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Re: 8.0 performance issue when running build.sh?



On Fri, Aug 10, 2018 at 12:29:49AM +0200, Joerg Sonnenberger wrote:
> On Thu, Aug 09, 2018 at 08:14:57PM +0200, Jaromír Doleček wrote:
> > 2018-08-09 19:40 GMT+02:00 Thor Lancelot Simon <tls%panix.com@localhost>:
> > > On Thu, Aug 09, 2018 at 10:10:07AM +0200, Martin Husemann wrote:
> > >> 100.00    2054     14.18 kernel_lock            <all>
> > >>  47.43     846      6.72 kernel_lock            fileassoc_file_delete+20
> > >>  23.73     188      3.36 kernel_lock            intr_biglock_wrapper+16
> > >>  16.01     203      2.27 kernel_lock            scsipi_adapter_request+63
> > > Actually, I wonder if we could kill off the time spent by fileassoc.  Is
> > > it still used only by veriexec?  We can easily option that out of the build
> > > box kernels.
> > 
> > Or even better, make it less heavy?
> > 
> > It's not really intuitive that you could improve filesystem
> > performance by removing this obscure component.
> 
> If it is not in use, fileassoc_file_delete will short cut already.

...and of course, the check seems to be just useless. So yes, it should
be possible to make it much less heavy.

Joerg


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