[Interest] Interest Digest Wiki instructions for PI cross compile do not work for PostgreSQL support
Roland Hughes
roland at logikalsolutions.com
Fri Oct 20 00:06:43 CEST 2017
It's not misleading when it is a hog fattened way past market.
90% of the embedded systems I encounter have no GPU so the driver issue
is irrelevant. You get rid of all needless things to improve battery
life. Claiming an i.MX6 which most certainly must need grid power or
batteries the size of a house is the "normal" embedded processor for
medical devices or industrial control is simply ludicrous.
I was using a Pi-II not a 1. The Pi-II has waaaaaaaaaaaaaaaaaaaay more
horsepower than the vast majority of embedded systems I'm talking about.
Please do not mislead people. QML is a horrible wretched thing which
should never have seen the light of day. Offering up "The Microsoft
Solution" of "throw hardware and grid power at it" is simply no solution
for the vast majority of embedded systems especially in the medical field.
On 10/19/2017 02:04 PM, Filip Piechocki wrote:
> On Thu, Oct 19, 2017 at 2:43 PM, Roland Hughes
> <roland at logikalsolutions.com <mailto:roland at logikalsolutions.com>> wrote:
>
> Scroll down and watch the video. QML is an 800 lb gorilla trying
> to ride in a 2 cylinder car.
>
> http://www.logikalsolutions.com/wordpress/information-technology/raspberry-qt-part-12-qml-blows-big-stinky-chunks/
> <http://www.logikalsolutions.com/wordpress/information-technology/raspberry-qt-part-12-qml-blows-big-stinky-chunks/>
>
>
> Application used here is of course the best candidate for widgets
> implementation as it does not use QtQuick advantages.
>
> Do this:
> https://www.youtube.com/watch?v=wulbR2R1GpM
> in Qt Widgets and share your results.
>
> But please, do not mislead people. You run this app with software
> OpenGL on a device with really weak CPU. Xorg alone eats all resources
> of RPi 1 as it has no HW GPU acceleration.
> In my company we get 20-25 fps when rendering maps on a quite powerful
> (for embedded world) x86 and like 230% CPU usage (of 4 cores) as there
> is no linux driver for its GPU. Meanwhile - we get stable 60fps on
> i.MX6 DualLite (2 ARMv7 cores 792MHz) with 12-20% CPU usage. All done
> with QtQuick.
>
> Nasty worthless resource pig which exists only to pursue script
> kiddies.
>
>
> On 10/19/2017 04:38 AM, Vlad Stelmahovsky wrote:
>> QML is not that resource hogging as JS. dont use JS and you'll be
>> fine
>>
>> On Tue, Oct 17, 2017 at 8:11 PM, Roland Hughes
>> <roland at logikalsolutions.com
>> <mailto:roland at logikalsolutions.com>> wrote:
>>
>>
>>
>> On 10/17/2017 12:54 PM, interest-request at qt-project.org
>> <mailto:interest-request at qt-project.org> wrote:
>>> On ter?a-feira, 17 de outubro de 2017 08:11:13 PDT Roland
>>> Hughes wrote:
>>>>> The bug tracking system is under our control - it will not just
>>>>> disappear (from our perspective).
>>>> Oh yes it will!
>>>>
>>>> Speaking as someone who has heard that soooooo many times before, let's
>>>> just count a few for Qt shall we.
>>>>
>>>> The Trolltech bug database was never going to just disappear (from our
>>>> perspective). It did. A tiny fraction of the bugs migrated to the new
>>>> system but most were mass exterminated with
>>> The TT TT was not a public database. It existed internally only. When we
>>> switched to a public bugtracker, we could only export some entries since many
>>> had confidential customer information. Those that were exported had to be
>>> review by a person to make sure we were not violation any NDAs or
>>> confidentiality.
>>>
>>> That's the same reason why the code repository starts with Qt 4.5, not earlier
>>> versions.
>>>
>>>> "The version this bug is reported against is no longer supported..."
>>>>
>>>> The Nokia bug tracker was never going to just disappear (from our
>>>> perspective). It did. Few, if any of the older bugs made it into the
>>>> current database. Most were mass exterminated with
>>> There was no Nokia database. We switched straight from the internal tdb
>>> (that's what it was called) to JIRA.
