Postgres v10 on Debian stretch I’m suffering from an occasionally very slow system. A few weeks ago someone mentioned using perf. I’ve installed this and caught the system during a slow period. It shows the following as the top cpu users: 9.09% postgres [.] ReorderBufferGetTupleBuf 6.14% postgres [.] ReorderBufferReturnChange When ReorderBufferReturnChange is no longer running: 14.35% postgres [.] ReorderBufferGetTupleBuf Can someone shed some light on this and advise how to prevent it reoccurring? Cheers, Martin.
