Memory increase shardly after deleting chunk files

Grafana Loki
,
1

Loki Version : 2.5.0
Situation:
Memory increase shardly after deleting chunk files

  • Found many chunk files lay in my disk
  • delete chunks which was expired
  • I run the shell file

folder_path=“/home/loki/chunks”
date_before=“2023-11-01 00:00:00”
pattern=“Zm*”
file_list=$(find “$folder_path” -name “$pattern” -not -newermt “$date_before”)
for file in $file_list; do
rm -rf $file
done

  • chunks file were deleted, and I could query loki fiirstly
  • cuple minutes later, kubectl drop down for out of CPU resource

1707288723674
17072887236741231×522 35.3 KB

  • At about 14:26:00, I run the shell and chunks files were deleted successfully. And there was a peak about my CPU resource.
  • At about 14:30:00, I test loki, and make some request for Loki, Loki could query firstly.
  • At about 14:45:00, Loki was down for out of 100% CPU.

I want to know that what made Loki request so much resource about CPU, was the index in Loki cache?

2

My kubectl cluster restarted and everything was right after that.
I want to know what Loki do after I deleted chunks files

3

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