Re: src/port/snprintf.c: Optimize the common base=10 case in fmtint - Mailing list pgsql-hackers

From Arjan van de Ven
Subject Re: src/port/snprintf.c: Optimize the common base=10 case in fmtint
Date
Msg-id 384aac2e-84e9-4aea-395b-67c95f6dda08@linux.intel.com
Whole thread Raw
In response to Re: src/port/snprintf.c: Optimize the common base=10 case in fmtint  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
On 10/26/2021 10:51 AM, Tom Lane wrote:
> Mark Dilger <mark.dilger@enterprisedb.com> writes:
>> It appears fmtint only has three options for base, being 10, 16, and 8.  Have you profiled with either of the others
specialcased as well?  I don't see much use in optimizing for octal, but hexadecimal is used quite a bit in wal with
patternslike "%08X%08X%08X".
 
> 
> I'd be inclined to just hard-wire the three allowed cases, and not have
> an arbitrary-divisor code path at all.
> 

ok so feedback is "Yes please but we want more of it" :)

I'll go poke at making an updated patch that does 8/10/16 and nothing else.





pgsql-hackers by date:

Previous
From: Andres Freund
Date:
Subject: changes in pgport etc doesn't cause client programs to be relinked
Next
From: Andres Freund
Date:
Subject: Re: changes in pgport etc doesn't cause client programs to be relinked