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authorShawn O. Pearce <spearce@spearce.org>2007-07-18 02:49:44 (GMT)
committerShawn O. Pearce <spearce@spearce.org>2007-07-18 02:49:44 (GMT)
commitd164b7548ab61e50d4404d1fbc0da3a8f6c0cc87 (patch)
tree91d17e3e0bc12a444e9f738edec516d17bbbae0e /git-gui.sh
parent2370164f3ceb833b9b4128d80bdfcc81e58682f9 (diff)
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git-gui: Change our initial GC hint to be an estimate
Instead of running a full git-count-objects to count all of the loose objects we can get a reasonably close approximation by counting the number of files in the .git/objects/42 subdirectory. This works out reasonably well because the SHA-1 hash has a fairly even distribution, so every .git/objects/?? subdirectory should get a relatively equal number of files. If we have at least 8 files in .git/objects/42 than it is very likely there is about 8 files in every other directory, leaving us with around 2048 loose objects. This check is much faster, as we need to only perform a readdir of a single directory, and we can do it directly from Tcl and avoid the costly fork+exec. All of the credit on how clever this is goes to Linus Torvalds; he suggested using this trick in a post commit hook to repack every so often. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Diffstat (limited to 'git-gui.sh')
-rwxr-xr-xgit-gui.sh19
1 files changed, 14 insertions, 5 deletions
diff --git a/git-gui.sh b/git-gui.sh
index 5ca946a..cd2b093 100755
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -2560,12 +2560,21 @@ if {[is_enabled transport]} {
# -- Only suggest a gc run if we are going to stay running.
#
if {[is_enabled multicommit]} {
- set object_limit 2000
- if {[is_Windows]} {set object_limit 200}
- regexp {^([0-9]+) objects,} [git count-objects] _junk objects_current
+ set object_limit 8
+ if {[is_Windows]} {
+ set object_limit 1
+ }
+ set objects_current [llength [glob \
+ -directory [gitdir objects 42] \
+ -nocomplain \
+ -tails \
+ -- \
+ *]]
if {$objects_current >= $object_limit} {
+ set objects_current [expr {$objects_current * 256}]
+ set object_limit [expr {$object_limit * 256}]
if {[ask_popup \
- "This repository currently has $objects_current loose objects.
+ "This repository currently has approximately $objects_current loose objects.
To maintain optimal performance it is strongly recommended that you compress the database when more than $object_limit loose objects exist.
@@ -2573,7 +2582,7 @@ Compress the database now?"] eq yes} {
do_gc
}
}
- unset object_limit _junk objects_current
+ unset object_limit objects_current
}
lock_index begin-read