On 19/01/12 17:39, Greg Smith wrote:
On 1/19/12 1:10 PM, Robert Haas wrote:
I have to say that I find that intensely counterintuitive. The
current settings are not entirely easy to tune correctly, but at least
they're easy to explain.
If there's anyone out there who has run a larger
On Sun, Jan 22, 2012 at 8:42 PM, Robert Haas robertmh...@gmail.com wrote:
On Sun, Jan 22, 2012 at 3:20 PM, Daniel Farina dan...@heroku.com wrote:
A few anecdotes does not constitute evidence, but it does look like
some people pay attention to any additional versioning foothold they
can get.
On Mon, Jan 23, 2012 at 4:58 PM, Simon Riggs si...@2ndquadrant.com wrote:
On Mon, Jan 16, 2012 at 12:45 PM, Fujii Masao masao.fu...@gmail.com wrote:
Please add the Apply mode.
OK, will do.
Done. Attached is the updated version of the patch.
I notice that the Apply mode isn't fully
* Ants Aasma:
I had a run in with this. JDBC driver versions 9.0 with the default
configuration resulted in silent data corruption. The fix was easy, but not
having an useful error was what really bothered me.
Same for the DBD::Pg driver.
In this particular case, I knew that the change was
On Mon, Jan 23, 2012 at 9:02 AM, Fujii Masao masao.fu...@gmail.com wrote:
On Mon, Jan 23, 2012 at 4:58 PM, Simon Riggs si...@2ndquadrant.com wrote:
On Mon, Jan 16, 2012 at 12:45 PM, Fujii Masao masao.fu...@gmail.com wrote:
Please add the Apply mode.
OK, will do.
Done. Attached is the
On Sat, Jan 21, 2012 at 9:20 AM, Dimitri Fontaine
dimi...@2ndquadrant.fr wrote:
Hi,
Thank you for reviewing this patch!
Hitoshi Harada umi.tan...@gmail.com writes:
The patch applies with one reject, which I could fix easily. The make
check passed.
Bitrot happens fast in this season… will
Hitoshi Harada umi.tan...@gmail.com writes:
pg_extension_feature_index UNIQUE, btree (extoid, extfeature)
Do you mean you want UNIQUE constraint by this index? I found the
usage is to search feature by (only) its name, so I wondered if extoid
is not necessary.
I guess you're right and
On Mon, Jan 23, 2012 at 6:28 PM, Simon Riggs si...@2ndquadrant.com wrote:
On Mon, Jan 23, 2012 at 9:02 AM, Fujii Masao masao.fu...@gmail.com wrote:
On Mon, Jan 23, 2012 at 4:58 PM, Simon Riggs si...@2ndquadrant.com wrote:
On Mon, Jan 16, 2012 at 12:45 PM, Fujii Masao masao.fu...@gmail.com
Hi,
Any ideas on this?
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To make
On Fri, Jan 20, 2012 at 11:34 PM, Simon Riggs si...@2ndquadrant.com wrote:
On Fri, Jan 20, 2012 at 12:54 PM, Fujii Masao masao.fu...@gmail.com wrote:
Thanks for the review!
On Fri, Jan 20, 2012 at 8:15 PM, Simon Riggs si...@2ndquadrant.com wrote:
I'm looking at this patch and wondering why
Is it such a bad idea to store the literal text of the extension's
pieces (control file and corresponding SQL program) in catalogs? I'm
not sure if I understand why everyone is so interested in a special
interaction with the file system in some way. By the same token,
extensions can be
Tom Lane t...@sss.pgh.pa.us writes:
On reflection it seems like this patch is simply offering the wrong
solution for the problem. I agree that it could be useful to install
extensions without having direct access to the server's filesystem,
but it doesn't seem to follow that we must
Dear pgdevs,
I've just completed the final version of a survey of database schema quality in
open source software. The survey covers 512 projects which use MySQL and/or
PostgreSQL for storing their data. Automatic analyses are performed by querying
the information schema. Statistical
Le 23 janvier 2012 11:53, Dimitri Fontaine dimi...@2ndquadrant.fr a écrit :
Tom Lane t...@sss.pgh.pa.us writes:
On reflection it seems like this patch is simply offering the wrong
solution for the problem. I agree that it could be useful to install
extensions without having direct access to
On Mon, Jan 23, 2012 at 2:00 AM, Dimitri Fontaine
dimi...@2ndquadrant.fr wrote:
Hitoshi Harada umi.tan...@gmail.com writes:
- What happens if DROP EXTENSION ... CASCADE? Does it work?
