Ivan Artiukhov created IGNITE-20818:
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Summary: High periodic latency spikes on long put-get benchmark
Key: IGNITE-20818
URL: https://issues.apache.org/jira/browse/IGNITE-20818
Project: Ignite
Issue Type: Bug
Components: persistence
Reporter: Ivan Artiukhov
Attachments: kv-get.png, kv-put.png
AI3, rev. c15f14f4ddca7d6e9ab3e02d5a661e68d6e9ee21
Benchmark parameters:
* 1 server node
* aipersist storage engine, 25 partitions (default), raft.fsync=false
Benchmark code:
[https://github.com/gridgain/YCSB/blob/ycsb-2023.7/ignite3/src/main/java/site/ycsb/db/ignite3/IgniteClient.java]
Benchmark parameters:
* 100% put of 25 million unique entries, 1 thread
* then 100% get of 25 million entries, 1 thread
"put" throughput:
!kv-put.png!
"get" throughput:
!kv-get.png!
On the graphs we see the performance drop which happen every 5 minutes which
begins after ~50 minutes since the start of the test. Then after ~4 hours and
20 minutes the periodic drops stopped to appear.
Timings:
{noformat}
12:11 -- puts start
13:01 -- first spike
15:46 -- puts end
15:47 -- gets start
16:31 -- spikes ended
18:27 -- gets end{noformat}
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