Обсуждение: AWS RDS "sessions" and pg_stat_activity
Just trying to get my head firmly around the RDS session number and associated performance/saturation. It says a session is any request waiting on a response from the server, so I am wondering if that's equivalent to selecting all from pg_stat_activity where state is active, and this would include all concurrent parallel workers, maintenance stuff, etc.
On Wed, Jun 21, 2023 at 12:06 PM Wells Oliver <wells.oliver@gmail.com> wrote:
Just trying to get my head firmly around the RDS session number and associated performance/saturation. It says a session is any request waiting on a response from the server, so I am wondering if that's equivalent to selecting all from pg_stat_activity where state is active, and this would include all concurrent parallel workers, maintenance stuff, etc.
If you are referring to something in the RDS documentation or monitoring, could you provide a link to it, or an excerpt of it?
Cheers,
Jeff
Their use of "sessions" is everywhere. AAS (average active session count) and all over the insights, including the activity bar. I'm just trying to map those back to exact things I can query myself from pg_stat_activity.
On Wed, Jun 21, 2023 at 9:29 AM Jeff Janes <jeff.janes@gmail.com> wrote:
On Wed, Jun 21, 2023 at 12:06 PM Wells Oliver <wells.oliver@gmail.com> wrote:Just trying to get my head firmly around the RDS session number and associated performance/saturation. It says a session is any request waiting on a response from the server, so I am wondering if that's equivalent to selecting all from pg_stat_activity where state is active, and this would include all concurrent parallel workers, maintenance stuff, etc.If you are referring to something in the RDS documentation or monitoring, could you provide a link to it, or an excerpt of it?Cheers,Jeff
Wells Oliver
wells.oliver@gmail.com
wells.oliver@gmail.com
session - connection to database
active session - session that has an SQL currently running
On Wed, Jun 21, 2023 at 9:33 AM Wells Oliver <wells.oliver@gmail.com> wrote:
Their use of "sessions" is everywhere. AAS (average active session count) and all over the insights, including the activity bar. I'm just trying to map those back to exact things I can query myself from pg_stat_activity.On Wed, Jun 21, 2023 at 9:29 AM Jeff Janes <jeff.janes@gmail.com> wrote:On Wed, Jun 21, 2023 at 12:06 PM Wells Oliver <wells.oliver@gmail.com> wrote:Just trying to get my head firmly around the RDS session number and associated performance/saturation. It says a session is any request waiting on a response from the server, so I am wondering if that's equivalent to selecting all from pg_stat_activity where state is active, and this would include all concurrent parallel workers, maintenance stuff, etc.If you are referring to something in the RDS documentation or monitoring, could you provide a link to it, or an excerpt of it?Cheers,Jeff--Wells Oliver
wells.oliver@gmail.com
Didn't click your link so missed you were talking about my blog post.
I appreciate your interest in my blog post about Active Sessions, a topic I've devoted two decades to exploring. I rarely document my thoughts, but I recently put together the following post in a single evening. I acknowledge it could benefit from further refinement, so your feedback would be invaluable. If there are any aspects you believe need more elaboration or clarity, please don't hesitate to let me know.
I appreciate your interest in my blog post about Active Sessions, a topic I've devoted two decades to exploring. I rarely document my thoughts, but I recently put together the following post in a single evening. I acknowledge it could benefit from further refinement, so your feedback would be invaluable. If there are any aspects you believe need more elaboration or clarity, please don't hesitate to let me know.
A Comprehensive Guide to Understanding the AAS Metric in Databases
On Wed, Jun 21, 2023 at 1:14 PM kyle Hailey <kylelf@gmail.com> wrote:
session - connection to databaseactive session - session that has an SQL currently runningOn Wed, Jun 21, 2023 at 9:33 AM Wells Oliver <wells.oliver@gmail.com> wrote:Their use of "sessions" is everywhere. AAS (average active session count) and all over the insights, including the activity bar. I'm just trying to map those back to exact things I can query myself from pg_stat_activity.On Wed, Jun 21, 2023 at 9:29 AM Jeff Janes <jeff.janes@gmail.com> wrote:On Wed, Jun 21, 2023 at 12:06 PM Wells Oliver <wells.oliver@gmail.com> wrote:Just trying to get my head firmly around the RDS session number and associated performance/saturation. It says a session is any request waiting on a response from the server, so I am wondering if that's equivalent to selecting all from pg_stat_activity where state is active, and this would include all concurrent parallel workers, maintenance stuff, etc.If you are referring to something in the RDS documentation or monitoring, could you provide a link to it, or an excerpt of it?Cheers,Jeff--Wells Oliver
wells.oliver@gmail.com