Am 15.10.2013 22:04, schrieb Florian Weimer: > On 10/15/2013 09:10 PM, Chris Adams wrote: >> Once upon a time, Jan Kratochvil <[email protected]> said: >>> It depends, for example in this case prelink saves 33% of time (and >>> battery): >>> i=0;time while [ $i -lt 1000 ];do /usr/bin/gnome-open --help >>> &>/dev/null;i=$[$i+1];done >> >> Do you really run "gnome-open --help" 1000 times per reasonable unit of >> time (or ever)? Please stop using bogus comparisons and highly >> contrived tests. They do nothing to help your argument. > > This isn't totally invalid. I assume that some shell scripts with tight > loops are the only thing that actually > benefits from prelinking today. People write those, unfortunately.
it is - they are *not* loading a lot of dynmaic linked libraries
[harry@srv-rhsoft:~]$ 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
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