QtSerialPort and memory usage
-
Lifetime Qt Championwrote on 7 Oct 2015, 07:39 last edited by mrjj 10 Jul 2015, 07:42
works.
Still stable.
Do you have input on the serial ?
I will connect something that sends data. just to check.
How do you make it open console also ?
Here its just a process.
Update:
ignore last question. just saw its QDebug
Also, with input , I do see mem raising.
Testing more -
ok,
slowly from 12k to 17k. over time when it has input.
Also the pmc changes.
So yes. I see the same.
Will leave it running for some time to check if it stops. -
works.
Still stable.
Do you have input on the serial ?
I will connect something that sends data. just to check.
How do you make it open console also ?
Here its just a process.
Update:
ignore last question. just saw its QDebug
Also, with input , I do see mem raising.
Testing morewrote on 7 Oct 2015, 07:56 last edited byYes, I do have a microcontroller reading values and outputting to serial port
continuously.Actually, the application I created is a console application. The info is output
with QDebug additionally.Nevertheless, you can choose to output with console without QDebug too.
CONFIG += console
in the .pro file
Create a output stream in the actual code
QTextStream out(stdout);
and output whatever required
out << "Something" << endl;
-
Yes, I do have a microcontroller reading values and outputting to serial port
continuously.Actually, the application I created is a console application. The info is output
with QDebug additionally.Nevertheless, you can choose to output with console without QDebug too.
CONFIG += console
in the .pro file
Create a output stream in the actual code
QTextStream out(stdout);
and output whatever required
out << "Something" << endl;
@codeaway
Ok i killed it at 25K.
Since we just reading a char, it cant be in the us that leaks.I must agree it seems odd.
-
Can you please test same with the virtual com0com: http://sourceforge.net/projects/com0com/
A signed driver for x64: https://code.google.com/p/powersdr-iq/downloads/detail?name=setup_com0com_W7_x64_signed.exe&can=2&q= -
Can you please test same with the virtual com0com: http://sourceforge.net/projects/com0com/
A signed driver for x64: https://code.google.com/p/powersdr-iq/downloads/detail?name=setup_com0com_W7_x64_signed.exe&can=2&q= -
Can you please test same with the virtual com0com: http://sourceforge.net/projects/com0com/
A signed driver for x64: https://code.google.com/p/powersdr-iq/downloads/detail?name=setup_com0com_W7_x64_signed.exe&can=2&q=@kuzulis
just as a virtual port or as a loop ? -
How should I configure com0com ?
Just create a pair with the "use port class" and "eneble buffer overrun" (via setupg.exe ui)
just as a virtual port or as a loop ?
as a two virtual ports. . e.g. COM1 as receiver for qserialport and COM2 as sender for other software (e.g. I have used Termite app to send).
UPD:
Yes, I too can reproduce this memory leak..
-
How should I configure com0com ?
Just create a pair with the "use port class" and "eneble buffer overrun" (via setupg.exe ui)
just as a virtual port or as a loop ?
as a two virtual ports. . e.g. COM1 as receiver for qserialport and COM2 as sender for other software (e.g. I have used Termite app to send).
UPD:
Yes, I too can reproduce this memory leak..
wrote on 7 Oct 2015, 13:43 last edited byYeah, reproduced it with com0com and termite.
Attached link to screencaphttp://postimg.org/image/mku4ege29/
After a detailed analysis, it looks as though all QtSerialPort examples
also face this issue. -
Yeah, reproduced it with com0com and termite.
Attached link to screencaphttp://postimg.org/image/mku4ege29/
After a detailed analysis, it looks as though all QtSerialPort examples
also face this issue.@codeaway
Yep got ever increasing mem use also with com0com.
If time permits I try the examples too. -
Probably it is a bug of QWinOverlappedIoNotifier : https://bugreports.qt.io/browse/QTBUG-48653
Let's wait for more info about..
17/18