1 which tools are you using to create a VM, and how. I am using Virtual Box, adding a New VM, I give it a name, OS Type: linux + ubuntu, memory 2048 MB, startup disk, Create a new hard disk, vdi (virtualbox disk image), *fixed size*, location default, Size 30 GB, and then create. After a few moments (when it starts to actually write to disk) windows start to fade and become unresponsive (firefox, for instance).
2. how fast is your HDD? use the following and run 3 times, please supply the results to the bug. * sudo hdparm -t /dev/sda 12:17:48 gema-pc:~ 22 % sudo hdparm -t /dev/sda [sudo] password for gema: /dev/sda: Timing buffered disk reads: 292 MB in 3.01 seconds = 96.96 MB/sec 12:21:34 gema-pc:~ % sudo hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 332 MB in 3.02 seconds = 110.02 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -t /dev/sda 12:21:45 gema-pc:~ 134 % sudo hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 330 MB in 3.01 seconds = 109.53 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -t /dev/sda * sudo hdparm -T /dev/sda 12:21:57 gema-pc:~ 134 % sudo hdparm -T /dev/sda /dev/sda: Timing cached reads: 17924 MB in 2.00 seconds = 8971.27 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -T /dev/sda 7.69s=0.14s+1.86s 12:22:39 gema-pc:~ 134 % sudo hdparm -T /dev/sda /dev/sda: Timing cached reads: 18294 MB in 2.00 seconds = 9156.27 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -T /dev/sda 7.78s=0.12s+1.90s 12:22:51 gema-pc:~ 134 % sudo hdparm -T /dev/sda /dev/sda: Timing cached reads: 18472 MB in 2.00 seconds = 9245.14 MB/sec sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed. zsh: abort sudo hdparm -T /dev/sda 7.24s=0.16s+1.86s I wasn't sure if you'd be interested in the errors, so I copied the whole output 3. Please run: vmstat 1 > vmstat.log attached vmstat.log after 5 mins of freeze, the machine came back again. I wrote the vmstat.log to a different drive, just to be sure. ** Attachment added: "vmstat.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+attachment/3104713/+files/vmstat.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/988799 Title: Precise freezes under heavy i/o To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/988799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
