Am 25.06.2014 01:12, schrieb David Turner:
> On Wed, 2014-06-25 at 00:52 +0200, Karsten Blees wrote:
>> Even more time is spent unpacking the HEAD tree, even with hot cache
>> (repacking with depth 10 reduces this to ~250ms, on SSD its just 7ms).
>> Perhaps caching the HEAD tree in an index extension could help here?
>
> This is approximately what the cache-tree extension does. However, it's
> a bit broken. I've been working on a fix, but slowly because my other
> work has taken me longer than expected. You can see the effect of the
> cache-tree extension by doing git reset --hard HEAD; this temporarily
> restores that extension.
>
Indeed:
01:32:35.965910 builtin/commit.c:1374 performance: 0.097505786 s:
cmd_status:setup
...
01:32:36.047534 preload-index.c:129 performance: 0.081458337 s:
read_index_preload
01:32:36.056204 read-cache.c:1226 performance: 0.008641527 s:
refresh_index
01:32:36.059237 builtin/commit.c:1385 performance: 0.002997060 s:
cmd_status:update_index
01:32:36.065163 wt-status.c:630 performance: 0.005732979 s:
wt_status_collect_changes_worktree
01:32:36.072078 wt-status.c:638 performance: 0.006832976 s:
wt_status_collect_changes_index
01:32:36.072150 wt-status.c:643 performance: 0.00374 s:
wt_status_collect_untracked
01:32:36.072211 trace.c:414 performance: 0.204069579 s: git
command: 'git' 'status' '-s' '-uno'
Thanks
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