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feat: add cpu_usage_millicores and memory_usage_bytes in information_schema.cluster_info table. #7051

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feat: add cpu_usage_millicores and memory_usage_bytes in information_schema.cluster_info table. #7051

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@zyy17 zyy17 commented Oct 3, 2025 •
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I hereby agree to the terms of the GreptimeDB CLA.

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What's changed and what's your intention?

Wait for GreptimeTeam/greptime-proto#284.

Add cpu_usage_millicores and memory_usage_bytes in information_schema.cluster_info table:

mysql> select peer_hostname, total_cpu_millicores, cpu_usage_millicores, total_memory_bytes, memory_usage_bytes from information_schema.cluster_info;
+-------------------------------------+----------------------+----------------------+--------------------+--------------------+
| peer_hostname                       | total_cpu_millicores | cpu_usage_millicores | total_memory_bytes | memory_usage_bytes |
+-------------------------------------+----------------------+----------------------+--------------------+--------------------+
| mycluster-meta-54bd44bd94-g8dzm     |                 1000 |                    0 |         1073741824 |           28368896 |
| mycluster-meta-54bd44bd94-pkrvx     |                 1000 |                    2 |         1073741824 |           31895552 |
| mycluster-datanode-0                |                 1000 |                    1 |         1073741824 |           34570240 |
| mycluster-datanode-1                |                 1000 |                    1 |         1073741824 |           38170624 |
| mycluster-datanode-2                |                 1000 |                    1 |         1073741824 |           37085184 |
| mycluster-frontend-6c5d4bcf78-m7jtx |                 1000 |                    1 |         1073741824 |           45465600 |
| mycluster-flownode-0                |                 1000 |                    1 |         1073741824 |           43786240 |
+-------------------------------------+----------------------+----------------------+--------------------+--------------------+
7 rows in set (0.00 sec)

With this information, we can easily calculate the total resource usage and may use it to make other decisions about whether to run the high-resource-intensive operation or not.

For now, it only works for a containerized environment.

PR Checklist

Please convert it to a draft if some of the following conditions are not met.

  • I have written the necessary rustdoc comments.
  • I have added the necessary unit tests and integration tests.
  • This PR requires documentation updates.
  • API changes are backward compatible.
  • Schema or data changes are backward compatible.

zyy17 and others added 4 commits October 3, 2025 00:09
@zyy17
refactor: add hostname in cluster_info table
354ebd4 
Signed-off-by: zyy17 <[email protected]>
@zyy17
chore: update information schema result
ccc0549 
Signed-off-by: zyy17 <[email protected]>
@evenyag @zyy17
feat: enable zstd for bulk memtable encoded parts (GreptimeTeam#7045)
4792afb 
feat: enable zstd in bulk memtable

Signed-off-by: evenyag <[email protected]>
@zyy17
refactor: add get_total_cpu_millicores() / get_total_cpu_cores() …
524a4bc 
…/ `get_total_memory_bytes()` / `get_total_memory_readable()` in common-stat

Signed-off-by: zyy17 <[email protected]>
@github-actions github-actions bot added size/M docs-not-required This change does not impact docs. breaking-change This pull request contains breaking changes. labels Oct 3, 2025
@zyy17 zyy17 force-pushed the feat/report-node-usage branch 3 times, most recently from fc11f81 to 9cb8633 Compare October 4, 2025 06:21
@zyy17
feat: add cpu_usage_millicores and memory_usage_bytes in `informa…
bfbebb8 
…tion_schema.cluster_info` table

Signed-off-by: zyy17 <[email protected]>
@zyy17 zyy17 force-pushed the feat/report-node-usage branch from 9cb8633 to bfbebb8 Compare October 4, 2025 06:35
@zyy17 zyy17 changed the title feat!: add cpu_usage_millicores and memory_usage_bytes in information_schema.cluster_info table. feat: add cpu_usage_millicores and memory_usage_bytes in information_schema.cluster_info table. Oct 17, 2025
@zyy17 zyy17 removed the breaking-change This pull request contains breaking changes. label Oct 17, 2025
@zyy17 zyy17 force-pushed the feat/report-node-usage branch from 8628422 to 472b85c Compare October 17, 2025 14:55
@zyy17 zyy17 marked this pull request as ready for review October 17, 2025 15:42
@zyy17 zyy17 requested review from WenyXu, evenyag and fengjiachun and removed request for a team and zhongzc October 17, 2025 15:42
@zyy17 zyy17 force-pushed the feat/report-node-usage branch from 472b85c to 5ab40a9 Compare October 17, 2025 15:57
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@waynexia waynexia Awaiting requested review from waynexia waynexia is a code owner

@MichaelScofield MichaelScofield Awaiting requested review from MichaelScofield MichaelScofield is a code owner

@fengjiachun fengjiachun Awaiting requested review from fengjiachun

@WenyXu WenyXu Awaiting requested review from WenyXu

@evenyag evenyag Awaiting requested review from evenyag

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