From: pgsql-hackers-ow...@postgresql.org [mailto:pgsql-hackers-
ow...@postgresql.org] On Behalf Of Merlin Moncure
Sent: Wednesday, November 07, 2012 5:26 AM
To: PostgreSQL-development
Cc: Atri Sharma
Subject: [HACKERS] WIP patch for hint bit i/o mitigation
Following the sig is a first cut
On 07-Nov-2012, at 15:46, Amit Kapila amit.kap...@huawei.com wrote:
From: pgsql-hackers-ow...@postgresql.org [mailto:pgsql-hackers-
ow...@postgresql.org] On Behalf Of Merlin Moncure
Sent: Wednesday, November 07, 2012 5:26 AM
To: PostgreSQL-development
Cc: Atri Sharma
Subject: [HACKERS] WIP
-Original Message-
From: Atri Sharma [mailto:atri.j...@gmail.com]
Sent: Wednesday, November 07, 2012 4:02 PM
To: Amit Kapila
Cc: Merlin Moncure; PostgreSQL-development
Subject: Re: [HACKERS] WIP patch for hint bit i/o mitigation
On 07-Nov-2012, at 15:46, Amit Kapila
The Frontend/Backend protocol's bind message allows to
specify mixed text and binary result formats, but there
is not support in the C API for that.
I'd like to add support for that to libpq for these reasons:
- I think that every feature of the line protocol should
be exposed in the C API.
-
On Wed, Nov 7, 2012 at 5:31 PM, Amit Kapila amit.kap...@huawei.com wrote:
-Original Message-
From: Atri Sharma [mailto:atri.j...@gmail.com]
Sent: Wednesday, November 07, 2012 4:02 PM
To: Amit Kapila
Cc: Merlin Moncure; PostgreSQL-development
Subject: Re: [HACKERS] WIP patch
On 7 November 2012 13:08, Albe Laurenz laurenz.a...@wien.gv.at wrote:
- I think that every feature of the line protocol should
be exposed in the C API.
Exposing every possible bug in ther underlying protocol isn't the best
plan though, especially when doing so complicates the API just to
On Wed, Nov 7, 2012 at 5:19 AM, Amit Kapila amit.kap...@huawei.com wrote:
On Tuesday, November 06, 2012 11:30 PM Robert Haas wrote:
On Wed, Oct 31, 2012 at 8:17 AM, Magnus Hagander mag...@hagander.net
wrote:
I'm not convinced we ever *had* a consensus on this. There were
proposals, but I'm
For 9.2 we discussed having COPY setting tuples as frozen. Various
details apply.
Earlier threads:
RFC: Making TRUNCATE more MVCC-safe
COPY with hints, rebirth
I was unhappy with changing the behaviour of TRUNCATE, and still am.
So the proposal here is to have a specific modifier on TRUNCATE
I just observed that if I run src/test/regress' make
installcheck-parallel and concurrently src/test/isolation's make
installcheck, I very reproducibly get a segfault (in an assert-enabled
build). Apparently the problem is that somebody is trying to transfer
predicate locks to a relation, but the
On Wed, Nov 7, 2012 at 6:01 AM, Amit Kapila amit.kap...@huawei.com wrote:
Following the sig is a first cut at a patch (written by Atri) that
attempts to mitigate hint bit i/o penalty when many pages worth of
tuples are sequentially written out with the same transaction id.
There have been
On Wed, Nov 7, 2012 at 7:08 AM, Albe Laurenz laurenz.a...@wien.gv.at wrote:
The Frontend/Backend protocol's bind message allows to
specify mixed text and binary result formats, but there
is not support in the C API for that.
I'd like to add support for that to libpq for these reasons:
- I
Magnus Hagander mag...@hagander.net writes:
On Wed, Nov 7, 2012 at 5:19 AM, Amit Kapila amit.kap...@huawei.com wrote:
However there is one more point which I am not able to clearly make out is
how to write into file that contains
all configuration parameters changed by SQL.
