mirrors/poky
1
0
Fork 0
mirror of https://git.yoctoproject.org/poky synced 2026-05-30 00:20:08 +00:00
Code Issues Projects Releases Wiki Activity

package: Add cachedpath optimisation

Browse Source 
Currently, various standard library operations like os.walk(),
os.path.isdir() and os.path.islink() each call stat or lstat which
involves a syscall into the kernel. There is no caching since they could
conceivably have changed on disk. The result is that for something like
the do_package task of the kernel we're spending over two minutes making
868,000 individual stat calls for 23,000 files. This is suboptimal.

This patch adds lib/oe/cachedpath.py which are a set of replacement
functions for these operations which use cached stat data rather than
hitting the kernel each time. It gives a nice performance improvement
halving the build time of the kernel do_package.

(From OE-Core rev: 556dee0c4d6d8a87c0cddbd2f60fe5917d009f18)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie
2013-03-14 17:26:20 +00:00
parent cec0102647
commit add11fa1ab
3 changed files with 268 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta/classes/base.bbclass
+1 -1
View File
@@ -10,7 +10,7 @@ inherit utility-tasks
inherit metadata_scm
inherit logging
OE_IMPORTS += "os sys time oe.path oe.utils oe.data oe.package oe.packagegroup oe.sstatesig oe.lsb"
OE_IMPORTS += "os sys time oe.path oe.utils oe.data oe.package oe.packagegroup oe.sstatesig oe.lsb oe.cachedpath"
OE_IMPORTS[type] = "list"
def oe_import(d):