AT
Apache TinkerPopDinh Phu

Out edge of vertex is slow

When i run this below query: "g.V().has("guid", "6203620951906330066").limit(10).out("matching").profile().toSet()" And I see step "JanusGraphVertexStep(OUT,[matching],vertex)" take a lot of time. Is there any way to solve this?

query.txt

S
spmallette•394d ago
could someone from @janusgraph have a look at this one please?
B
Bo•394d ago
@Dinh Phu Do you have query.batch set to true?
DP
Dinh Phu•394d ago
Yes Yes
B
Bo•394d ago
It does not seem so. If it's enabled, you should see JanusGraphMultiQueryStep in the profile result
DP
Dinh Phu•394d ago
i' sorry, i'm wrong. It query.batch default is false and i don't change it
B
Bo•394d ago
No worries! It's by default enabled since 1.0 but if you're using an older version (0.6 or prior versions), then it's by default disabled. Try enabling it - you should be able to see some performance improvement
DP
Dinh Phu•394d ago
no different after I enable it

query.txt

B
Bo•393d ago
You will see difference if you change limit(10) to limit(100) or more query.batch basically executes the out("matching") step in parallel. The latency still depends on the longest query. From the original profiler output, it seems it takes significantly more time for some vertices than the others. What's your hardware setup? Is your backend storage geo distributed?
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