Re: Performance issue due to constant "modprobes"

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On Wednesday 2011-04-13 14:35, Ed W wrote:

>Hi
>
>> In iptables, the options --enable-static and --enable-shared are 
>> semantically different from other projects.
>
>Thanks for confirming - iptables also helpfully spells exactly this out
>in the INSTALL doc (+1 for open source documentation!!)

-1 to the user for not reading it ;-)

>>> Additionally, as helpfully pointed out by Jan, a chunk of my problem is
>>> my static iptables apparently trying to probe a kernel module which
>>> isn't incorporated into my kernel version.  I can't immediately see a
>>> solution to not uselessly probing for that (without patching iptables)?
>>> Any ideas?
>> 
>> I would have said it could be the missing SET module being the cause for 
>> your modprobe time accumulation, but since you also use iptables-restore 
>> that possibility, too, is eliminated.
>
>Yes, although these modules are being probed for even on a zero
>(missing) input to iptables-restore.  However, that seems consistent
>with a v1.4.10 iptables --enable-static based binary?  Presumably this
>just probes everything?

Yes, and that which does not exist in the kernel you pay with a modprobe 
call then. That would not only include SET, but also extensions long 
obsoleted, such as libipt_unclean's counterpart.
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