[jira] [Created] (TS-3477) Determine thread affinity defaults automatically based on hwloc

["Sudheer Vinukonda (JIRA)" <ji...@apache.org>]

Sudheer Vinukonda created TS-3477:
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             Summary: Determine thread affinity defaults automatically based on hwloc
                 Key: TS-3477
                 URL: https://issues.apache.org/jira/browse/TS-3477
             Project: Traffic Server
          Issue Type: Improvement
          Components: Configuration
            Reporter: Sudheer Vinukonda


{{proxy.config.exec_thread.affinity}} allows to configure the thread affinity depending on the system configuration.

https://docs.trafficserver.apache.org/en/latest/reference/configuration/records.config.en.html#proxy-config-exec-thread-affinity

It would be nice if ATS can default automatically to the appropriate setting based on the configuration from hwloc to reduce unnecessary complexity for an end user configuring ATS.

~zwoop suggests to default to {{2 - assign threads to sockets}}, if there's more than one NUMA node and {{0 - assign threads to machine}}, if not.
 
{code}
zwoop
8:38 if you have more than one NUMA node, probably default to 2, otherwise, default to 0
{code}




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