Le 26/10/2012 12:33, Adam Conrad a écrit : > On Fri, Oct 26, 2012 at 08:35:26AM +0200, Aurelien Jarno wrote: >> Le 26/10/2012 02:34, Adam Conrad a écrit : >>> Author: adconrad >>> Date: 2012-10-26 00:34:46 +0000 (Fri, 26 Oct 2012) >>> New Revision: 5338 >>> >>> Added: >>> glibc-package/branches/eglibc-2.16/debian/debhelper.in/libc-bin.triggers >>> glibc-package/branches/eglibc-2.16/debian/local/ldconfig_wrap >>> Modified: >>> glibc-package/branches/eglibc-2.16/debian/changelog >>> >>> glibc-package/branches/eglibc-2.16/debian/debhelper.in/libc-bin.lintian-overrides >>> glibc-package/branches/eglibc-2.16/debian/debhelper.in/libc-bin.postinst >>> glibc-package/branches/eglibc-2.16/debian/rules.d/debhelper.mk >>> Log: >>> Port over ldconfig trigger support from Ubuntu packages >> >> I don't think it's something needed. ldconfig has added sometimes ago an >> auxilliary cache avoiding that repetitive call to ldconfig are >> expensive. I think this should be reverted. > > When was this cache added? On a 2.15 system, this is definitely still a huge > benefit:
According to #447609 it was in 2.7. > root@shiva:~# export DPKG_MAINTSCRIPT_PACKAGE=foo > root@shiva:~# time ldconfig > > real 0m0.051s > user 0m0.008s > sys 0m0.008s > root@shiva:~# time ldconfig > > real 0m0.057s > user 0m0.016s > sys 0m0.008s > > root@shiva:~# unset DPKG_MAINTSCRIPT_PACKAGE > root@shiva:~# time ldconfig > > real 0m0.756s > user 0m0.023s > sys 0m0.023s > root@shiva:~# time ldconfig > > real 0m0.759s > user 0m0.008s > sys 0m0.031s > > This is on an ARM system that I haven't yet built 2.16 for (and these timings > are significantly harder to reproduce on my IvyBridge laptop, obviously), but > it certainly seems like the trigger is an obvious win here. > I recalled doing some tests (on amd64) and that the second call was taking almost no time. -- Aurelien Jarno GPG: 1024D/F1BCDB73 [email protected] http://www.aurel32.net -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
