Reducing placement conflicts between concurrent virtual machine allocations

A system, comprising:

• one or more processors;
• memory in electronic communication with the one or more processors;
• instructions stored in the memory, the instructions being executable by the one or more processors to:
• maintain a placement store including a record of allocated computing resources on a plurality of computing nodes of a computing zone, the computing zone including a plurality of agent allocators configured to concurrently allocate resources in response to incoming placement requests in accordance with a placement policy applicable to each agent allocator of the plurality of agent allocators;
• determine, based on information from the record of allocated computing resources, that a number of placement conflicts between the plurality of agent allocators with respect to incoming placement requests is greater than or equal to a threshold number of placement conflicts for a predetermined period of time;
• based on determining that the number of placement conflicts is greater than or equal to the threshold number of placement conflicts, modify the placement policy applicable to each agent allocator of the plurality of agent allocators by decreasing one or more restrictions from the placement policy associated with allocating resources on the plurality of computing nodes of the computing zone;
• and
• cause the plurality of agent allocators to allocate resources on the plurality of computing nodes in accordance with the modified placement policy applicable to each agent allocator of the plurality of agent allocators.

A non-transitory computer readable medium storing instructions thereon that, when executed by at least one processor, causes the at least one processor to:

• maintain a placement store including a record of allocated computing resources on a plurality of computing nodes of a computing zone, the computing zone including a plurality of agent allocators configured to concurrently allocate resources in response to incoming placement requests in accordance with a placement policy applicable to each agent allocator of the plurality of agent allocators;
• determine, based on information from the record of allocated computing resources, that a number of placement conflicts between the plurality of agent allocators with respect to incoming placement requests is greater than or equal to a threshold number of placement conflicts for a predetermined period of time;
• and
• based on determining that the number of placement conflicts is greater than or equal to the threshold number of placement conflicts, modify the placement policy applicable to each agent allocator of the plurality of agent allocators by decreasing one or more restrictions from the placement policy associated with allocating resources on the plurality of computing nodes of the computing zone;
• and
• cause the plurality of agent allocators to allocate resources on the plurality of computing nodes in accordance with the modified placement policy applicable to each agent allocator of the plurality of agent allocators.