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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. |