Pre-Caching (readahead-list) of FIREFOX to start it faster!

kEiNsTeiN · Guru Joined: 29 Apr 2005 Posts: 361 Location: Germany

Hi! I've read a couple of topics on how-to get stuff to start faster, there's that ramdisk-method, cat * >> /dev/null, and there is the package called "readahead-list", which does the latter one automagically.

Now what I need: Is there any Portage-Programm or switch, that will output all the files and files of dependencies of a specific programm, in my case Firefox?

emerge --listfilesdamnit firefox >> /etc/readahead-list/runlevel-default

and I get a pretty output with alle the files, newline separated, to they can be loaded on bootup...

It should be possible, since portage keeps track of all installed files and where they belong to, I just dont know where it's saved

I'd appreciate any help!

Thanks

kEiNsTeiN

PS: W00000t, POST 100!!!!
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Philantrop · Posted: Wed Jul 19, 2006 5:17 am Post subject:

LinuxMan · Posted: Wed Jul 19, 2006 9:20 am Post subject:

emerge --listfilesdamnit firefox
!!! Error: --listfilesdamnit is an invalid option.
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SORRY FOR MY VERY VERY VERY VERY BAD ENGLISH

kEiNsTeiN · Guru Joined: 29 Apr 2005 Posts: 361 Location: Germany

linuxman.... I hope you were kidding

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LinuxMan · Posted: Wed Jul 19, 2006 12:20 pm Post subject:

Philantrop · Posted: Wed Jul 19, 2006 1:02 pm Post subject:

kEiNsTeiN, I hope "equery f" was what you were looking for.

What I forgot to mention earlier is the possibility of prelinking which is supposed to speed up the starting process as well. I'm using it myself but I haven't noticed much gains but maybe you'd like to try it anyway:

http://www.gentoo.org/doc/en/prelink-howto.xml
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kEiNsTeiN · Guru Joined: 29 Apr 2005 Posts: 361 Location: Germany

yes, thank you, that was what I was looking for. But if I do:

s0ulslack · Posted: Wed Jul 19, 2006 3:57 pm Post subject:

kEiNsTeiN · Guru Joined: 29 Apr 2005 Posts: 361 Location: Germany

Hi, sorry for answering so late. Thank you for all your help so far, but I've got another question: I just prelinked my system (which includes Firefox-bin). BEcause I dont fully unterstand prelinking, do I have to readahead only Firefox, or also the output of "ldd /usr/lib....."? Or should there actually be an output of ldd if prelinking was successful? I thought prelink puts all libraries into the executable? But the output of ldd stayed the same....

WHAT?
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Philantrop · Posted: Thu Jul 20, 2006 12:09 pm Post subject:

You would have to use "equery b" on each of the results of the "ldd" command to find out which package you're looking for. Then use "equery f" again (like you did for Firefox) and read-ahead all that stuff. I really don't think it's worth the effort but that would be a way to do it.

As for prelinking, there wouldn't be any change in ldd's output. What you think of is static linking (and, no, you don't really want to try that).
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zxy · Posted: Mon Aug 14, 2006 6:26 am Post subject:

You can get to the linked libraries list this way.
For gdm for example.