It should, what happens when you try? :)
I just tried DROP EXTENSION now, and found it broken :(
db1=#
On Sat, Jan 21, 2012 at 1:52 PM, Marc Mamin m.ma...@intershop.de wrote:
c. Refine error handling of dblink.c. I think it preserves the
previous behavior for column number mismatch and type
conversion exception.
Hello,
I don't know if this cover following issue.
I just mention it
On Thu, Jan 19, 2012 at 1:58 AM, Hitoshi Harada umi.tan...@gmail.com wrote:
On Wed, Jan 18, 2012 at 1:11 AM, Hitoshi Harada umi.tan...@gmail.com wrote:
On Sat, Jan 14, 2012 at 8:10 AM, Matthew Draper matt...@trebex.net wrote:
I just remembered to make time to advance this from WIP to proposed
On 2012-01-13 21:14, Frederico wrote:
Hi folks.
Is there any restriction in create and start threads inside Postgres?
I'm trying to develop a multithread planner, and some times is raised a
exception of access memory.
I'm debugging the code to see if is a bug in the planner, but until now, I
On Fri, Jan 20, 2012 at 7:50 PM, Fujii Masao masao.fu...@gmail.com wrote:
On Fri, Jan 20, 2012 at 7:38 PM, Simon Riggs si...@2ndquadrant.com wrote:
On Fri, Jan 20, 2012 at 3:43 AM, Fujii Masao masao.fu...@gmail.com wrote:
Requested update
Thanks! Will review.
In StartChildProcess(), the
On Mon, Jan 23, 2012 at 10:03 AM, Fujii Masao masao.fu...@gmail.com wrote:
To make the walreceiver call WaitLatchOrSocket(), we would need to
merge it and libpq_select() into one function. But the former is the backend
function and the latter is the frontend one. Now I have no good idea to
On Mon, Jan 23, 2012 at 5:53 AM, Dimitri Fontaine
dimi...@2ndquadrant.fr wrote:
Probably the worst issue with that is that in typical installations,
the share/extension/ directory would be read-only to the server, and a
lot of people might be uncomfortable with making it writable. Not sure
On Mon, Jan 23, 2012 at 12:23 PM, Fujii Masao masao.fu...@gmail.com wrote:
I've not reviewed the patch enough yet. Will review the patch tomorrow again.
Thanks very much. I'm sure that's enough to keep me busy a few days.
--
Simon Riggs http://www.2ndQuadrant.com/
On Mon, Jan 23, 2012 at 12:12 AM, Tom Lane t...@sss.pgh.pa.us wrote:
Robert Haas robertmh...@gmail.com writes:
On Sat, Jan 21, 2012 at 5:29 PM, Jim Nasby j...@nasby.net wrote:
We should also look at having the freelist do something useful, instead of
just dropping it completely. Unfortunately
On Mon, Jan 23, 2012 at 1:38 AM, Kohei KaiGai kai...@kaigai.gr.jp wrote:
What options are available to see rate of workloads of components
within a particular query?
I usually use oprofile, though I'm given to understand it's been
superseded by a new tool called perf. I haven't had a chance to
On Mon, Jan 23, 2012 at 10:29 AM, Fujii Masao masao.fu...@gmail.com wrote:
On Fri, Jan 20, 2012 at 11:34 PM, Simon Riggs si...@2ndquadrant.com wrote:
On Fri, Jan 20, 2012 at 12:54 PM, Fujii Masao masao.fu...@gmail.com wrote:
Thanks for the review!
