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lib/oe/path: Fix performance issue got copyhardlinktree()

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With the directory copy was added to avoid race issues, it wasn't noticed that
tar was recursing the directories and copying files too. This is completely
crazy when we hardlink those files in the next command.

Resolve the issue by telling tar not to recurse. This gives a significant
performance boost to various parts of the system (do_package for linux-yocto
256s -> 178s for example).

(From OE-Core rev: 8b90ed084d59b4e07aa547255d327b25cfb2ee2b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie 2013-11-08 15:19:05 +00:00
parent 5e73287ad8
commit 8a07a176d7
1 changed files with 1 additions and 1 deletions
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2
meta/lib/oe/path.py
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@ -93,7 +93,7 @@ def copyhardlinktree(src, dst):
if (os.stat(src).st_dev == os.stat(dst).st_dev):
# Need to copy directories only with tar first since cp will error if two
# writers try and create a directory at the same time
cmd = 'cd %s; find . -type d -print | tar -cf - -C %s -p --files-from - | tar -xf - -C %s' % (src, src, dst)
cmd = 'cd %s; find . -type d -print | tar -cf - -C %s -p --files-from - --no-recursion | tar -xf - -C %s' % (src, src, dst)
check_output(cmd, shell=True, stderr=subprocess.STDOUT)
if os.path.isdir(src):
src = src + "/*"