revisit: turning some of the "always used" modules to built-in

Joshua Baker-LePain jlb17 at duke.edu
Mon Jun 23 17:33:20 UTC 2008


On Mon, 23 Jun 2008 at 8:20am, Arjan van de Ven wrote

> On Mon, 23 Jun 2008 10:48:43 -0400 (EDT)
> Joshua Baker-LePain <jlb17 at duke.edu> wrote:
>
>> On Sun, 22 Jun 2008 at 11:42am, Arjan van de Ven wrote
>>
>>> Category 3: popular/very common and makes the system more robust
>>> ----------------------------------------------------------------
>>> Rationale: having these built in makes the system more robust, also
>>>           in case of failure
>>> - ahci (default storage for all new systems; means that there the
>>> system always has the / device driver)
>>
>> This isn't the default for all new systems -- lots of folks boot off
>> SCSI/RAID.
>
> ... and then have the cdrom hang of ahci.

What cdrom?  ;)

>>> Category 4: VERY popular
>>> ------------------------
>>> Rationale: pretty much always loaded in default installs
>>> - snd_seq_dummy, snd_seq, snd_seq_device,
>>>  snd_pcm, snd_timer, snd_page_alloc, snd
>>
>> Completely useless and unwanted on servers/HPC nodes.
>
> yet tends to get loaded ;)

Not on my systems!

>> It seems that there's an assumption here that Fedora = desktop.
>> While there's obviously a lot of that, I've seen it on a fair number
>> of servers and it is a great fit for HPC nodes.
>
> No that wasn't my assumption actually. My assumption was that those
> things are either always loaded, extremely likely loaded by default or
> for robustness (say AHCI). I realize it won't hit 100% but... the worst
> case downside is a tiny bit of wasted memory. Yawn.
> With the upsides I mentioned in my mail.. for me it's worth the
> tradeoff for at least almost all of these.

I can definitely see that point of view -- just throwing a few things out 
there.

Thanks.

-- 
Joshua Baker-LePain
QB3 Shared Cluster Sysadmin
UCSF




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