Hello, Yesterday I revisited the packaging of vienna-rna and saw that upstream already works with link-time optimisation. That is a good thing, speed-up is often enormous as in 20% - depending on how cluttered the source code is, so this saves both time and energy. This works by reducing code to execute as in
$ dpkg -c ../vsearch_2.13.6-2_amd64.deb # with LTO ... -rwxr-xr-x root/root 334344 2019-08-03 14:59 ./usr/bin/vsearch ... $ dpkg -c ../vsearch_2.13.6-1_amd64.deb # current version ... -rwxr-xr-x root/root 362064 2019-08-03 14:55 ./usr/bin/vsearch ... So there is some 8% less code - and with a bit of luck this is primarily where there computation is. I have not uploaded that -2 version. This is since I am not the regular maintainer. That is Tim. But it doubt that he wants to have much of say on this, the package is more team maintained. So I ask the team: Shall we add LTO when we can feel like it? Cheers, Steffen -------- Forwarded Message -------- Subject: [med-svn] [Git][med-team/vsearch][master] Added link-time optimisation Date: Sat, 03 Aug 2019 13:09:50 +0000 From: Steffen Möller <[email protected]> Reply-To: [email protected] To: [email protected] GitLab Steffen Möller pushed to branch master at Debian Med / vsearch <https://salsa.debian.org/med-team/vsearch> Commits: * *88a717c4 <https://salsa.debian.org/med-team/vsearch/commit/88a717c4cd255f926bb8008e9dc2d22cd4c45914>* by Steffen Moeller /at 2019-08-03T13:09:08Z/ Added link-time optimisation 2 changed files: * debian/changelog <#9c96da0e9f91d7d8937b69b524702c106258f0d1> * debian/rules <#8756c63497c8dc39f7773438edf53b220c773f67> Changes: # *debian/changelog* <https://salsa.debian.org/med-team/vsearch/commit/88a717c4cd255f926bb8008e9dc2d22cd4c45914#9c96da0e9f91d7d8937b69b524702c106258f0d1> ------------------------------------------------------------------------ 1 +vsearch (2.13.6-2) UNRELEASED; urgency=medium 2 + 3 +* Team upload 4 + 5 +* Added link-time optimization. 6 + 7 +-- Steffen Moeller <[email protected]> Sat, 03 Aug 2019 14:59:33 +0200 8 + 1 9 vsearch (2.13.6-1) unstable; urgency=medium 2 10 3 11 * Team upload. # *debian/rules* <https://salsa.debian.org/med-team/vsearch/commit/88a717c4cd255f926bb8008e9dc2d22cd4c45914#8756c63497c8dc39f7773438edf53b220c773f67> ------------------------------------------------------------------------ ... ... @@ -18,6 +18,8 @@ else 18 18 endif 19 19 20 20 export DEB_BUILD_MAINT_OPTIONS = hardening=+all 21 +export DEB_CXXFLAGS_MAINT_APPEND = -flto 22 +export DEB_LDFLAGS_MAINT_APPEND = -flto 21 23 22 24 %: 23 25 dh $@ — View it on GitLab <https://salsa.debian.org/med-team/vsearch/commit/88a717c4cd255f926bb8008e9dc2d22cd4c45914>. You're receiving this email because of your account on salsa.debian.org. If you'd like to receive fewer emails, you can adjust your notification settings.
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