Frameworks 

I am going to tell the story of fixing a very high priority bug that was 15 years old. Arguably the worst KIO bug. In September 2011, against KDE 4.7, someone opened bug 281270: "When copying files to a removable disk, speed and progress reflect copying to the local cache not to the disk itself". The report notes the copy notification showed about 50 MB/s to a USB 1.1 device, which cannot go faster than 12 Mbit/s. The reporter had asked a kernel developer, Alan Stern, what was going on, and summed up his answer: Read More

There is a bug in KDE's bug tracker that is almost as old as some of our contributors: bug 342056, "Ridiculously slow file copy (multiple small files)", reported by Alexander Nestorov back in 2014. The report is blunt: copying a 15 GB folder of roughly 3 million small files took 5 to 10 hours in KDE, versus about 20 minutes with rsync. One commenter summed up the mood: Read More