On Fri, Jan 20, 2012 at 8:15 PM, Simon Riggs
On Mon, Jan 23, 2012 at 5:29 AM, Fujii Masao masao.fu...@gmail.com wrote:
If many people think the patch is not acceptable without such a safeguard,
I will do that right now.
That's my view. I think we ought to resolve this issue before commit,
especially since it seems unclear that we know
On Mon, Jan 23, 2012 at 8:11 AM, Robert Haas robertmh...@gmail.com wrote:
On Mon, Jan 23, 2012 at 5:29 AM, Fujii Masao masao.fu...@gmail.com wrote:
If many people think the patch is not acceptable without such a safeguard,
I will do that right now.
That's my view. I think we ought to resolve
On Mon, Jan 23, 2012 at 1:06 PM, Robert Haas robertmh...@gmail.com wrote:
It's pretty trivial to prove that there is a very serious problem with
BufFreelistLock. I'll admit I can't prove what the right fix is just
yet, and certainly measurement is warranted.
I agree there is a problem with
Robert Haas robertmh...@gmail.com writes:
virtual directory - e.g. CREATE TABLE pg_extension_virtualdir
(filename text, content text) which would be modifiable by the DBA and
would be searched either before or after the filesystem itself. This
catalog wouldn't be dumped by pg_dump, and there
On Sun, Jan 22, 2012 at 3:48 PM, Kohei KaiGai kai...@kaigai.gr.jp wrote:
I tried to implement a fdw module that is designed to utilize GPU
devices to execute
qualifiers of sequential-scan on foreign tables managed by this module.
It was named PG-Strom, and the following wikipage gives a
There was finally some time available on Nate Boley's server, which he
has been kind enough to make highly available for performance testing
throughout this cycle, and I got a chance to run some benchmarks
against a bunch of the perfomance-related patches in the current
CommitFest. Specifically,
On Mon, Jan 23, 2012 at 8:25 AM, Dimitri Fontaine
dimi...@2ndquadrant.fr wrote:
Robert Haas robertmh...@gmail.com writes:
virtual directory - e.g. CREATE TABLE pg_extension_virtualdir
(filename text, content text) which would be modifiable by the DBA and
would be searched either before or
On Mon, Jan 23, 2012 at 4:03 AM, Florian Weimer fwei...@bfk.de wrote:
* Ants Aasma:
I had a run in with this. JDBC driver versions 9.0 with the default
configuration resulted in silent data corruption. The fix was easy, but not
having an useful error was what really bothered me.
Same for
On Mon, Jan 23, 2012 at 1:53 PM, Robert Haas robertmh...@gmail.com wrote:
Results are the median of three five-minute test runs
checkpoint_timeout = 15min
Test duration is important for tests that don't relate to pure
contention reduction, which is every patch apart from XLogInsert.
We've
* Robert Haas:
In this particular case, I knew that the change was coming and could
push updated Java and Perl client libraries well before the server-side
change hit our internal repository, but I really don't want to have to
pay attention to such details.
But if we *don't* turn this on by
2012/1/23 Simon Riggs si...@2ndquadrant.com:
On Sun, Jan 22, 2012 at 3:48 PM, Kohei KaiGai kai...@kaigai.gr.jp wrote:
I tried to implement a fdw module that is designed to utilize GPU
devices to execute
qualifiers of sequential-scan on foreign tables managed by this module.
It was named
On Mon, Jan 23, 2012 at 2:49 PM, Kohei KaiGai kai...@kaigai.gr.jp wrote:
Also, the query you mention is probably the best performing query you
can come up with. It looks like a GIS query, yet isn't. Would it be
possible to run tests on the TPC-H suite and do a full comparison of
On Sun, Jan 22, 2012 at 11:47 PM, Mikko Tiihonen
mikko.tiiho...@nitorcreations.com wrote:
* introduced a new GUC variable array_output copying the current
bytea_output type, with values full (old value) and
smallfixed (new default)
* added documentation for the new GUC variable
If this
On Tue, Jan 3, 2012 at 7:49 PM, Pavel Stehule pavel.steh...@gmail.com wrote:
I change a patch and now ALTER TABLE, ALTER INDEX, ALTER SEQUENCE and
ALTER VIEW has IF EXISTS clause
Patch no longer applies. Pls update.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL
Robert Haas robertmh...@gmail.com writes:
I am pretty concerned that we find a design that does not involve
pg_dump needing to dump out the extension contents, though: that seems
to me to be missing the point of having extensions in the first place.