Perhaps you can
On Wed, Nov 7, 2012 at 5:53 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Magnus Hagander mag...@hagander.net writes:
On Wed, Nov 7, 2012 at 5:19 AM, Amit Kapila amit.kap...@huawei.com wrote:
However there is one more point which I am not able to clearly make out is
how to write into file that
Magnus Hagander mag...@hagander.net writes:
On Wed, Nov 7, 2012 at 5:53 PM, Tom Lane t...@sss.pgh.pa.us wrote:
I'm not sure that the above approach works anyway --- for instance, the
current setting might be a SET LOCAL result, in which case you still
don't know anything about what the
On 16.10.2012 15:31, Heikki Linnakangas wrote:
On 15.10.2012 19:31, Fujii Masao wrote:
On Mon, Oct 15, 2012 at 11:27 PM, Heikki Linnakangas
hlinnakan...@vmware.com wrote:
On 15.10.2012 13:13, Heikki Linnakangas wrote:
Oh, I didn't remember that we've documented the specific structs
that we
On Wed, Nov 7, 2012 at 6:19 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Magnus Hagander mag...@hagander.net writes:
On Wed, Nov 7, 2012 at 5:53 PM, Tom Lane t...@sss.pgh.pa.us wrote:
I'm not sure that the above approach works anyway --- for instance, the
current setting might be a SET LOCAL result,
Magnus Hagander mag...@hagander.net writes:
On Wed, Nov 7, 2012 at 6:19 PM, Tom Lane t...@sss.pgh.pa.us wrote:
You could dig it out of the stack if it's there, but that doesn't fix
the race-condition aspect. Now a race is inevitable if two sessions try
to set the *same* variable, but I think
Simon Riggs si...@2ndquadrant.com writes:
On 7 November 2012 13:08, Albe Laurenz laurenz.a...@wien.gv.at wrote:
- I think that every feature of the line protocol should
be exposed in the C API.
My recollection is that there are several things in the V3 protocol that
were put there to satisfy
On Wed, Nov 7, 2012 at 12:29 PM, Tom Lane t...@sss.pgh.pa.us wrote:
Magnus Hagander mag...@hagander.net writes:
On Wed, Nov 7, 2012 at 6:19 PM, Tom Lane t...@sss.pgh.pa.us wrote:
You could dig it out of the stack if it's there, but that doesn't fix
the race-condition aspect. Now a race is
Robert Haas robertmh...@gmail.com writes:
On Wed, Nov 7, 2012 at 12:29 PM, Tom Lane t...@sss.pgh.pa.us wrote:
... we don't normally read the config file within-commands,
and there are both semantic and implementation problems to overcome
if you want to do so.
Why would you need to? It seems
On Wed, Nov 07, 2012 at 12:54:57PM -0300, Alvaro Herrera wrote:
I just observed that if I run src/test/regress' make
installcheck-parallel and concurrently src/test/isolation's make
installcheck, I very reproducibly get a segfault (in an assert-enabled
build). Apparently the problem is that
Andres Freund wrote:
On Wed, Nov 07, 2012 at 12:54:57PM -0300, Alvaro Herrera wrote:
I think the fix is just to move the heap_open calls some lines upwards, as
in
the attached patch.
Looks like the right thing to me.
Pushed.
--
Álvaro Herrera
You're being obtuse, Josh. These parameters can be set the same way any
other parameters can, including ALTER ROLE SET or ALTER DATABASE SET.
The superuser only restriction is that only a superuser can execute
the ALTER, not that the target role has to be superuser.
Oh? Ok, that's helpful.
Well, Magnus' proposed implementation supposed that the existing values
*have* been loaded into the current session. I agree that with some
locking and yet more code you could implement it without that. But this
still doesn't seem to offer any detectable benefit over value-per-file.
Well,
On Wed, Nov 7, 2012 at 2:50 PM, Josh Berkus j...@agliodbs.com wrote:
Well, Magnus' proposed implementation supposed that the existing values
*have* been loaded into the current session. I agree that with some
locking and yet more code you could implement it without that. But this
still
On Wed, Nov 07, 2012 at 03:15:07PM -0500, Robert Haas wrote:
On Wed, Nov 7, 2012 at 2:50 PM, Josh Berkus j...@agliodbs.com wrote:
Well, Magnus' proposed implementation supposed that the existing values
*have* been loaded into the current session. I agree that with some
locking and yet more
Josh Berkus j...@agliodbs.com writes:
It still eliminates the main potential use of auto-explain on production
sites, though, which is to turn it on only for specific operations.
I've never been able to make use of auto-explain for any real diagnostic
purpose on a production site, and I don't
Hello,
So it is possible to do this in other ways but I thought it might be
interesting to allow people to define fifo or pipe as a log_desination.
This would allow a person to tail the fifo to receive the outputs of the
log as it happens but would not take up precious IO or space from the
On Wed, Nov 7, 2012 at 11:45 AM, Josh Berkus j...@agliodbs.com wrote:
You're being obtuse, Josh. These parameters can be set the same way any
other parameters can, including ALTER ROLE SET or ALTER DATABASE SET.
