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matthewdalematthewdale
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GODRIVER-1825 Select the server with fewer in-use connections.
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20 files changed

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lines changed

‎data/server-selection/in_window/equilibrium.json

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{
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"description": "When in equilibrium selection is evenly distributed",
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"topology_description": {
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"type": "Sharded",
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"servers": [
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{
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"address": "a:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "b:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "c:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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}
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]
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},
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"mocked_topology_state": [
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{
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"address": "a:27017",
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"operation_count": 5
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},
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{
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"address": "b:27017",
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"operation_count": 5
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},
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{
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"address": "c:27017",
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"operation_count": 5
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}
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],
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"iterations": 2000,
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"outcome": {
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"tolerance": 0.05,
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"expected_frequencies": {
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"a:27017": 0.33,
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"b:27017": 0.33,
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"c:27017": 0.33
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}
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}
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}

‎data/server-selection/in_window/equilibrium.yml

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description: When in equilibrium selection is evenly distributed
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topology_description:
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type: Sharded
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servers:
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- address: a:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: b:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: c:27017
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avg_rtt_ms: 35
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type: Mongos
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mocked_topology_state:
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- address: a:27017
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operation_count: 5
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- address: b:27017
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operation_count: 5
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- address: c:27017
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operation_count: 5
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iterations: 2000
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outcome:
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tolerance: 0.05
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expected_frequencies:
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a:27017: 0.33
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b:27017: 0.33
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c:27017: 0.33

‎data/server-selection/in_window/many-choices.json

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{
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"description": "Selections from many choices occur at correct frequencies",
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"topology_description": {
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"type": "Sharded",
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"servers": [
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{
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"address": "a:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "b:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "c:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "d:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "e:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "f:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "g:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "h:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "i:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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}
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]
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},
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"mocked_topology_state": [
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{
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"address": "a:27017",
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"operation_count": 0
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},
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{
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"address": "b:27017",
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"operation_count": 5
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},
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{
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"address": "c:27017",
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"operation_count": 5
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},
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{
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"address": "d:27017",
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"operation_count": 10
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},
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{
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"address": "e:27017",
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"operation_count": 10
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},
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{
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"address": "f:27017",
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"operation_count": 20
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},
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{
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"address": "g:27017",
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"operation_count": 20
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},
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{
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"address": "h:27017",
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"operation_count": 50
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},
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{
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"address": "i:27017",
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"operation_count": 60
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}
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],
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"iterations": 10000,
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"outcome": {
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"tolerance": 0.03,
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"expected_frequencies": {
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"a:27017": 0.22,
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"b:27017": 0.18,
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"c:27017": 0.18,
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"d:27017": 0.125,
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"e:27017": 0.125,
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"f:27017": 0.074,
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"g:27017": 0.074,
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"h:27017": 0.0277,
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"i:27017": 0
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}
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}
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}

‎data/server-selection/in_window/many-choices.yml

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description: Selections from many choices occur at correct frequencies
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topology_description:
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type: Sharded
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servers:
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- address: a:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: b:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: c:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: d:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: e:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: f:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: g:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: h:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: i:27017
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avg_rtt_ms: 35
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type: Mongos
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mocked_topology_state:
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- address: a:27017
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operation_count: 0
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- address: b:27017
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operation_count: 5
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- address: c:27017
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operation_count: 5
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- address: d:27017
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operation_count: 10
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- address: e:27017
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operation_count: 10
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- address: f:27017
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operation_count: 20
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- address: g:27017
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operation_count: 20
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- address: h:27017
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operation_count: 50
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- address: i:27017
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operation_count: 60
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iterations: 10000
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outcome:
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tolerance: 0.03
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expected_frequencies:
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a:27017: 0.22
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b:27017: 0.18
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c:27017: 0.18
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d:27017: 0.125
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e:27017: 0.125
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f:27017: 0.074
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g:27017: 0.074
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h:27017: 0.0277
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i:27017: 0

‎data/server-selection/in_window/one-least-two-tied.json

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{
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"description": "Least operations gets most selections, two tied share the rest",
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"topology_description": {
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"type": "Sharded",
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"servers": [
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{
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"address": "a:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "b:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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},
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{
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"address": "c:27017",
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"avg_rtt_ms": 35,
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"type": "Mongos"
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}
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]
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},
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"mocked_topology_state": [
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{
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"address": "a:27017",
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"operation_count": 16
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},
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{
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"address": "b:27017",
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"operation_count": 10
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},
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{
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"address": "c:27017",
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"operation_count": 16
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}
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],
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"iterations": 2000,
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"outcome": {
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"tolerance": 0.05,
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"expected_frequencies": {
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"a:27017": 0.165,
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"b:27017": 0.66,
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"c:27017": 0.165
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}
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}
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}

‎data/server-selection/in_window/one-least-two-tied.yml

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description: Least operations gets most selections, two tied share the rest
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topology_description:
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type: Sharded
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servers:
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- address: a:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: b:27017
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avg_rtt_ms: 35
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type: Mongos
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- address: c:27017
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avg_rtt_ms: 35
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type: Mongos
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mocked_topology_state:
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- address: a:27017
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operation_count: 16
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- address: b:27017
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operation_count: 10
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- address: c:27017
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operation_count: 16
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iterations: 2000
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outcome:
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tolerance: 0.05
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expected_frequencies:
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a:27017: 0.165
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b:27017: 0.66
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c:27017: 0.165

‎data/server-selection/in_window/rs-equilibrium.json

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{
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"description": "When in equilibrium selection is evenly distributed (replica set)",
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"topology_description": {
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"type": "ReplicaSetWithPrimary",
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"servers": [
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{
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"address": "a:27017",
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"avg_rtt_ms": 35,
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"type": "RSPrimary"
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},
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{
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"address": "b:27017",
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"avg_rtt_ms": 35,
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"type": "RSSecondary"
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},
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{
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"address": "c:27017",
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"avg_rtt_ms": 35,
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"type": "RSSecondary"
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}
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]
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},
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"mocked_topology_state": [
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{
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"address": "a:27017",
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"operation_count": 6
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},
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{
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"address": "b:27017",
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"operation_count": 6
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},
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{
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"address": "c:27017",
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"operation_count": 6
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}
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],
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"iterations": 2000,
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"outcome": {
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"tolerance": 0.05,
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"expected_frequencies": {
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"a:27017": 0.33,
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"b:27017": 0.33,
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"c:27017": 0.33
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}
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}
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}

‎data/server-selection/in_window/rs-equilibrium.yml

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description: When in equilibrium selection is evenly distributed (replica set)
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topology_description:
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type: ReplicaSetWithPrimary
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servers:
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- address: a:27017
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avg_rtt_ms: 35
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type: RSPrimary
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- address: b:27017
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avg_rtt_ms: 35
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type: RSSecondary
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- address: c:27017
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avg_rtt_ms: 35
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type: RSSecondary
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mocked_topology_state:
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- address: a:27017
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operation_count: 6
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- address: b:27017
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operation_count: 6
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- address: c:27017
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operation_count: 6
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iterations: 2000
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outcome:
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tolerance: 0.05
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expected_frequencies:
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a:27017: 0.33
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b:27017: 0.33
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c:27017: 0.33

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