Philipp Shergalis created IGNITE-23502:
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Summary: Long (100-300ms) read lock inserting a value under high
load in aipersist
Key: IGNITE-23502
URL: https://issues.apache.org/jira/browse/IGNITE-23502
Project: Ignite
Issue Type: Improvement
Reporter: Philipp Shergalis
Under high load even inserting 1 value in aipersist we *sometimes* hold read
lock for 100-300ms
Can be reproduced running UpsertKvBenchmark on labs server, branch
i{{{}gnite-22835-phil{}}} on 3ab6379da866fc5afac336bca53a6f4731025638 commit
(just added some logging to branch ignite-22835-2)
There are 123 entries in log for cases when we hold a lock for more than 100
ms. Examples:
{code:java}
[2024-10-18T10:07:12,109][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-6][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 145 IN handleUpdate
[2024-10-18T10:07:12,518][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-12][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 123 IN handleUpdate
[2024-10-18T10:07:12,518][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-16][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 123 IN handleUpdate
[2024-10-18T10:07:12,518][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-1][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 121 IN handleUpdate
[2024-10-18T10:07:12,518][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-2][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 122 IN handleUpdate
Iteration 6: [2024-10-18T10:07:15,020][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-4][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 254 IN handleUpdate
[2024-10-18T10:07:15,020][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-10][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 254 IN handleUpdate
[2024-10-18T10:07:15,020][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-11][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 254 IN handleUpdate
[2024-10-18T10:07:15,020][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-14][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 254 IN handleUpdate
[2024-10-18T10:07:15,020][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-2][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 254 IN handleUpdate
[2024-10-18T10:07:15,020][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-8][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 254 IN handleUpdate
[2024-10-18T10:07:23,820][WARN
][org.apache.ignite.internal.benchmark.UpsertKvBenchmark.upsert-jmh-worker-5][PersistentPageMemoryMvPartitionStorage]
LONG READ LOCK 188 IN handleUpdate{code}
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