On quinta-feira, 3 de janeiro de 2013 23.25.54, Nikos Chantziaras wrote: > > That has nothing to do with it. Unbuffered mode means that QFile will not > > buffer (and will not use buffered stdio either). Instead, it will use > > directly the low-level POSIX API like open(2) and write(2). > > > > The OS may still buffer. > > In synchronous mode? I assume that the usual "cp -a this /mnt/there" is > a good test for this. In synchronous mode, the files are written out > immediately.
Synchronous mode is what makes the OS write immediately to disk after write(2). As I said, that's got nothing to do with Unbuffered mode. Since the buffer is just 16 kB, it will not make things faster or slower in a file copy. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center
signature.asc
Description: This is a digitally signed message part.
_______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
