Bug 11651

Summary:	test_sstate_noop_samesigs performance when there are differences is dire
Product:	[QA/Testing] Build Testing	Reporter:	Richard Purdie <richard.purdie>
Component:	general	Assignee:	Leonardo Sandoval Gonzalez <leonardo.sandoval.gonzalez>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	Medium	CC:	anibal.limon
Version:	unspecified
Target Milestone:	2.4
Hardware:	x86
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	---
Verified:		Documentation change:	No (bug/feature does not impact docs)

Description Richard Purdie 2017-06-13 09:08:14 UTC

oe-selftest -r sstatetests.SStateTests.test_sstate_noop_samesigs

I had a local issue where a function depended on BB_NUMBER_THREADS in global scope (in do_package_ipk). This selftest took hours to run. The reasons were that:

a) The test forces single threading (easy fix, I'll send a patch)
b) It loops over calling bitbake-diffsigs on every hash difference thanks to: http://git.yoctoproject.org/cgit.cgi/poky/commit/meta/lib/oeqa/selftest/sstatetests.py?id=85dbd7bf9e4b6eccdbb8102e462dd681240c1c57

Whilst bitbake-diffsigs is useful we probably need to cap the output at X (say 20?) differences.

Comment 1 Richard Purdie 2017-06-13 09:12:37 UTC

One quick fix may be to call the python function instead of using process and a new python interpreter each time.

Comment 2 Leonardo Sandoval Gonzalez 2017-08-04 19:01:44 UTC

patches sent to the mailing list:

http://lists.openembedded.org/pipermail/openembedded-core/2017-August/140480.html and 81.

Comment 3 Leonardo Sandoval Gonzalez 2017-08-16 19:29:48 UTC

Merged at

a2e2f434cd: Leonardo Sandoval: Fri Aug 11 00:08:33 2017 +0100: sstatetests: limit the number of signature comparisons when differ

5dd65cf502: Leonardo Sandoval: Tue Aug 8 12:53:02 2017 +0100: sstatetests: Use python function instead of bitbake-diffsigs script