Nicola Contu <nicola(dot)contu(at)gmail(dot)com> writes:
> See attached perf report. The difference seems to be all in this line, but
> not sure :
> + 26.80% 0.00% 222 postmaster [kernel.kallsyms]
> [k] system_call_fastpath
That would suggest that many more kernel calls are happening, which is
something you could usefully investigate with strace, perhaps.
regards, tom lane