The superuser only restriction is that only a superuser can execute
the ALTER,
On Wed, Nov 7, 2012 at 9:55 PM, Joshua D. Drake j...@commandprompt.com wrote:
Hello,
So it is possible to do this in other ways but I thought it might be
interesting to allow people to define fifo or pipe as a log_desination. This
would allow a person to tail the fifo to receive the outputs
Dean Rasheed dean.a.rash...@gmail.com writes:
Thanks for looking at this.
Attached is a rebased patch using new OIDs.
I'm starting to look at this patch now. I don't understand the intended
interaction with qualified INSTEAD rules. The code looks like
+ if (!instead
On Wed, Nov 07, 2012 at 05:04:48PM -0500, Tom Lane wrote:
Dean Rasheed dean.a.rash...@gmail.com writes:
Thanks for looking at this.
Attached is a rebased patch using new OIDs.
I'm starting to look at this patch now. I don't understand the intended
interaction with qualified INSTEAD
On Wed, Nov 07, 2012 at 12:55:03PM -0800, Joshua D. Drake wrote:
Hello,
So it is possible to do this in other ways but I thought it might be
interesting to allow people to define fifo or pipe as a
log_desination. This would allow a person to tail the fifo to
receive the outputs of the
David Fetter da...@fetter.org writes:
On Wed, Nov 07, 2012 at 05:04:48PM -0500, Tom Lane wrote:
Should we be doing something
about such cases, or is playing dumb correct?
The SQL standard handles deciding the behavior based on whether WITH
CHECK OPTION is included in the view DDL. See the
On 11/2/12 11:17 AM, Magnus Hagander wrote:
-Add a configuration subdirectory to the default installation.
Needs to follow the config file location, so things like the
Debian relocation of postgresql.conf still work. Maybe it has zero
files; maybe it has one that's named for
On 7 November 2012 22:04, Tom Lane t...@sss.pgh.pa.us wrote:
Dean Rasheed dean.a.rash...@gmail.com writes:
Thanks for looking at this.
Attached is a rebased patch using new OIDs.
I'm starting to look at this patch now. I don't understand the intended
interaction with qualified INSTEAD
What prevents you from doing so? The performance impact? The volume
of logs generated?
Yes and yes.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
On Wed, Nov 7, 2012 at 4:55 PM, Josh Berkus j...@agliodbs.com wrote:
What prevents you from doing so? The performance impact? The volume
of logs generated?
Yes and yes.
I've never noticed a performance impact, unless you are having it
analyze, or having it log every query. How do you
As a followup to Magnus's report that pg_upgrade was slow for many
tables, I did some more testing with many tables, e.g.:
CREATE TABLE test991 (x SERIAL);
I ran it for 0, 1k, 2k, ... 16k tables, and got these results:
tablespg_dump restore pg_upgrade(increase)
Dean Rasheed dean.a.rash...@gmail.com writes:
On 7 November 2012 22:04, Tom Lane t...@sss.pgh.pa.us wrote:
This seems to me to be dangerous and unintuitive, not to mention
underdocumented. I think it would be better to just not do anything if
there is any INSTEAD rule, period.
Is this any
Since commit 1eb1dde049ccfffc42c80c2, Have make never delete
intermediate files automatically, I've frequently been getting errors
doing make -j2 after a maintainer-clean.
parser.c:25:21: fatal error: preproc.h: No such file or directory
compilation terminated.
make[4]: *** [parser.o] Error 1
Jeff Janes jeff.ja...@gmail.com writes:
Since commit 1eb1dde049ccfffc42c80c2, Have make never delete
intermediate files automatically, I've frequently been getting errors
doing make -j2 after a maintainer-clean.
Worksforme on a Fedora 16 box (make 3.82). What gmake version are you
running?
Hello,
I am sending patch for errcontext() function.
I use procedural languages to do some operation, but when error occurs
,the CONTEXT error messages from procedural languages doesn't display in
local language.
for example:
postgres=#
On Wed, 2012-11-07 at 12:55 -0800, Joshua D. Drake wrote:
So it is possible to do this in other ways but I thought it might be
interesting to allow people to define fifo or pipe as a
log_desination.
You could do this with a logging hook as a plugin, so you don't have to
make the effort to
I wrote:
Jeff Janes jeff.ja...@gmail.com writes:
Since commit 1eb1dde049ccfffc42c80c2, Have make never delete
intermediate files automatically, I've frequently been getting errors
doing make -j2 after a maintainer-clean.
Worksforme on a Fedora 16 box (make 3.82). What gmake version are you
45 matches
Mail list logo
