| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | pgsql-hackers(at)lists(dot)postgresql(dot)org, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>, Alexander Kuzmenkov <a(dot)kuzmenkov(at)postgrespro(dot)ru> |
| Subject: | Re: Performance improvements for src/port/snprintf.c |
| Date: | 2018-10-03 17:40:03 |
| Message-ID: | 2435.1538588403@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2018-10-03 13:31:09 -0400, Tom Lane wrote:
>> I do not see the point of messing with snprintf.c here. I doubt that
>> strfromd is faster than the existing sprintf call (because the latter
>> can use ".*" instead of serializing and deserializing the precision).
> I'm confused, the numbers I posted clearly show that it's faster?
Those were in the context of whether float8out went through snprintf.c
or directly to strfromd, no?
regards, tom lane
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