Resending since the last attempt bounced.
On Wed, Oct 16, 2013 at 03:21:31PM +0530, Siddhesh Poyarekar wrote: > On Tue, Oct 15, 2013 at 10:27:36PM +0200, Reindl Harald wrote: > > >> Do you really run "gnome-open --help" 1000 times per reasonable unit of > > >> time (or ever)? Please stop using bogus comparisons and highly > > >> contrived tests. They do nothing to help your argument. > > > > > > This isn't totally invalid. I assume that some shell scripts with tight > > > loops are the only thing that actually > > > benefits from prelinking today. People write those, unfortunately. > > > > it is - they are *not* loading a lot of dynmaic linked libraries > > It is spawning a program a bunch of times, which results in program > load time becoming all the more relevant. Shell scripts that spawn > multiple programs in tight loops are not exactly uncommon, so please > don't pretend that they don't exist. > > > [harry@srv-rhsoft:~]$ ldd /usr/bin/bash > > linux-vdso.so.1 => (0x00007fffc9764000) > > libtinfo.so.5 => /lib64/libtinfo.so.5 (0x00007f99b21aa000) > > libdl.so.2 => /lib64/libdl.so.2 (0x00007f99b1fa6000) > > libc.so.6 => /lib64/libc.so.6 (0x00007f99b1be4000) > > /lib64/ld-linux-x86-64.so.2 (0x00007f99b23ee000) > > > > > I'm attaching a deliberately badly written script which should be fairly > > > representative, alas. I can' benchmark it > > > right now because the system isn't idle, but if someone else wants to > > > have a go at it, be my guest. > > > > if you *only* can measure it if your system is *idle* than you have what we > > called > > "maske dby noise" already in this thread and that is *not* significant > > You haven't understood the point of the statement - a benchmark > measurement is reliable only if the 'before' and 'after' measurements > are done in identical conditions. In that context, an idle system is > the ideal pre-condition. That point has nothing to do with whether > the performance improvement is evident when the system is under any > amount of load. > > Siddhesh -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
