Re: [RFC PATCH] ARM: exynos_defconfig: Increase CONFIG_BLK_DEV_RAM_SIZE to 64K

[Alim Akhtar <alim.akhtar@samsung.com>]

Hi Javier,

On 10/19/2015 05:18 PM, Javier Martinez Canillas wrote:
> Hello Alim,
>
> On 10/19/2015 12:48 PM, Alim Akhtar wrote:
>> CONFIG_BLK_DEV_RAM_SIZE is currently set to 8K, which is a bit on the
>> smaller side, lets bump it up to 64K so that a bigger RAM_DISK can
>> be used with defconfig.
>>
>> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
>> ---
>
> I agree that 8KiB is too small and that should be bumped, I'm also
> not sure what the best size would be but 64KiB sounds reasonable
> to me. So for this patch:
>
> Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
>
Thanks
>> Every time I build exynos_defconfig, I need to manually change RAM_SIZE
>> to match my ramdisk image size. I am not sure what is the best ramdisk size
>> might be, but bumping it to 64K might be a reasonable one.
>>
>
> In case you are interested, I got some stats by doing grep on the ARM
> defconfigs using this [0]. Of course the sizes depends on the platform
> but just to have an idea about what sizes are more popular than others.
>
> SIZE	COUNT
> 1024	17
> 8192	43
> 10240	1
> 16384	20
> 20000	25
> 32768	36
> 65536	15
>
This is informative.
> [0]: http://hastebin.com/buqukimede.bash
>
> Best regards,
>