diff options
| author | Joe Gordon <jogo@cloudscaling.com> | 2012-06-21 16:41:17 -0700 |
|---|---|---|
| committer | Joe Gordon <jogo@cloudscaling.com> | 2012-06-21 17:49:16 -0700 |
| commit | 1b40708287808243be27b83791b7d23f8b51b194 (patch) | |
| tree | 9406d98103551219d2e0b35b98bd5d99c384f4ec /doc/source | |
| parent | 3252371afca71f57c171569676d5de70439d5384 (diff) | |
| download | nova-1b40708287808243be27b83791b7d23f8b51b194.tar.gz nova-1b40708287808243be27b83791b7d23f8b51b194.tar.xz nova-1b40708287808243be27b83791b7d23f8b51b194.zip | |
Fixes ram_allocation_ratio based over subscription
Fix for bug 1016273
Change-Id: I7f7b227e71e93b4bcded150791fb0b9e9df98e4c
Diffstat (limited to 'doc/source')
| -rw-r--r-- | doc/source/devref/filter_scheduler.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/source/devref/filter_scheduler.rst b/doc/source/devref/filter_scheduler.rst index 5ae5bcd4e..91cf0e5a0 100644 --- a/doc/source/devref/filter_scheduler.rst +++ b/doc/source/devref/filter_scheduler.rst @@ -62,7 +62,9 @@ code. For example class |RamFilter| has the next realization: instance_type = filter_properties.get('instance_type') requested_ram = instance_type['memory_mb'] free_ram_mb = host_state.free_ram_mb - return free_ram_mb * FLAGS.ram_allocation_ratio >= requested_ram + total_usable_ram_mb = host_state.total_usable_ram_mb + used_ram_mb = total_usable_ram_mb - free_ram_mb + return total_usable_ram_mb * FLAGS.ram_allocation_ratio - used_ram_mb >= requested_ram Here `ram_allocation_ratio` means the virtual RAM to physical RAM allocation ratio (it is 1.5 by default). Really, nice and simple. |