On Mon, Nov 08, 1999 at 04:21:02PM +0000, Riley Williams wrote:
> > What additional overhead is there when a module gets called?
>
> That varies from driver to driver, but with some drivers, there can be
> a LOT of extra overhead if the driver isn't already in memory.
Hehe, not only.
It also depends on how many modules are already registered !
I've benchmarked it and if you have more than some 1000 modules
in the kernel (I tried it with dummy modules (insmod -o dummy1 dummy.o;
insmod -o dummy2 dummy.o)) then the insert is very slow because
of the linked-list and resolving design (insert can take some seconds
for a do nothing module).
But the module code it self looks extremely clever to me.
--ciao - Stefan
"you have moved your mouse, please reboot to make this change take effect"
Stefan Traby phone: +43-3133-6107-2 Mitterlasznitzstr. 13 fax: +43-3133-6107-9 8302 Nestelbach mailto://stefan@sime.com Austria http://homepage.sime.com/stefan
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