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| author | Eric Wong <normalperson@yhbt.net> | 2014-10-27 01:39:39 +0000 |
|---|---|---|
| committer | Eric Wong <normalperson@yhbt.net> | 2014-10-27 01:39:39 +0000 |
| commit | 7676aff70973e617c3f58a8633db6d0e3ee99e45 (patch) | |
| tree | 899a9b16af6fb10d90c0abff458004b73e78a0dd | |
| parent | aee7d04c126b48a9871309ec65cecf88781b1d32 (diff) | |
| download | git-7676aff70973e617c3f58a8633db6d0e3ee99e45.tar.gz git-7676aff70973e617c3f58a8633db6d0e3ee99e45.tar.xz | |
git-svn: disable _rev_list memoization
This memoization appears unneeded as the check_cherry_pick2 cache is
in front of it does enough.
With this change applied, importing from local svn+ssh and http copies
of the R repo[1] takes only 2:00 (2 hours) on my system and the git-svn
process never uses more than 60MB RSS on my x86-64 GNU/Linux system[2].
This 60M measurement is only for the git-svn Perl process itself and
does not include memory used by git subprocesses accessing large packs
(subprocess memory usage _is_ measured by my time(1) tool).
Before this change, an import took longer (2:20) on svn+ssh:// but
git-svn used around 240MB during the imports. Worse yet, git-svn
ballooned to over 400M when writing out the cache to the filesystem.
I also tried removing memoization for `has_no_changes', too, but a
local copy of the R repository(*) was not close to finishing within
10 hours on my system.
[1] http://svn.r-project.org/R
[2] file:// repos causes libsvn to use more memory internally
Signed-off-by: Eric Wong <normalperson@yhbt.net>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
| -rw-r--r-- | perl/Git/SVN.pm | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/perl/Git/SVN.pm b/perl/Git/SVN.pm index 4364506ca..5f9d4690b 100644 --- a/perl/Git/SVN.pm +++ b/perl/Git/SVN.pm @@ -1600,7 +1600,6 @@ sub tie_for_persistent_memoization { my %lookup_svn_merge_cache; my %check_cherry_pick2_cache; my %has_no_changes_cache; - my %_rev_list_cache; tie_for_persistent_memoization(\%lookup_svn_merge_cache, "$cache_path/lookup_svn_merge"); @@ -1622,14 +1621,6 @@ sub tie_for_persistent_memoization { SCALAR_CACHE => ['HASH' => \%has_no_changes_cache], LIST_CACHE => 'FAULT', ; - - tie_for_persistent_memoization(\%_rev_list_cache, - "$cache_path/_rev_list"); - memoize '_rev_list', - SCALAR_CACHE => 'FAULT', - LIST_CACHE => ['HASH' => \%_rev_list_cache], - ; - } sub unmemoize_svn_mergeinfo_functions { @@ -1639,7 +1630,6 @@ sub tie_for_persistent_memoization { Memoize::unmemoize 'lookup_svn_merge'; Memoize::unmemoize 'check_cherry_pick2'; Memoize::unmemoize 'has_no_changes'; - Memoize::unmemoize '_rev_list'; } sub clear_memoized_mergeinfo_caches { |