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Re: Performance comparison between Pgsql 10.5 and Pgsql 11.2

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Nicola Contu <nicola.contu@xxxxxxxxx> 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




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