We have elasticsearch instance in development server. Facing extremely slow search fetch times and we want to know what we can do to make it fast.
# of records: 22000
Size of index: 980MB (< 1Gb)
Each document has 20-30 fields and 22k docs in total.
.
Use docvalues for all output fields.
Query has size =25,000 takes 6-8 seconds.
Query size=1000, runs faster.
output fields = 6-8 fields are returned (none is nested). All are docvalues.
.
Total query time using curl command: 6-7 seconds to fetch all 22k document with output fields as posted above. We need all 22k documents hence size = 25k
.
Profiled the query time:
Search query time: 2 ms (milli seconds) YES
All time is fetch time.
.
Heapsize = 12gb
Machine has 32gb memory. Enough of free memory left.
swap size = 4gb (none utilized)
.
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