I was just trying to explain where I'm
On Mon, Jan 23, 2012 at 9:31 AM, Simon Riggs si...@2ndquadrant.com wrote:
Test duration is important for tests that don't relate to pure
contention reduction, which is every patch apart from XLogInsert.
Yes, I know. I already said that I was working on more tests to
address other use cases.
On Tue, Jan 3, 2012 at 2:49 PM, Pavel Stehule pavel.steh...@gmail.com wrote:
jup, we can continue in enhancing step by step.
I change a patch and now ALTER TABLE, ALTER INDEX, ALTER SEQUENCE and
ALTER VIEW has IF EXISTS clause
ALTER FOREIGN TABLE should be parallel as well, I think.
--
On Mon, Jan 23, 2012 at 10:04 AM, Dimitri Fontaine
dimi...@2ndquadrant.fr wrote:
And then basebackup and pg_upgrade would just work, and for dump and
restore we still need to find something not violating the POLA.
I think that would mean offering a backend function that list all files
from a
Robert Haas robertmh...@gmail.com writes:
Hmm. But CREATE EXTENSION / ALTER EXTENSION doesn't seem right,
because the files in the directory correspond to *available*
extensions, not already-created ones. We need some way of dumping and
I would have limited the dump query to only known
On Mon, Jan 23, 2012 at 9:36 AM, Florian Weimer fwei...@bfk.de wrote:
* Robert Haas:
In this particular case, I knew that the change was coming and could
push updated Java and Perl client libraries well before the server-side
change hit our internal repository, but I really don't want to have
On Mon, Jan 23, 2012 at 10:26 AM, Dimitri Fontaine
dimi...@2ndquadrant.fr wrote:
Robert Haas robertmh...@gmail.com writes:
Hmm. But CREATE EXTENSION / ALTER EXTENSION doesn't seem right,
because the files in the directory correspond to *available*
extensions, not already-created ones. We
On Mon, Jan 23, 2012 at 3:09 PM, Robert Haas robertmh...@gmail.com wrote:
I'm working on it.
Good, thanks for the update.
The remaining patch you tested was withdrawn and not submitted to the CF.
Oh. Which one was that? I thought all of these were in play.
freelist_ok was a prototype
Robert Haas robertmh...@gmail.com writes:
Hmm, I don't think I like that design. I think we should view this as
a way to embed the SQL and control files needed by the extension in
the server, rather than a separate thing called an inline extension.
If pg_dump is going to dump those files, it
On Mon, Jan 23, 2012 at 10:35 AM, Simon Riggs si...@2ndquadrant.com wrote:
freelist_ok was a prototype for testing/discussion, which contained an
arguable heuristic. I guess that means its also in play, but I
wasn't thinking we'd be able to assemble clear evidence for 9.2.
OK, that one is
On Mon, Jan 23, 2012 at 10:46 AM, Dimitri Fontaine
dimi...@2ndquadrant.fr wrote:
Robert Haas robertmh...@gmail.com writes:
Hmm, I don't think I like that design. I think we should view this as
a way to embed the SQL and control files needed by the extension in
the server, rather than a
On Mon, Jan 23, 2012 at 9:59 AM, Marko Kreen mark...@gmail.com wrote:
On Sun, Jan 22, 2012 at 11:47 PM, Mikko Tiihonen
mikko.tiiho...@nitorcreations.com wrote:
* introduced a new GUC variable array_output copying the current
bytea_output type, with values full (old value) and
smallfixed
On Mon, Jan 23, 2012 at 01:21:20AM +0400, Alexander Korotkov wrote:
Updated patch is attached. I've updated comment
of mcelem_array_contained_selec with more detailed description of
probability distribution assumption. Also, I found that rest behavious
should be better described by Poisson
Robert Haas robertmh...@gmail.com writes:
On Mon, Jan 23, 2012 at 12:12 AM, Tom Lane t...@sss.pgh.pa.us wrote:
The expensive part of what
we do while holding BufFreelistLock is, I think, iterating through
buffers taking and releasing a spinlock on each one (!).
