yanglimingcn opened a new pull request, #3331:
URL: https://github.com/apache/brpc/pull/3331
Previously --cpu_set accepted a single CPU list (e.g. "0-3,5,7") that was
applied uniformly to all bthread worker threads regardless of their bthread_tag.
This change extends the flag to accept a per-tag format:
--cpu_set="0:0-3,5,7;1:6-9,4"
where each semicolon-separated segment is "<tag>:<cpu-list>". Tags not
mentioned in the string get no CPU binding. The legacy single-list format
continues to work unchanged and binds all tags to the same set.
Implementation:
- Replace _cpus (vector<unsigned>) with _tag_cpus
(vector<vector<unsigned>>), sized to FLAGS_task_group_ntags in the constructor.
- Add parse_one_cpuset() (static helper) for the existing range-list parsing
logic; parse_cpuset() now dispatches between legacy and per-tag formats based
on the presence of ':' or ';'.
- worker_thread() looks up _tag_cpus[tag] and round-robins over the per-tag
CPU list using the global _next_worker_id counter.
### What problem does this PR solve?
Issue Number: resolve
Problem Summary:
### What is changed and the side effects?
Changed:
Side effects:
- Performance effects:
- Breaking backward compatibility:
---
### Check List:
- Please make sure your changes are compilable.
- When providing us with a new feature, it is best to add related tests.
- Please follow [Contributor Covenant Code of
Conduct](https://github.com/apache/brpc/blob/master/CODE_OF_CONDUCT.md).
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