在 Gremlin 控制台上显示时间答案

【问题标题】：Show time on Gremlin Console在 Gremlin 控制台上显示时间
【发布时间】：2018-08-31 01:46:04
【问题描述】：

我正在尝试测量 Gremlin 控制台中的查询所花费的时间。是否可以在每个 gremlin 提示符下显示时间？类似于“SET TIME ON”过去如何与 Oracle 的 SQL 控制台一起使用。

【问题讨论】：

【解决方案1】：

没有任何东西可以显示每次提示执行的时间。您当然可以使用profile() 和explain() 步骤对遍历进行计时并获取有关其内部执行情况的信息：

gremlin> g.V().out().profile()
==>Traversal Metrics
Step                                                               Count  Traversers       Time (ms)    % Dur
=============================================================================================================
TinkerGraphStep(vertex,[])                                             6           6          12.308    88.82
VertexStep(OUT,vertex)                                                 6           6           1.268     9.15
NoOpBarrierStep(2500)                                                  6           4           0.281     2.03
                                            >TOTAL                     -           -          13.857        -
gremlin> g.V().out().explain()
==>Traversal Explanation
=======================================================================================
Original Traversal                 [GraphStep(vertex,[]), VertexStep(OUT,vertex)]

ConnectiveStrategy           [D]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
IncidentToAdjacentStrategy   [O]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
MatchPredicateStrategy       [O]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
FilterRankingStrategy        [O]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
InlineFilterStrategy         [O]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
AdjacentToIncidentStrategy   [O]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
RepeatUnrollStrategy         [O]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
CountStrategy                [O]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
PathRetractionStrategy       [O]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
LazyBarrierStrategy          [O]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
TinkerGraphCountStrategy     [P]   [GraphStep(vertex,[]), VertexStep(OUT,vertex)]
TinkerGraphStepStrategy      [P]   [TinkerGraphStep(vertex,[]), VertexStep(OUT,vertex)]
ProfileStrategy              [F]   [TinkerGraphStep(vertex,[]), VertexStep(OUT,vertex)]
StandardVerificationStrategy [V]   [TinkerGraphStep(vertex,[]), VertexStep(OUT,vertex)]

Final Traversal                    [TinkerGraphStep(vertex,[]), VertexStep(OUT,vertex)]

【讨论】：