Re: Wait free LW_SHARED acquisition - v0.2 - Mailing list pgsql-hackers

From Peter Geoghegan
Subject Re: Wait free LW_SHARED acquisition - v0.2
Date
Msg-id CAM3SWZQxPrQE+_Jk=n_czpeP991g5x7LuwMUp1jhtT-J+rT54w@mail.gmail.com
Whole thread Raw
In response to Re: Wait free LW_SHARED acquisition - v0.2  (Andres Freund <andres@2ndquadrant.com>)
Responses Re: Wait free LW_SHARED acquisition - v0.2  (Andres Freund <andres@2ndquadrant.com>)
List pgsql-hackers
On Sat, Feb 1, 2014 at 4:57 AM, Andres Freund <andres@2ndquadrant.com> wrote:
>> I'm looking at alternative options, because this is not terribly
>> helpful. With those big caveats in mind, consider the results of the
>> benchmark, which show the patch performing somewhat worse than the
>> master baseline at higher client counts:
>
> I think that's actually something else. I'd tried to make some
> definitions simpler, and that has, at least for the machine I have
> occasional access to, pessimized things. I can't always run the tests
> there, so I hadn't noticed before the repost.

I should have been clearer on one point: The pre-rebased patch (actual
patch series) [1] was applied on top of a commit from around the same
period, in order to work around the bit rot. However, I tested the
most recent revision from your git remote on the AWS instance.

[1] http://www.postgresql.org/message-id/20131115194725.GG5489@awork2.anarazel.de
-- 
Peter Geoghegan



pgsql-hackers by date:

Previous
From: Andres Freund
Date:
Subject: Re: [9.3 bug] disk space in pg_xlog increases during archive recovery
Next
From: Andres Freund
Date:
Subject: Re: Wait free LW_SHARED acquisition - v0.2