On Sat, Jun 18, 2016 at 3:43 AM, Tom Lane wrote:
> DSM already exists, and for many purposes its lack of a
> within-a-shmem-segment dynamic allocator is irrelevant; the same purpose
> is served (with more speed, more reliability, and less code) by releasing
> the whole DSM segment when no longer n
On Sat, Jun 18, 2016 at 12:45 AM, Tom Lane wrote:
> Aleksey Demakov writes:
>> On Fri, Jun 17, 2016 at 10:54 PM, Robert Haas wrote:
>>> In my opinion, that's not going to fly. If I thought otherwise, I
>>> would not have developed the DSM facility in the first
On Sat, Jun 18, 2016 at 12:31 AM, Andres Freund wrote:
> On 2016-06-18 00:23:14 +0600, Aleksey Demakov wrote:
>> Finally, it's possible to repeatedly mmap
>> and munmap on portions of a contiguous address space providing
>> a given addr argument for both of them.
Sorry for unclear language. Late Friday evening in my place is to blame.
On Sat, Jun 18, 2016 at 12:23 AM, Aleksey Demakov wrote:
> On Fri, Jun 17, 2016 at 10:54 PM, Robert Haas wrote:
>> On Fri, Jun 17, 2016 at 12:34 PM, Aleksey Demakov wrote:
>>>> I expect that to b
On Fri, Jun 17, 2016 at 10:54 PM, Robert Haas wrote:
> On Fri, Jun 17, 2016 at 12:34 PM, Aleksey Demakov wrote:
>>> I expect that to be useful for parallel query and anything else where
>>> processes need to share variable-size data. However, that's different
>
On Fri, Jun 17, 2016 at 10:18 PM, Robert Haas wrote:
> On Fri, Jun 17, 2016 at 11:30 AM, Tom Lane wrote:
> But I'm a bit confused about where it gets the bytes it wants to
> manage. There's no call to dsm_create() or ShmemAlloc() anywhere in
> the code, at least not that I could find quickly. T
On Fri, Jun 17, 2016 at 9:30 PM, Tom Lane wrote:
> Aleksey Demakov writes:
>> I have some very experimental code to enable dynamic memory allocation
>> of shared memory for postgresql backend processes.
>
> Um ... what's this do that the existing DSM stuff doesn&#
Hi all,
I have some very experimental code to enable dynamic memory allocation
of shared memory for postgresql backend processes. The source code in
the repository is not complete yet. Moreover it is not immediately
useful by itself. However it might serve as the basis to implement
higher-level fe
A very quick and dirty hack I did in src/backend/optimizer/plan/initsplan.c (in
9.5.3):
--- initsplan.c.orig2016-06-14 19:08:27.0 +0600
+++ initsplan.c 2016-06-14 19:10:55.0 +0600
@@ -185,9 +185,12 @@
if (IsA(node, Var))
{
Hi all,
I have a data store where tuples have unique identities that normally are not
visible.
I also have a FDW to work with this data store. As per the docs to implement
updates
for this data store I have AddForeignUpdateTargets() function that adds an
artificial
column to the target list.
I
Hi there,
> On 23 Mar 2016, at 22:38, Tom Lane wrote:
> Anybody want to bikeshed the directory name src/feutils? Maybe fe-utils
> would be more readable. And where to put the corresponding header files?
> src/include/fe-utils?
For me “utils" sounds like something of auxiliary nature. if some
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