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| author |   Robert Yang <liezhi.yang@windriver.com> | 2018-11-22 19:51:59 +0800 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2018-11-22 12:19:26 +0000 |
| commit | 8b31c919814b8bdf25b3381053656523c001ae0d (patch) | |
| tree | 6b37b6be29ae5f6c3c46d4c3f03c20df42fa5c44 /meta/classes/sstate.bbclass | |
| parent | 07b59afd52244410d8d833e6dfe262d952e5e344 (diff) | |
| download | openembedded-core-8b31c919814b8bdf25b3381053656523c001ae0d.tar.gz | |
sstate.bbclass: set SSTATE_EXTRAPATHWILDCARD explicitly
The glob.glob("/sstate/*/*/") is very time consuming, set
SSTATE_EXTRAPATHWILDCARD explicity to avoid that. This can save a lot of time
when there are many sstate files.
For example, I have more than 600,000 sstate files:
* Before
- Without disk caches
$ time python3 -c 'import glob; glob.glob("/sstate-cache/*/*/sstate:quilt-native:x86_64-linux:0.65:r0:x86_64:3:*_populate_sysroot.tgz*")'
real 4m32.583s
user 0m5.768s
sys 0m12.892s
- With disk caches
$ time python3 -c 'import glob; glob.glob("/sstate-cache/*/*/sstate:quilt-native:x86_64-linux:0.65:r0:x86_64:3:*_populate_sysroot.tgz*")'
real 0m4.111s
user 0m2.348s
sys 0m1.756s
* After
$ time python3 -c 'import glob; glob.glob("/sstate-cache.bak/universal/*/sstate:quilt-native:x86_64-linux:0.65:r0:x86_64:3:*_populate_sysroot.tgz*")'
- Without disk caches:
real 0m7.928s
user 0m0.172s
sys 0m0.124s
- With disk caches:
real 0m0.131s
user 0m0.088s
sys 0m0.044s
We can see that it saves about 3.8s with disk caches, and saves about 264s
without disk caches.
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/classes/sstate.bbclass')
| -rw-r--r-- | meta/classes/sstate.bbclass | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass index efb0096c70..94fde6d30b 100644 --- a/meta/classes/sstate.bbclass +++ b/meta/classes/sstate.bbclass @@ -101,7 +101,7 @@ python () { if bb.data.inherits_class('native', d) or bb.data.inherits_class('crosssdk', d) or bb.data.inherits_class('cross', d): d.setVar('SSTATE_EXTRAPATH', "${NATIVELSBSTRING}/") d.setVar('BB_HASHFILENAME', "True ${SSTATE_PKGSPEC} ${SSTATE_SWSPEC}") - d.setVar('SSTATE_EXTRAPATHWILDCARD', "*/") + d.setVar('SSTATE_EXTRAPATHWILDCARD', "${NATIVELSBSTRING}/") unique_tasks = sorted(set((d.getVar('SSTATETASKS') or "").split())) d.setVar('SSTATETASKS', " ".join(unique_tasks)) |