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authorRobert Yang <liezhi.yang@windriver.com>2018-11-22 19:51:59 +0800
committerRichard Purdie <richard.purdie@linuxfoundation.org>2018-11-23 23:35:18 +0000
commit76276d90ce7fd0effe7c517206472b9dfe0c065c (patch)
tree4f39e1151b64e1cad5cccec4ef9fcbd4bb4951f5 /meta/classes/sstate.bbclass
parentbdda030127f32040df18501ccd95aac631e2335a (diff)
downloadpoky-76276d90ce7fd0effe7c517206472b9dfe0c065c.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. (From OE-Core rev: 8b31c919814b8bdf25b3381053656523c001ae0d) 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.bbclass2
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 () {
101 if bb.data.inherits_class('native', d) or bb.data.inherits_class('crosssdk', d) or bb.data.inherits_class('cross', d): 101 if bb.data.inherits_class('native', d) or bb.data.inherits_class('crosssdk', d) or bb.data.inherits_class('cross', d):
102 d.setVar('SSTATE_EXTRAPATH', "${NATIVELSBSTRING}/") 102 d.setVar('SSTATE_EXTRAPATH', "${NATIVELSBSTRING}/")
103 d.setVar('BB_HASHFILENAME', "True ${SSTATE_PKGSPEC} ${SSTATE_SWSPEC}") 103 d.setVar('BB_HASHFILENAME', "True ${SSTATE_PKGSPEC} ${SSTATE_SWSPEC}")
104 d.setVar('SSTATE_EXTRAPATHWILDCARD', "*/") 104 d.setVar('SSTATE_EXTRAPATHWILDCARD', "${NATIVELSBSTRING}/")
105 105
106 unique_tasks = sorted(set((d.getVar('SSTATETASKS') or "").split())) 106 unique_tasks = sorted(set((d.getVar('SSTATETASKS') or "").split()))
107 d.setVar('SSTATETASKS', " ".join(unique_tasks)) 107 d.setVar('SSTATETASKS', " ".join(unique_tasks))