| 1 |
On Saturday 05 January 2008, reader@×××××××.com wrote: |
| 2 |
> > to de-junk a default config - even if you don't know what you do, |
| 3 |
> > is in realm of half an hour to an hour. If you read everything. |
| 4 |
> |
| 5 |
> Do you have a de-junked .config that I can diff against the |
| 6 |
> default.. it would be a way to see what kinds of things get dropped. |
| 7 |
|
| 8 |
Drivers for stuff you don't need and you will likely never use. Like ham |
| 9 |
radio stuff, v4linux (first version), I20, on a notebook all the |
| 10 |
enterprise-grade connect-a-machine-to-storage-stuff like iSCSI and |
| 11 |
Infiniband, all of ISA and MCA and the pre-pci bus drivers, old disk |
| 12 |
types like mfm and on modern boards usually even IDE as well. |
| 13 |
|
| 14 |
Removing all these unused drivers is the single largest improvement in |
| 15 |
reducing kernel size. The general rule with drivers is that if you are |
| 16 |
familiar with YOUR hardware and you've never heard of something in the |
| 17 |
config then you don't have it and don't need it :-) |
| 18 |
|
| 19 |
Complete kernel sub-systems are a bit harder, although some are still |
| 20 |
obvious. Like virtualisation. I assure you that if you have never heard |
| 21 |
of kvm and paravirt, then you certainly don't need it. |
| 22 |
|
| 23 |
With other stuff I usually end up leaving them in and removing things |
| 24 |
gradually as I compile the next kernel and learn more about stuff out |
| 25 |
there. If say HPET intrigues you and you want to know more, then Google |
| 26 |
it. Tomorrow you can do another one. |
| 27 |
|
| 28 |
Like I said in an earlier mail, it's not an easy process. It's only easy |
| 29 |
if you know most of it already - like Volker. I'd guess he has long |
| 30 |
since forgotten what it took to learn everything he knows, so of |
| 31 |
course "It's obvious!"... |
| 32 |
|
| 33 |
Comparing his and your configs is mostly pointless as your machines will |
| 34 |
differ considerably. The config file is >70k and even on two recent |
| 35 |
standard ubuntu configs the differences are over 1000 lines. Good luck |
| 36 |
with comparing that lot and trying to figure out what's going on :-) |
| 37 |
|
| 38 |
alan |
| 39 |
|
| 40 |
-- |
| 41 |
Alan McKinnon |
| 42 |
alan dot mckinnon at gmail dot com |
| 43 |
-- |
| 44 |
gentoo-user@g.o mailing list |
Archives