Re: PM related performance degradation on OMAP3

[Gary Thomas <gary@mlbassoc.com>]

On 2012-04-12 10:57, Kevin Hilman wrote:
> +Felipe for EHCI question
>
> Gary Thomas<gary@mlbassoc.com>  writes:
>
> [...]
>
>> This worked a treat, thanks.  My network performance is better
>> now, but still not what it was.  The same TFTP transfer now takes
>> 71 seconds, so about 50% slower than on the 3.0 kernel.  Applying the
>> second [unnamed] patch (arch/arm/mach-omap2/cpuidle34xx.c) made no difference.
>
> And does a CONFIG_PM=n kernel get you back to your v3.0 performance?

Correct.

>
>> I am interested in having PM working as I'm designing a battery powered
>> portable unit, so I need to keep pursuing this.
>
> So do I. :)
>
>> Note: I noticed that when I built with CONFIG_PM off and no other
>> changes, my EHCI USB didn't work properly.  Should this be the case?
>
> Probably not, but haven't tested EHCI USB.  I've Cc'd Felipe to see if
> he has any ideas why EHCI wouldn't work with CONFIG_PM=n.

Thanks

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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