On 2017-02-10 06:33:30 +0000, Huan Ruan wrote: > > > > > > Could you give a bit more detail abou thtis one - it indeed looks like > > different profile, but it's hard to nail down without more lines... > > > > > First screen of unexpanded output: > > … > > + 94.84% 0.00% postgres postgres > [.] ExecMakeTableFunctionResult > + 94.84% 0.00% postgres postgres > [.] pg_logical_slot_get_changes_guts > + 94.80% 0.00% postgres postgres > [.] LogicalDecodingProcessRecord > + 94.45% 0.03% postgres postgres > [.] ReorderBufferCommit > + 94.19% 0.01% postgres postgres > [.] ReorderBufferCleanupTXN > + 94.11% 0.01% postgres postgres > [.] ReorderBufferReturnChange > + 94.08% 93.40% postgres postgres > [.] AllocSetFree > > + 2.33% 0.00% perf [kernel.kallsyms] > [k] system_call_fastpathOk, so this is likely a known issue. If you're in the position to try, there's a set of patches to address this:http://archives.postgresql.org/message-id/20ca0c69-e8c3-cb50-4456-f03908c672ec%402ndquadrant.com Andres
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