>> There was a Nokia bug base as well, at least for a while. I
>> and others entered bugs into it back in the day. Your
>> argument also re-enforces a great many bugs "simply disappeared."
>>>> I hear from quite a few companies in similar boats. They started
>>>> development for a medical/industrial device which had a lengthy
>>>> testing/approval process, filed bug reports for that version only to see
>>>> them rot or fall victim to a mass extermination.
>>> Most open source projects don't support old versions, since they don't have
>>> the manpower to do so.
>>>
>>>> The current owners of Qt and the current OpenSource maintainers don't
>>>> offer or seem to understand the concept of an LTS (Long Term Support)
>>>> version. They are constantly pursuing script kiddies and that worthless
>>>> QML instead of maintaining the base which built them. This will soon
>>>> force a fork in the OpenSource project. One which rips out all of the
>>>> QML and focuses on nothing but bug fixes for 12 years. Yes, 12 years.
>>> Again, offence taken.
>> Take all of the offense you want. Medical devices and
>> industrial controls need LTS versions, not resource hogging
>> QML features. Qt's chasing of the idiot phone market which
>> has 6 months at best life spans is alienating and chasing
>> away the very industries which made Qt successful.
>>> I don't know who plans on forking. There's no such division in the community,
>>> so any attempt to do so will probably start with very few developers. Almost
>>> certainly, fewer than critical mass to maintain the codebase.
>>>
>>> See TQt (Trinity Project) for an example of a fork attempt.
>> It's easy to fork something you have been maintaining
>> internally for years. There _IS_ such a division. You don't
>> know about it because they don't come here. They justifiably
>> believe they've been abandoned. The relentless pursuit of
>> "new cool features" to please the phone crowd is causing the
>> much larger medical device and industrial control industries
>> to create their own LTS.
>>
>> How many questions have you seen on here over the past 18
>> months about Qt 3? That project Harmman (sp?) calls about
>> periodically sells north of a million units per year and the
>> company is maintaining Qt 3 on its own so they can make minor
>> product enhancements which don't have to go though multi-year
>> clinical trials. They aren't the only calls I get about
>> products using Qt 3, 4.2, and the most likely soon to be
>> orphaned (if not already) 4.8. Every company I am contacted
>> about using earlier versions has their own staff maintaining
>> the code base today. They have had no other choice. If
>> anything, joining forces with someone who is not a competitor
>> but using the same tool set will lighten their load.
>>
>> --
>> Roland Hughes, President
>> Logikal Solutions
>> (630)-205-1593 <tel:%28630%29%20205-1593>
>>
>> http://www.theminimumyouneedtoknow.com
>> <http://www.theminimumyouneedtoknow.com>
>> http://www.infiniteexposure.net <http://www.infiniteexposure.net>
>> http://www.johnsmith-book.com
>> http://www.logikalblog.com
>> http://www.interestingauthors.com/blog
>> <http://www.interestingauthors.com/blog>
>> http://lesedi.us/
>> http://onedollarcontentstore.com
>> <http://onedollarcontentstore.com>
>>
>>
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>>
>>
>>
>> --
>> Best regards,
>> Vlad
>
> --
> Roland Hughes, President
> Logikal Solutions
> (630)-205-1593 <tel:%28630%29%20205-1593>
>
> http://www.theminimumyouneedtoknow.com
> <http://www.theminimumyouneedtoknow.com>
> http://www.infiniteexposure.net <http://www.infiniteexposure.net>
> http://www.johnsmith-book.com
> http://www.logikalblog.com
> http://www.interestingauthors.com/blog
> <http://www.interestingauthors.com/blog>
> http://lesedi.us/
> http://onedollarcontentstore.com <http://onedollarcontentstore.com>
>
>
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>
--
Roland Hughes, President
Logikal Solutions
(630)-205-1593
http://www.theminimumyouneedtoknow.com
http://www.infiniteexposure.net
http://www.johnsmith-book.com
http://www.logikalblog.com
http://www.interestingauthors.com/blog
http://lesedi.us/
http://onedollarcontentstore.com
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