[U-Boot] [PATCH 1/2] mtd: vf610_nfc: remove caching of page in buffer

Stefan Agner stefan at agner.ch
Tue Apr 7 17:09:18 CEST 2015


On 2015-04-07 16:24, Bill Pringlemeir wrote:
> On  7 Apr 2015, stefan at agner.ch wrote:
>> On 2015-04-02 22:30, Bill Pringlemeir wrote:
>>> On  2 Apr 2015, stefan at agner.ch wrote:
> 
>>> [snip]
> 
>>> I also measured 'write performance' with the mtd_speedtest
>>> (performing similar patch to the Linux driver) and I see no
>>> difference.  I think a write benchmark is more appropriate to test
>>> this functionality?  While at least it seems that neither read nor
>>> write is affected by the simplification.
> 
>> On U-Boot, I just benchmarked the overall boot time since this is most
>> important for us. I plan to (re-)integrate the changes into the Linux
>> driver and check the performance again later this week.
> 
>> Thanks for for the write test. So I can take this as a Ack?
> 
> Of course, if you want it,
> 
> Acked-by: Bill Pringlemeir <bpringlemeir at nbsps.com>

Thx


> The OOB patch also significantly decreases UbiFS mounting time in Linux.
> I load Linux itself via tftp/network and not using u-boot with nand.  I
> guess I should try that.

Is it UBIFS mounting time or is it bad block scanning? Afaik, it should
speed up the latter significantly, but I don't see why it should speed
up the former.

--
Stefan


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