On Sun, Nov 7, 2010 at 4:13 PM, Greg Smith g...@2ndquadrant.com wrote:
Jeff Janes wrote:
Assuming the ordering is useful, the only way the OS can do as good a
job as the checkpoint code can, is if the OS stores the entire
checkpoint worth of data as dirty blocks and doesn't start writing
Jeff Janes wrote:
Assuming the ordering is useful, the only way the OS can do as good a
job as the checkpoint code can, is if the OS stores the entire
checkpoint worth of data as dirty blocks and doesn't start writing
until an fsync comes in. This strikes me as a pathologically
configured
On Fri, Oct 29, 2010 at 6:17 AM, Robert Haas robertmh...@gmail.com wrote:
On Fri, Oct 29, 2010 at 2:58 AM, Itagaki Takahiro
itagaki.takah...@gmail.com wrote:
On Fri, Oct 29, 2010 at 3:23 PM, Heikki Linnakangas
heikki.linnakan...@enterprisedb.com wrote:
Simon's argument in the thread that the
On Sat, Nov 6, 2010 at 7:25 PM, Jeff Janes jeff.ja...@gmail.com wrote:
There are really two separate things here:
(1) trying to do all the writes to file A before you start doing
writes to file B, and
(2) trying to write out blocks to each file in ascending logical block
number order
I'm
On 29.10.2010 06:00, Jeff Janes wrote:
One of the items on the Wiki ToDo list is sorted writes for
checkpoints. The consensus seemed to be that this should be done by
adding hook(s) into the main code, and then a contrib module to work
with those hooks. Is there an existing contrib module that
On Fri, Oct 29, 2010 at 3:23 PM, Heikki Linnakangas
heikki.linnakan...@enterprisedb.com wrote:
Simon's argument in the thread that the todo item points to
(http://archives.postgresql.org/pgsql-patches/2008-07/msg00123.php) is
basically that we don't know what the best algorithm is yet and
On Fri, Oct 29, 2010 at 2:58 AM, Itagaki Takahiro
itagaki.takah...@gmail.com wrote:
On Fri, Oct 29, 2010 at 3:23 PM, Heikki Linnakangas
heikki.linnakan...@enterprisedb.com wrote:
Simon's argument in the thread that the todo item points to
Heikki Linnakangas heikki.linnakan...@enterprisedb.com writes:
Simon's argument in the thread that the todo item points to
(http://archives.postgresql.org/pgsql-patches/2008-07/msg00123.php) is
basically that we don't know what the best algorithm is yet and
benchmarking is a lot of work, so
Itagaki Takahiro wrote:
When I submitted the patch, I tested it on disk-based RAID-5 machine:
http://archives.postgresql.org/pgsql-hackers/2007-06/msg00541.php
But there were no additional benchmarking reports at that time. We still
need benchmarking before we re-examine the feature. For
One of the items on the Wiki ToDo list is sorted writes for
checkpoints. The consensus seemed to be that this should be done by
adding hook(s) into the main code, and then a contrib module to work
with those hooks. Is there an existing contrib module that one could
best look to for inspiration
Excerpts from Jeff Janes's message of vie oct 29 00:00:24 -0300 2010:
One of the items on the Wiki ToDo list is sorted writes for
checkpoints. The consensus seemed to be that this should be done by
adding hook(s) into the main code, and then a contrib module to work
with those hooks. Is
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