I have some new information on this topic. I tried to bypass the problem by using a fast SSD, but the desktop responsiveness becomes horrible. I think it's because I get only a write throughput of 20MB/s on sequential write access on the block devices. After some research, I got some new information. The problem is caused because there is no fair scheduling between read and write access.
https://fcp.surfsite.org/modules/newbb/viewtopic.php?viewmode=thread&topic_id=52598&forum=10&post_id=247938 After some more tests. I got these results. # dd if=/dev/zero of=/dev/sda6 bs=1M count=1500 1572864000 Bytes (1,6 GB) kopiert, 57,5956 s, 27,3 MB/s And poor desktop responsiveness. # dd if=/dev/zero of=/dev/sda6 bs=1M count=1500 oflag=direct 1572864000 Bytes (1,6 GB) kopiert, 20,9958 s, 74,9 MB/s And even firefox does not freeze. -- Heavy Disk I/O harms desktop responsiveness https://bugs.launchpad.net/bugs/131094 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
