Re: Sudden connection and load average spikes with postgresql 9.3

Josh Berkus <josh@agliodbs.com> wrote:
> On 07/02/2015 08:41 AM, eudald_v wrote:

>> And this is how it looks like when the spike happens:
>> [system CPU staying over 90%]

> I think you have a driver, kernel, Linux memory management, or IO
> stack issue.

In my experience this is usually caused by failure to disable
transparent huge page support.  The larger shared_buffers is
configured, the bigger the problem.

--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company