Yeah ... spinlocks that, by
On Mon, Jan 23, 2012 at 11:01 AM, Tom Lane t...@sss.pgh.pa.us wrote:
Robert Haas robertmh...@gmail.com writes:
On Mon, Jan 23, 2012 at 12:12 AM, Tom Lane t...@sss.pgh.pa.us wrote:
The expensive part of what
we do while holding BufFreelistLock is, I think, iterating through
buffers taking and
On Mon, Jan 23, 2012 at 10:34:12AM -0500, Robert Haas wrote:
On Mon, Jan 23, 2012 at 9:36 AM, Florian Weimer fwei...@bfk.de wrote:
* Robert Haas:
In this particular case, I knew that the change was coming and could
push updated Java and Perl client libraries well before the server-side
Robert Haas robertmh...@gmail.com writes:
Ok, but then, what about .so files? Wouldn't it make sense to be able
to ship also the executable modules needed, and if not, why not?
Sure, that would be as useful as any other part of this feature. We'd
have to think carefully about how to make it
Robert Haas robertmh...@gmail.com writes:
On Mon, Jan 23, 2012 at 9:59 AM, Marko Kreen mark...@gmail.com wrote:
Now that I think about it, same applies to bytea_output?
Probably so. But I think we need not introduce quite so many new
threads on this patch. This is, I think, at least thread
On Mon, Jan 23, 2012 at 5:34 PM, Robert Haas robertmh...@gmail.com wrote:
On Mon, Jan 23, 2012 at 9:36 AM, Florian Weimer fwei...@bfk.de wrote:
* Robert Haas:
In this particular case, I knew that the change was coming and could
push updated Java and Perl client libraries well before the
On Mon, Jan 23, 2012 at 11:20:52AM -0500, Tom Lane wrote:
Robert Haas robertmh...@gmail.com writes:
On Mon, Jan 23, 2012 at 9:59 AM, Marko Kreen mark...@gmail.com wrote:
Now that I think about it, same applies to bytea_output?
Probably so. But I think we need not introduce quite so many
On Mon, Jan 23, 2012 at 7:58 PM, Noah Misch n...@leadboat.com wrote:
+ /* Take care about events with low probabilities. */
+ if (rest DEFAULT_CONTAIN_SEL)
+ {
Why the change from rest 0 to this in the latest version?
Ealier addition of rest distribution require O(m) time.
On Fri, Jan 13, 2012 at 2:29 PM, Christopher Browne cbbro...@gmail.com wrote:
On Fri, Jan 13, 2012 at 3:14 PM, Frederico zepf...@gmail.com wrote:
Hi folks.
Is there any restriction in create and start threads inside Postgres?
I'm trying to develop a multithread planner, and some times is
Marko Kreen mark...@gmail.com writes:
[ bytea_output doesn't need to be GUC_REPORT because format is autodetectable
]
Fair enough. Anyway we're really about two years too late to revisit that.
Btw, it does not seems that per-request metainfo change requires
major version. It just client
Excerpts from Noah Misch's message of vie ene 20 22:33:30 -0300 2012:
On Fri, Jan 20, 2012 at 07:03:22PM -0500, Jaime Casanova wrote:
On Wed, Jan 18, 2012 at 7:01 PM, Noah Misch n...@leadboat.com wrote:
On Wed, Jan 18, 2012 at 09:46:20AM -0500, Jaime Casanova wrote:
ignoring all
On Jan 23, 2012, at 2:49 PM, Tom Lane wrote:
Marko Kreen mark...@gmail.com writes:
[ bytea_output doesn't need to be GUC_REPORT because format is
autodetectable ]
Fair enough. Anyway we're really about two years too late to revisit that.
