KIO directory listing - CPU slows down SSD

[Frank Reininghaus]

Hi,

2014-06-02 23:39 GMT+02:00 Frank Reininghaus:
> Hi,
>
> 2014-06-02 20:54 GMT+02:00 Mark Gaiser:
>> On Mon, Jun 2, 2014 at 6:42 PM, Aaron J. Seigo wrote:
>>> On Thursday, May 29, 2014 16:32:28 Mark Gaiser wrote:
>>>> dolphin on a massive folder. In fact, those that use kio::listdir for
>>>> listing folders only have interfaces that become usable when all
>>>> entries are fetched.
>>>
>>> assuming these UIs receive maintenance over the next years, this pattern is
>>> likely to fade away. instant feedback and incremental listing is a current
>>> reality.
>>>
>>> you know what would be very nice (but rather complex to achieve...)? for the
>>> client side of a KIO listing to say "i only want the first N items anyways,
>>> i'll let you know when i can handle more..." and for sorting to be optionally
>>> done on the slave side.
>>
>> That would be very nice since you would cut IPC communication
>> massively (depending on the folder) to just those that you see which
>> would result in even insanely large folders to be presented to the
>> user near instantly.
>>
>> But don't you just move logic to the slave that way? And lose
>> flexibility in the apps using the slave (like dolphin? Oh and
>> complicating kio "a bit" to pass a sorting and/or grouping style.
>> Right now it's not really difficult to add a completely new sort order
>> in dolphin, but that becomes very difficult when you want to let the
>> slave do the sorting.
>
> Yes, such an approach would indeed require additional complexity in
> KIO and the slaves and would sacrifice flexibility.
>
> Therefore, it might be questionable if this is really the way to go -
> I didn't really mean that this should be implemented when I said that
> I had also thought about this approach in my reply to Aaron.
> Sometimes, I just dream and think about things that we could do if we
> had infinite resources ;-)

As a side note, if we had infinite resources, making Dolphin QML-based
would also have a high priority for me, but since my resources are
quite limited, I will probably not be able to take part in any such
effort in the near future.

Best regards,
Frank