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From "Rudenko, Artur" <>
Subject Possible performance issue in my environment setup
Date Tue, 11 Feb 2020 11:17:05 GMT
I'm am currently investigating a performance issue in our environment (20M large PARENT documents
and 800M nested small CHILD documents). The system inserts about 400K PARENT documents and
16M CHILD documents per day.
This is a solr cloud 8.3 environment with 7 servers (64 VCPU 128 GB RAM each, 24GB allocated
to Solr) with single collection (32 shards and replication factor 2).

Solr config related info :



I found in the solr log the following log line:

[2020-02-10T00:01:00.522] INFO [qtp1686100174-100525]
Opening [Searcher@37c9205b[0_shard29_replica_n112] realtime]

>From a log with 100K records, the above log record appears 65K times.

We are experiencing extremely slow query time while the indexing time is fast and sufficient.

Is this a possible direction to keep investigating? If so, any advices?

Artur Rudenko

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