Btw, it does not seems that per-request
On sön, 2012-01-22 at 11:43 -0500, Andrew Dunstan wrote:
Actually, given recent discussion I think that test should just be
removed from json.c. We don't actually have any test that the code
point is valid (e.g. that it doesn't refer to an unallocated code
point). We don't do that elsewhere
On Wed, Jan 18, 2012 at 9:19 AM, Jim Mlodgenski jimm...@gmail.com wrote:
On Wed, Jan 18, 2012 at 3:08 AM, Heikki Linnakangas
heikki.linnakan...@enterprisedb.com wrote:
On 18.01.2012 07:49, Fujii Masao wrote:
On Fri, Jan 6, 2012 at 1:38 AM, Jim Mlodgenskijimm...@gmail.com wrote:
I have a
On Mon, Jan 23, 2012 at 11:15 AM, Noah Misch n...@leadboat.com wrote:
As I said upthread, and you appeared to agree, the protocol is independent of
individual data type send/recv formats. Even if we were already adding
protocol v4 to PostgreSQL 9.2, having array_send() change its behavior in
On Mon, Jan 23, 2012 at 2:00 PM, A.M. age...@themactionfaction.com wrote:
One simple way clients could detect the binary encoding at startup would be
to pass known test parameters and match against the returned values. If the
client cannot match the response, then it should choose the text
Hello Peter
I checked code, and I don't think so this is good.
A design of optional NULL is going to inconsistent syntax.
RETURN (OLD, NEW, NULL, /* nothing */) is not consistent
But my main argument is not intuitive behave of BEFORE triggers after
this change.
When somebody write BEFORE
On Mon, Jan 23, 2012 at 3:06 PM, Robert Haas robertmh...@gmail.com wrote:
Not being responsible from the maintenance of any PostgreSQL drivers
whatsoever, I don't have a strong feeling about which of these is the
case, and I'd like us to hear from the people who do.
I'm just gonna come right
On Mon, Jan 23, 2012 at 11:06 PM, Robert Haas robertmh...@gmail.com wrote:
On Mon, Jan 23, 2012 at 11:15 AM, Noah Misch n...@leadboat.com wrote:
As I said upthread, and you appeared to agree, the protocol is independent of
individual data type send/recv formats. Even if we were already adding
On Jan 23, 2012, at 4:45 PM, Merlin Moncure wrote:
On Mon, Jan 23, 2012 at 2:00 PM, A.M. age...@themactionfaction.com wrote:
One simple way clients could detect the binary encoding at startup would be
to pass known test parameters and match against the returned values. If the
client cannot
On Sun, Jan 15, 2012 at 10:08 AM, Andrew Dunstan and...@dunslane.net wrote:
Here's an update that adds row_to_json, plus a bit more cleanup.
why not call all these functions 'to_json' and overload them?
merlin
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To make
On 01/23/2012 05:21 PM, Merlin Moncure wrote:
On Sun, Jan 15, 2012 at 10:08 AM, Andrew Dunstanand...@dunslane.net wrote:
Here's an update that adds row_to_json, plus a bit more cleanup.
why not call all these functions 'to_json' and overload them?
I don't honestly feel that advances
2012/1/23 Merlin Moncure mmonc...@gmail.com:
On Sun, Jan 15, 2012 at 10:08 AM, Andrew Dunstan and...@dunslane.net wrote:
Here's an update that adds row_to_json, plus a bit more cleanup.
why not call all these functions 'to_json' and overload them?
-1
older proposal is more consistent with
On Mon, Jan 23, 2012 at 4:12 PM, A.M. age...@themactionfaction.com wrote:
On Jan 23, 2012, at 4:45 PM, Merlin Moncure wrote:
Prefer the version. But why send this over and over with each bind?
