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Change default -blocks-storage.tsdb.series-hash-cache-max-size-bytes from 1GB to 350MB #6130

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pracucci
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What this PR does

When we introduced the series hash cache, we initially set the default -blocks-storage.tsdb.series-hash-cache-max-size-bytes setting to a random number (1GB). In this PR I propose to upstream a config change we recently did at Grafana Labs and change the default setting to 350MB, which is enouch to store the hashes for all series queried from an ingester, assuming the 13h TSDB retention (default) and up to 2M in-memory series in the ingester.

Which issue(s) this PR fixes or relates to

N/A

Checklist

  • Tests updated
  • Documentation added
  • CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]

…from 1GB to 350MB

Signed-off-by: Marco Pracucci <marco@pracucci.com>
@pracucci pracucci marked this pull request as ready for review September 25, 2023 15:05
@pracucci pracucci requested review from a team as code owners September 25, 2023 15:05
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@treid314 treid314 left a comment

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LGTM!

@pracucci pracucci merged commit 5275545 into main Sep 25, 2023
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@pracucci pracucci deleted the change-blocks-storage.tsdb.series-hash-cache-max-size-bytes branch September 25, 2023 17:03
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2 participants