From d164b7548ab61e50d4404d1fbc0da3a8f6c0cc87 Mon Sep 17 00:00:00 2001 From: "Shawn O. Pearce" Date: Tue, 17 Jul 2007 22:49:44 -0400 Subject: [PATCH] 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 --- git-gui.sh | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/git-gui.sh b/git-gui.sh index 5ca946a18..cd2b09372 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 -- 2.26.2