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Date: Fri, 8 May 2015 20:24:21 +0200 From: Frans Klaver <fransklaver@...il.com> To: linux cbon <linuxcbon@...il.com> Cc: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: is kernel slower at loading for some hardware ? On Tue, May 05, 2015 at 12:20:31AM +0100, linux cbon wrote: > On Mon, May 4, 2015 at 8:50 AM, Frans Klaver <fransklaver@...il.com> wrote: > > On Mon, May 4, 2015 at 7:21 AM, linux cbon <linuxcbon@...il.com> wrote: > >> Hi, > >> during boot up, I am trying to find where the kernel takes more time > >> to do actions (is slower ?). > >> I looked at dmesg and found some places where it takes more time, but > >> not sure if this is normal : > (.......) > > All hardware is different and therefore initialization time can be > > different per component. Besides that, you're looking at something > > that depends on how verbose the driver's logs are. It may well be that > > the kernel is doing a lot of work, but just doesn't output anything > > that clears the minimum log level. > > Frans > > > Hi Frans, > I would like to have the maximal verbose logs, > can you please tell me what is the way to achieve this ? > And do you know the best way to find out where the kernel > is getting slow and is having problems ? > Thanks for your help. Maybe this page can help you further: http://elinux.org/Debugging_by_printing Good luck, Frans -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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