Please find attached log files generated by the sql-test2.py script attached above.
These were generated while running "dd if=/dev/zero of=- bs=1M count=50000 | dd if=- of=myfile bs=1M count=50000" On the hardware described at the start of the bug with the deadline scheduler active. You can see where the timing of the sql update command goes from around 3-400 millionths of a second to taking a minute plus on a few occasions, ** Attachment added: "log1" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1064521/+attachment/3394540/+files/logfile_10_46_11_10_2012.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1064521 Title: Kernel I/O scheduling writes starving reads, local DoS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1064521/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
