Question
Default elevator/scheduler set to cfq?
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×Sorry to bump such an old thread, but I’m not sure where I should go to set the scheduler. Is the correct device vda
?
If so, I see none
set as the scheduler (I’m running an Ubuntu 14.04 64-bit VM).
$ cat /sys/block/vda/queue/scheduler
none
If not, where do I set/change the scheduler? It’s not obvious from the available devices on my VM:
$ ls -l /sys/block/
total 0
lrwxrwxrwx 1 root root 0 Apr 16 11:51 loop0 -> ../devices/virtual/block/loop0
lrwxrwxrwx 1 root root 0 Apr 16 11:51 loop1 -> ../devices/virtual/block/loop1
lrwxrwxrwx 1 root root 0 Apr 16 11:51 loop2 -> ../devices/virtual/block/loop2
lrwxrwxrwx 1 root root 0 Apr 16 11:51 loop3 -> ../devices/virtual/block/loop3
lrwxrwxrwx 1 root root 0 Apr 16 11:51 loop4 -> ../devices/virtual/block/loop4
lrwxrwxrwx 1 root root 0 Apr 16 11:51 loop5 -> ../devices/virtual/block/loop5
lrwxrwxrwx 1 root root 0 Apr 16 11:51 loop6 -> ../devices/virtual/block/loop6
lrwxrwxrwx 1 root root 0 Apr 16 11:51 loop7 -> ../devices/virtual/block/loop7
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram0 -> ../devices/virtual/block/ram0
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram1 -> ../devices/virtual/block/ram1
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram10 -> ../devices/virtual/block/ram10
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram11 -> ../devices/virtual/block/ram11
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram12 -> ../devices/virtual/block/ram12
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram13 -> ../devices/virtual/block/ram13
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram14 -> ../devices/virtual/block/ram14
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram15 -> ../devices/virtual/block/ram15
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram2 -> ../devices/virtual/block/ram2
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram3 -> ../devices/virtual/block/ram3
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram4 -> ../devices/virtual/block/ram4
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram5 -> ../devices/virtual/block/ram5
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram6 -> ../devices/virtual/block/ram6
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram7 -> ../devices/virtual/block/ram7
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram8 -> ../devices/virtual/block/ram8
lrwxrwxrwx 1 root root 0 Apr 16 11:51 ram9 -> ../devices/virtual/block/ram9
lrwxrwxrwx 1 root root 0 Apr 16 11:50 vda -> ../devices/pci0000:00/0000:00:05.0/virtio2/block/vda
Thanks!