[patch/rfc] grafthistory: keep the downloaded pack, speed up git gc
Kalle Olavi Niemitalo <[email protected]>
| Newsgroups | gmane.comp.web.links |
|---|---|
| Message-ID | <[email protected]> |
To segregate the historical commits (can't remember why), I originally placed their pack in an alternate object store, but later I found that a *.keep file does the job as well. This gives a considerable speedup in git gc. It takes some more disk space but OTOH you might then run gc more often and have fewer loose objects. OK to push? grafthistory: keep the downloaded pack, speed up git gc --- commit df62c12c7e3a1153652d775101a1330f5b8156d8 tree 76b269ff5a291e6916713a0088881a2f6a1abdd3 parent 6139c2ffb5127a75aec176167e22298c693d339a author Kalle Olavi Niemitalo <[email protected]> Sun, 24 Feb 2008 22:25:30 +0200 committer Kalle Olavi Niemitalo <[email protected]> Sun, 24 Feb 2008 22:25:30 +0200 contrib/grafthistory.sh | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/contrib/grafthistory.sh b/contrib/grafthistory.sh index 447a638..7dd5ebc 100755 --- a/contrib/grafthistory.sh +++ b/contrib/grafthistory.sh @@ -19,6 +19,16 @@ cd "$GIT_DIR" echo "[grafthistory] Downloading the history" mkdir -p objects/pack cd objects/pack +# real user sys (tested in this order) +# 1m15.900s 0m59.732s 0m4.336s gc after clone&graft without *.keep +# 0m23.162s 0m17.549s 0m1.588s gc after clone&graft with *.keep +# 0m06.932s 0m04.440s 0m0.588s gc after clone&graft&gc with *.keep +# 0m32.214s 0m24.138s 0m2.284s gc after clone&graft&gc without *.keep +# Total size of .git/objects/pack/ was 90592 KiB without *.keep +# and 97397 KiB with *.keep. So *.keep reduced gc time by 70-80% +# but increased disk space usage by 7.5%. +echo "ELinks history converted from CVS. Keep this pack separate to speed up git gc." \ + > pack-0d6c5c67aab3b9d5d9b245da5929c15d79124a48.keep # pack-0d6c5c67aab3b9d5d9b245da5929c15d79124a48.idx is 3163784 bytes long. # Downloading it takes less than 6 seconds here, whereas generating it # with git index-pack takes over 4 minutes (750 MHz Duron, git 1.5.4.1). _______________________________________________ elinks-dev mailing list [email protected] http://linuxfromscratch.org/mailman/listinfo/elinks-dev
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