Re: Performance comparison between Pgsql 10.5 and Pgsql 11.2

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От Tom Lane
Тема Re: Performance comparison between Pgsql 10.5 and Pgsql 11.2
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Msg-id 32290.1551709348@sss.pgh.pa.us
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Ответ на Re: Performance comparison between Pgsql 10.5 and Pgsql 11.2  (Nicola Contu <nicola.contu@gmail.com>)
Ответы Re: Performance comparison between Pgsql 10.5 and Pgsql 11.2  (Nicola Contu <nicola.contu@gmail.com>)
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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

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