Re: [ADMIN] cpu hight sy% usage

"downey.deng@postgresdata.com" <downey.deng@postgresdata.com> writes:
> i have PostgreSQL 9.5.3 server running on redhalt 6.6
> when i run one query  with pgbench the cpu is 80% and sy% is 60%

If you were to provide a self-contained test case, people might take
some interest in this ... but nobody is going to spend time guessing
at all the details you didn't supply.

https://www.postgresql.org/docs/current/static/bug-reporting.html
https://wiki.postgresql.org/wiki/Slow_Query_Questions

            regards, tom lane