I'm doing more investigation and this problem (with me) might be directly related to jfs.
With xfs mounted (2 days non-stop): 10 be/4 root 0.00 B 466.57 M 0.00 % 0.03 % [sync_supers] 948 be/4 root 788.00 K 133.77 M 0.00 % 0.01 % [jfsCommit] With xfs umounted (about 18 hours): 10 be/4 root 0.00 B 189.60 M 0.00 % 0.01 % [sync_supers] 948 be/4 root 20.00 K 38.88 M 0.00 % 0.01 % [jfsCommit] I think I can achieve more accurated results with 'time iotop -oPa'. I'll try again with jfs umounted to see. Also I'm collecting more data from friends (uname -a, time iotop -oPa, mount, all together). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/607560 Title: jbd2 writing block every 5 - 10 seconds, preventing disk spin-down and making noise -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