Wouldn't you negotiate that when connecting? Most likely, optionally,
doing as much as you can from
On Mon, Jan 23, 2012 at 04:56:24PM -0300, Alvaro Herrera wrote:
Excerpts from Noah Misch's message of vie ene 20 22:33:30 -0300 2012:
pgstattuple() figures the free_percent by adding up all space available to
hold tuples and dividing that by the simple size of the relation. Non-leaf
pages
On Mon, Jan 23, 2012 at 3:49 PM, Robert Haas robertmh...@gmail.com wrote:
The other patches have clearer and specific roles without heuristics
(mostly), so are at least viable for 9.2, though still requiring
agreement.
I think we must also drop removebufmgrfreelist-v1 from consideration,
...
On Mon, Jan 23, 2012 at 8:17 AM, Dimitri Fontaine
dimi...@2ndquadrant.fr wrote:
Robert Haas robertmh...@gmail.com writes:
Ok, but then, what about .so files? Wouldn't it make sense to be able
to ship also the executable modules needed, and if not, why not?
Now you can dump/restore any
On Mon, Jan 23, 2012 at 7:52 PM, Simon Riggs si...@2ndquadrant.com wrote:
On Mon, Jan 23, 2012 at 3:49 PM, Robert Haas robertmh...@gmail.com wrote:
The other patches have clearer and specific roles without heuristics
(mostly), so are at least viable for 9.2, though still requiring
agreement.
On 19/01/12 20:28, Hitoshi Harada wrote:
(Now it occurred to me that forgetting the #include parse_func.h might
hit this breakage..., so I'll fix it here and continue to test, but if
you'll fix it yourself, let me know)
I fixed it here and it now works with my environment.
Well spotted;
On 22 January 2012 05:30, Peter Geoghegan pe...@2ndquadrant.com wrote:
The syntax for constants is sufficiently simple that I think that a
good set of regression tests should make this entirely practicable,
covering all permutations of relevant factors affecting how the
implementation should
Robert Haas wrote:
On Sat, Jan 21, 2012 at 6:32 PM, Jeff Janes jeff.ja...@gmail.com wrote:
I'm finding the backend_writes column pretty unfortunate. The only
use I know of for it is to determine if the bgwriter is lagging
behind. Yet it doesn't serve even this purpose because it lumps
Benedikt Grundmann wrote:
What I think is missing is a clear way to know if you are vacuuming
(and analyzing) enough, and how much you are paying for that.
Any good way to measure if you're vacuuming a particular table enough
needs to note how much free space is in that table and its
On Sat, Jan 21, 2012 at 6:12 PM, Jim Nasby j...@nasby.net wrote:
On Jan 10, 2012, at 3:07 AM, Simon Riggs wrote:
I think we could add an option to check the checksum immediately after
we pin a block for the first time but it would be very expensive and
sounds like we're re-inventing hardware
On Mon, Jan 23, 2012 at 3:21 AM, Benedikt Grundmann
bgrundm...@janestreet.com wrote:
On 19/01/12 17:39, Greg Smith wrote:
On 1/19/12 1:10 PM, Robert Haas wrote:
I have to say that I find that intensely counterintuitive. The
current settings are not entirely easy to tune correctly, but at
** pgbench, permanent tables, scale factor 100, 300 s **
1 group-commit-2012-01-21 614.425851 -10.4%
8 group-commit-2012-01-21 4705.129896 +6.3%
16 group-commit-2012-01-21 7962.131701 +2.0%
24 group-commit-2012-01-21 13074.939290 -1.5%
32 group-commit-2012-01-21 12458.962510 +4.5%
80
On 24 January 2012 06:26, Tatsuo Ishii is...@postgresql.org wrote:
** pgbench, permanent tables, scale factor 100, 300 s **
1 group-commit-2012-01-21 614.425851 -10.4%
8 group-commit-2012-01-21 4705.129896 +6.3%
16 group-commit-2012-01-21 7962.131701 +2.0%
24 group-commit-2012-01-21
* Robert Treat:
Would it be unfair to assert that people who want checksums but aren't
willing to pay the cost of running a filesystem that provides
checksums aren't going to be willing to make the cost/benefit trade
off that will be asked for? Yes, it is unfair of course, but it's
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