# Snapshot performance

**URL:** <https://forum.opensearch.org/t/snapshot-performance/27798>\
**Category:** OpenSearch\
**Tags:** troubleshoot, configure\
**Created:** [February 2, 2026, 7:21pm UTC](https://forum.opensearch.org/t/snapshot-performance/27798 "2026-02-02T19:21:47Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![doug\_f](https://avatars.discourse-cdn.com/v4/letter/d/3ab097/32.png) [@doug\_f](https://forum.opensearch.org/u/doug_f)\
**Post date:** [February 2, 2026, 7:21pm UTC](https://forum.opensearch.org/t/snapshot-performance/27798/1 "2026-02-02T19:21:47Z")

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**Versions** (OpenSearch/Dashboard/Server OS/Browser):

- OpenSearch v3.3.0
- RedHat/Docker

**Describe the issue** :

Each node at most sends 40mb/s to S3 snapshot repository. Is there a way to increase or configure this? Snapshots are taking far longer than I believe they should.

**Configuration** :

Most settings are defaults.

indices.recovery.max\_bytes\_per\_sec: 4gb

**Relevant Logs or Screenshots** :

JVM metrics show heap at ~50%

CPU is at ~20%

The Thread pool for snapshots seems to be maxed at 5. Some nodes have 100+ queued jobs.

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**Author:** ![pablo](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.opensearch.org/pablo/32/10363_2.png) [@pablo](https://forum.opensearch.org/u/pablo)\
**Post date:** [February 12, 2026, 5:03pm UTC](https://forum.opensearch.org/t/snapshot-performance/27798/2 "2026-02-12T17:03:20Z")

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@doug_f According to OpenSearch documentation, 40 MB/s is the default snapshot speed.

```auto
max_snapshot_bytes_per_sec

```

> **[s3 repository - Register snapshot repository](https://docs.opensearch.org/latest/api-reference/snapshots/create-repository/?utm_source=chatgpt.com#s3-repository)**
>
> Registering Or Updating A Snapshot Repository API Introduced 1.0

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<div class="post-metadata">

**Author:** ![matijasever55](https://avatars.discourse-cdn.com/v4/letter/m/ba8739/32.png) [@matijasever55](https://forum.opensearch.org/u/matijasever55)\
**Post date:** [February 15, 2026, 4:44am UTC](https://forum.opensearch.org/t/snapshot-performance/27798/3 "2026-02-15T04:44:47Z")

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Yes, the default is very conservative (40mb). You should be able to bump this up significantly (e.g., to 100mb or 200mb) by updating the repository settings. Just keep an eye on your search latency when the snapshots are running at higher speeds.

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**Author:** ![doug\_f](https://avatars.discourse-cdn.com/v4/letter/d/3ab097/32.png) [@doug\_f](https://forum.opensearch.org/u/doug_f)\
**Post date:** [February 26, 2026, 5:53pm UTC](https://forum.opensearch.org/t/snapshot-performance/27798/4 "2026-02-26T17:53:55Z")

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Thank you didn’t realize there was a setting on the repository. I thought the index settings would be the ones to take effect.