Vertica running in nice mode
Moderator: NorbertKrupa
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Vertica running in nice mode
I have just setup a Vertica Prod environment. When we populate this database from the ETL, we notice that "Vertica" is running in Nice mode i.e other processes will run in before Vertica. Is this a Vertica setting ?. Or is it something from the ETL.
Re: Vertica running in nice mode
Vertica internally runs most of its threads at a lower priority (higher nice value)
Specifically, Vertica runs its query executor threads with a slightly lower priority than its main communications dispatch loop (note that without being root, a process can not increase the priority of a thread). This is done so that heavy CPU load during query processing doesn't starve out distributed coordination messages.
Specifically, Vertica runs its query executor threads with a slightly lower priority than its main communications dispatch loop (note that without being root, a process can not increase the priority of a thread). This is done so that heavy CPU load during query processing doesn't starve out distributed coordination messages.
- JimKnicely
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Re: Vertica running in nice mode
I believe you can check the nice level in the /etc/security/limits.conf file...
Jim Knicely
Note: I work for Vertica. My views, opinions, and thoughts expressed here do not represent those of my employer.
Note: I work for Vertica. My views, opinions, and thoughts expressed here do not represent those of my employer.