45d4657f3d
Pros: we are seeing a 10% performance boost for all python processes. Cons: The time to build python increases. This is because pgo (profile guided optimizations) need the unit tests for python to be invoked and then the entire package compiled a second time using the timing information from the unit test profiling data that is gathered. This commit sets up the src rpm environment for building python 2.7.5 - Needed to disable the tox unit test check phase since a couple tests fail due to build dependencies - Turn off dtrace and systemtap in the spec file - Use pgo for build in modules: https://bugs.python.org/issue26307 - Rollup cpython patches and add --enable-optimizations and --with-computed-gotos for optimized build These are the cpython commits pulled in: 4ff151a72a3331c514924a5e0d33747a91413fbd (Sept 18, 2015 pgo) c543a0fc3b2052c35fced09e1f96613625723508 (Jun 2 2016) (lto) 6d8fdfc84b8617476f3f497e93e9e7b6cecc5474 (Sept 8 2016) 794b2912acc1995afc6fe9501cc0ca8e56565325 (Sept 8 2016) b9999158545f3bc089b926086daa666b8e4c7caa (Nov 20) 2016 6a04ef7ceddae0930eba6cc57ba2ebfcef00abab Mar 28 2017 This still does not yield the same level of performance as a vanilla python 2.7.14 source tree which suggests there are other commits that would provide a performance boost. Change-Id: Iaddf7ead672412ad1878217ddcfaf88c9b0e2443 Signed-off-by: Al Bailey <Al.Bailey@windriver.com>
43 lines
1.1 KiB
Diff
43 lines
1.1 KiB
Diff
From ff1efc0b077c78bedead5fdc6792240806f5a97c Mon Sep 17 00:00:00 2001
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From: Al Bailey <Al.Bailey@windriver.com>
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Date: Wed, 28 Mar 2018 08:26:56 -0500
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Subject: [PATCH] Make Python Faster
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---
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SPECS/python.spec | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/SPECS/python.spec b/SPECS/python.spec
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index adc6815..fadf838 100644
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--- a/SPECS/python.spec
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+++ b/SPECS/python.spec
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@@ -1195,6 +1195,8 @@ Patch268: 00268-set-stream-name-to-None.patch
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# above:
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Patch5000: 05000-autotool-intermediates.patch
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+Patch9000: Rollup-optimization-commits.patch
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+
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# ======================================================
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# Additional metadata, and subpackages
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# ======================================================
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@@ -1591,6 +1593,7 @@ find -name "*~" |xargs rm -f
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%patch5000 -p0 -b .autotool-intermediates
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%endif
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+%patch9000 -p1
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# ======================================================
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# Configuring and building the code:
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@@ -1721,7 +1724,7 @@ BuildPython debug \
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BuildPython optimized \
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python \
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python%{pybasever} \
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- "" \
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+ "--enable-optimizations --with-computed-gotos" \
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true
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--
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1.8.3.1
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