Horton

Re: Spread checkpoint sync

Greg Smith <greg@2ndquadrant.com>

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From: Greg Smith <greg@2ndquadrant.com>
To: Michael Banck <mbanck@debian.org>
Cc: Robert Haas <robertmhaas@gmail.com>, pgsql-hackers@postgresql.org
Date: 2011-02-04T18:43:23Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Add new buffers_backend_fsync field to pg_stat_bgwriter.

Michael Banck wrote:
> On Sat, Jan 15, 2011 at 05:47:24AM -0500, Greg Smith wrote:
>   
>> For example, the pre-release Squeeze numbers we're seeing are awful so
>> far, but it's not really done yet either. 
>>     
>
> Unfortunately, it does not look like Debian squeeze will change any more
> (or has changed much since your post) at this point, except for maybe
> further stable kernel updates.  
>
> Which file system did you see those awful numbers on and could you maybe
> go into some more detail?
>   

Once the release comes out any day now I'll see if I can duplicate them 
on hardware I can talk about fully, and share the ZCAV graphs if it's 
still there.  The server I've been running all of the extended pgbench 
tests in this thread on is running Ubuntu simply as a temporary way to 
get 2.6.32 before Squeeze ships.  Last time I tried installing one of 
the Squeeze betas I didn't get anywhere; hoping the installer bug I ran 
into has been sorted when I try again.

-- 
Greg Smith   2ndQuadrant US    greg@2ndQuadrant.com   Baltimore, MD
PostgreSQL Training, Services, and 24x7 Support  www.2ndQuadrant.us
"PostgreSQL 9.0 High Performance": http://www.2ndQuadrant.com/books