Implementation of new system metrics provider (Procfs)#10544
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If I remember correctly, NETLINK is not working in Sandbox.
It means that there are perfect conditions to add a test for this PR.
(just check that some metrics has non-zero value)
with the idea behind CurrentThread static methods
alexey-milovidov
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May 1, 2020
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Changelog category (leave one):
Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
(Only Linux) Clickhouse server now tries to fallback to ProcfsMetricsProvider when clickhouse binary is not attributed with CAP_NET_ADMIN capability to collect per-query system metrics (for CPU and I/O)
Detailed description / Documentation draft:
Several system metrics are now collected, provided that procfs is supported and enabled on the system:
This PR resolves #8787