Custom Query (301 matches)

Certain file operations (like populating a file dialog from a directory containing a lot of files or expiring a QNetworkDiskCache) take *AGES*. Especially when the underlying file system doesn't have good caching capabilities.

The following code:

    QDirIterator it("some_path");

    while (it.hasNext()) {
        QString path = it.next();
    }

takes on a directory (HPFS) containing 3800 files about 50 seconds (!) to complete, while an opendir/readdir - loop finishes in 2..3 secs. On JFS the performance is better, but not great as well.

Investigating...

gui/dialogs/qprintdialog_unix.cpp, line 763:

We must append a trailing slash to "cur" if not already there on OS/2 as well.

I found that QFileDialog behaves really slow (gives 100% CPU load) if you enter a directory containing 100+ files.