On 19 Jul 2007 at 10:14, Christian Parpart wrote:

> Hi all,
> 
> I just migrated a standard gentoo/linux to a hardened profile including 
> hardened-sources with grsecurity enabled and PaX-disabled.
> 
> Well, it is basically used as a mySQL server, however, we do a biig sql db 
> import once a week to operate on it. the import took about 12 hours.
> but now, using the hardened sourced and the hardened profile built system it 
> really taked about 24+ hours.
> 
> this really confuses me. can it be because of the extra validations the 
> kernel-/userspace has to perform?

to decide where the extra time went, you should create a smaller
test case to reproduce the slowdown (something that runs, say, on
the order of a few minutes, not half a day) then do some profiling
with oprofile: the 100% overhead will stick out and we can investigate
further.

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