Re: Performance comparison between Pgsql 10.5 and Pgsql 11.2 - Mailing list pgsql-general

Nicola Contu <nicola.contu@gmail.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