HAndres,
Well. For one you haven't proven that the changed setting actually
improves performance. So the comparison isn't really valid. We will
I agree that I haven't proven this yet, but that doesn't make it
invalid. Just unproven.
I agree that performance testing is necessary ... and the
On Sun, May 12, 2013 at 8:50 AM, Andres Freund and...@2ndquadrant.com wrote:
[ a response that I entirely agree with ]
+1 to all that.
It's maybe worth noting that it's probably fairly uncommon for vacuum
to read a page and not dirty it, because if the page is all-visible,
we won't read it.
On 2013-05-13 13:21:54 -0400, Robert Haas wrote:
On Sun, May 12, 2013 at 8:50 AM, Andres Freund and...@2ndquadrant.com wrote:
[ a response that I entirely agree with ]
+1 to all that.
It's maybe worth noting that it's probably fairly uncommon for vacuum
to read a page and not dirty it,
Hi Josh,
On 2013-05-11 16:28:32 -0700, Josh Berkus wrote:
That, and Tom's concern about forensics, which I understand to be the
larger sticking point.
I don't buy the idea that we should cause regular recurring performance
issues for all of our users in order to aid diagnosing the kind of
Robert, Andres,
That, and Tom's concern about forensics, which I understand to be the
larger sticking point.
I don't buy the idea that we should cause regular recurring performance
issues for all of our users in order to aid diagnosing the kind of
issues which happen 1% of the time to 2% of
On Mon, Mar 25, 2013 at 4:31 PM, Josh Berkus j...@agliodbs.com wrote:
In the past, setting vacuum_freeze_min_age (vfma) really low (say to
1 or 5) would have caused lots of extra writing work due to
dirtying extra pages for freezing. This has been our stated reason to
keep vfma high,
Hi,
On 2013-03-25 13:31:17 -0700, Josh Berkus wrote:
In the past, setting vacuum_freeze_min_age (vfma) really low (say to
1 or 5) would have caused lots of extra writing work due to
dirtying extra pages for freezing. This has been our stated reason to
keep vfma high, despite the
On 2013-05-09 12:09:04 -0400, Robert Haas wrote:
On Mon, Mar 25, 2013 at 4:31 PM, Josh Berkus j...@agliodbs.com wrote:
In the past, setting vacuum_freeze_min_age (vfma) really low (say to
1 or 5) would have caused lots of extra writing work due to
dirtying extra pages for freezing.
Folks,
In the past, setting vacuum_freeze_min_age (vfma) really low (say to
1 or 5) would have caused lots of extra writing work due to
dirtying extra pages for freezing. This has been our stated reason to
keep vfma high, despite the obvious advantage of freezing tuples while
they're
