From: | David Fetter <david(at)fetter(dot)org> |
---|---|
To: | pgsql-hackers(at)lists(dot)postgresql(dot)org |
Subject: | Re: Efficient output for integer types |
Date: | 2019-09-18 06:26:35 |
Message-ID: | 20190918062635.GZ31596@fetter.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
On Wed, Sep 18, 2019 at 07:51:42AM +0200, David Fetter wrote:
> On Wed, Sep 18, 2019 at 05:42:01AM +0200, David Fetter wrote:
> > On Tue, Sep 17, 2019 at 09:01:57AM +0200, David Fetter wrote:
> > > On Tue, Sep 17, 2019 at 08:55:05AM +0200, David Fetter wrote:
> > > > On Sun, Sep 15, 2019 at 09:18:49AM +0200, David Fetter wrote:
> > > > > Folks,
> > > > >
> > > > > Please find attached a couple of patches intended to $subject.
> > > > >
> > > > > This patch set cut the time to copy ten million rows of randomly sized
> > > > > int8s (10 of them) by about a third, so at least for that case, it's
> > > > > pretty decent.
> > > >
> > > > Added int4 output, removed the sprintf stuff, as it didn't seem to
> > > > help in any cases I was testing.
> > >
> > > Found a couple of "whiles" that should have been "ifs."
> >
> > Factored out some inefficient functions and made the guts use the more
> > efficient function.
>
> Fix copy-paste-o that introduced some unneeded 64-bit math.
Removed static annotation that shouldn't have been present.
Best,
David.
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778
Remember to vote!
Consider donating to Postgres: http://www.postgresql.org/about/donate
Attachment | Content-Type | Size |
---|---|---|
v6-0001-Make-int4-and-int8-operations-more-efficent.patch | text/x-diff | 14.4 KB |
From | Date | Subject | |
---|---|---|---|
Next Message | Amit Langote | 2019-09-18 06:46:12 | Re: pgbench - allow to create partitioned tables |
Previous Message | Amit Langote | 2019-09-18 06:11:11 | Re: Creating partitions automatically at least on HASH? |