Re: Include prelink in fedora arm?

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On Thu, 08 Sep 2011 11:28:52 +0200, Gordan Bobic wrote:
> On Wed, 7 Sep 2011 18:09:34 +0200, Jan Kratochvil >  <jan.kratochvil@xxxxxxxxxx> wrote:
> > No.  Please read /etc/sysconfig/prelink and 
> > PRELINK_FULL_TIME_INTERVAL, only
> > once per two weeks.
> 
>  I meant every time prelink is run, not every time the binary is run.

There is some misunderstanding here.  prelink is run daily and it only
prelinks newly installed/upgraded executables, it does not touch already
prelinked executables.  Once per two weeks it re-prelinks everything.

So if your concerns are about changed executables content (for flash wear
leveling?) that happens at most once per two weeks.  I believe this is
negligible change compared to other /var files changing all the time.


>  You are missing the main point - how much extra CPU and disk I/O is 
>  that going to take during the backup?

Less than all the runtime relocations when executing the programs all the
time.


Please keep at the facts and not trying to find any possible reason why to
avoid prelink.

prelink is expected even in the original ELF specification, before any such
program ever existed, as it is the only logical way how to execute ELF files.


Thanks,
Jan
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