we no longer have to deal with having bloated SVN working copies around and we get a nice performance increase as well because we don't have to exec the SVN binary and start a new server connection each time. Of course we have to manually manage memory with SVN::Pool whenever we can, and hack around cases where SVN just eats memory despite pools (I blame Perl, too). I would like to keep memory usage as stable as possible during long fetch/commit processes since I still use computers with only 256-512M RAM. commit should always be faster with the SVN library code. The SVN::Delta interface is leaky (or I'm not using it with pools correctly), so I'm forking on every commit, but that doesn't seem to hurt performance too much (at least on normal Unix/Linux systems where fork() is pretty cheap). fetch should be faster in most common cases, but probably not all. fetches will be faster where client/server delta generation is the bottleneck and not bandwidth. Of course, full-files are generated server-side via deltas, too. Full files are always transferred when they're updated, just like git-svnimport and unlike command-line svn. I'm also hacking around memory leaks (see comments) here by using some more forks. I've tested fetch with http://, https://, file://, and svn:// repositories, so we should be reasonably covered in terms of error handling for fetching. Of course, we'll keep plain command-line svn compatibility as a fallback for people running SVN 1.1 (I'm looking into library support for 1.1.x SVN, too). If you want to force command-line SVN usage, set GIT_SVN_NO_LIB=1 in your environment. We also require two simultaneous connections (just like git-svnimport), but this shouldn't be a problem for most servers. Less important commands: show-ignore is slower because it requires repository access, but -r/--revision <num> can be specified. graft-branches may use more memory, but it's a short-term process and is funky-filename-safe. Signed-off-by: Eric Wong <normalperson@yhbt.net>	19 years ago
Eric Wong	883d0a78d2	git-svn: Move all git-svn-related paths into $GIT_DIR/svn Since GIT_SVN_ID usage is probably going to become more widespread <evil grin>, we won't run the chance of somebody having a GIT_SVN_ID name that conflicts with one of the default directories that already exist in $GIT_DIR (branches/tags). Signed-off-by: Eric Wong <normalperson@yhbt.net>	19 years ago
Eric Wong	36f5b1f0c8	git-svn: ignore expansion of svn:keywords Unlike my earlier test patch, this also checks svn:eol-style and makes sure it's applied to working copy updates. This is definitely more correct than my original attempt at killing keyword expansions, but I still haven't tested it enough to know. Feedback would be much appreciated. Also changed assert_svn_wc_clean() to only work on the svn working copy. This requires a separate call to assert_tree() to check wc integrity against git in preparation for another change I'm planning. Signed-off-by: Eric Wong <normalperson@yhbt.net> Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago

Author

SHA1

Message

Date

Eric Wong

a5e0cedc0a

git-svn: add support for Perl SVN::* libraries

This means we no longer have to deal with having bloated SVN
working copies around and we get a nice performance increase as
well because we don't have to exec the SVN binary and start a
new server connection each time.

Of course we have to manually manage memory with SVN::Pool
whenever we can, and hack around cases where SVN just eats
memory despite pools (I blame Perl, too).  I would like to
keep memory usage as stable as possible during long fetch/commit
processes since I still use computers with only 256-512M RAM.

commit should always be faster with the SVN library code.  The
SVN::Delta interface is leaky (or I'm not using it with pools
correctly), so I'm forking on every commit, but that doesn't
seem to hurt performance too much (at least on normal Unix/Linux
systems where fork() is pretty cheap).

fetch should be faster in most common cases, but probably not all.
fetches will be faster where client/server delta generation is
the bottleneck and not bandwidth.  Of course, full-files are
generated server-side via deltas, too.  Full files are always
transferred when they're updated, just like git-svnimport and
unlike command-line svn.  I'm also hacking around memory leaks
(see comments) here by using some more forks.

I've tested fetch with http://, https://, file://, and svn://
repositories, so we should be reasonably covered in terms of
error handling for fetching.

Of course, we'll keep plain command-line svn compatibility as a
fallback for people running SVN 1.1 (I'm looking into library
support for 1.1.x SVN, too).  If you want to force command-line
SVN usage, set GIT_SVN_NO_LIB=1 in your environment.

We also require two simultaneous connections (just like
git-svnimport), but this shouldn't be a problem for most
servers.

Less important commands:

show-ignore is slower because it requires repository
access, but -r/--revision <num> can be specified.

graft-branches may use more memory, but it's a
short-term process and is funky-filename-safe.

Signed-off-by: Eric Wong <normalperson@yhbt.net>

19 years ago

Eric Wong

883d0a78d2

git-svn: Move all git-svn-related paths into $GIT_DIR/svn

Since GIT_SVN_ID usage is probably going to become more
widespread <evil grin>, we won't run the chance of somebody
having a GIT_SVN_ID name that conflicts with one of the default
directories that already exist in $GIT_DIR (branches/tags).

Signed-off-by: Eric Wong <normalperson@yhbt.net>

19 years ago

Eric Wong

36f5b1f0c8

git-svn: ignore expansion of svn:keywords

Unlike my earlier test patch, this also checks svn:eol-style and
makes sure it's applied to working copy updates.  This is
definitely more correct than my original attempt at killing
keyword expansions, but I still haven't tested it enough to
know.  Feedback would be much appreciated.

Also changed assert_svn_wc_clean() to only work on the svn
working copy.  This requires a separate call to assert_tree() to
check wc integrity against git in preparation for another change
I'm planning.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>

19 years ago

3 Commits (c6744349df5089133b7662e67aba28282b6a963f)