Re: [Interest] QJsonObject memory leak?

[Nuno Santos]

Elvis, The test follows attached. Best, Nuno

<<attachment: test-qjsonobject.zip>>

On 2 Nov 2023, at 16:28, Elvis Stansvik <elvst...@gmail.com> wrote: Can you create a standalone example? (I see no calls to your create/uncreate) How are you measuring memory consumption? Elvis Den tors 2 nov. 2023 16:52Nuno Santos <nuno.san...@imaginando.pt> skrev: Hi, I have realised that I cannot release all the memory allocated by a huge QJsonObject when I don’t need it any more. To ensure that nothing else was in between I have created a simple program that does what is below. Conclusion: - Running on a Mac, compiled in release with Qt 6.5.3 - Starts with 31.7 MB - Goes up to 412.5 MB - After calling uncreate drops to 42.7 If I repeat this procedure, it always increases the process memory size although it is not linear. In iOS the problem is even worse. Any ideas of what is happening here? Thank you! Best regards, Nuno QString GetRandomString() {     const QString possibleCharacters("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");     const int randomStringLength = 4096; // assuming you want random strings of 12 characters          QString randomString;     for(int i=0; i<randomStringLength; ++i)     {         int index = QRandomGenerator::global()->generate() % possibleCharacters.length();         QChar nextChar = possibleCharacters.at(index);         randomString.append(nextChar);     }          return randomString; } void Controller::create() {     qDebug() << Q_FUNC_INFO;     for (int i=0; i<100000; i++)         _data[QString::number(i)] = GetRandomString(); } void Controller::uncreate() {     qDebug() << Q_FUNC_INFO;     _data = QJsonObject(); } _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest <Screenshot 2023-11-02 at 15.48.43.png><Screenshot 2023-11-02 at 15.48.29.png><Screenshot 2023-11-02 at 15.48.50.png><Screenshot 2023-11-02 at 15.48.29.png><Screenshot 2023-11-02 at 15.48.29.png><Screenshot 2023-11-02 at 15.48.29.png>

_______________________________________________
Interest mailing list
Interest@qt-project.org
https://lists.qt-project.org/listinfo/interest