I'm okay with any of the proposed designs or with dropping the idea. Closing
the loop on a few facts:
On Sat, Mar 07, 2015 at 04:34:41PM -0600, Jim Nasby wrote:
> If we go that route, does it still make sense to explicitly use
> repalloc_huge? It will just cut over to that at some point (128M?) a
On 2015-03-09 17:12:22 -0500, Jim Nasby wrote:
> That will be significantly more code than a simple repalloc, but as long as
> people are OK with that I can go that route.
I still would like to see some actual evidence of need for change before
we invest more time/code here.
Greetings,
Andres Fr
On 3/9/15 12:28 PM, Alvaro Herrera wrote:
Robert Haas wrote:
On Sat, Mar 7, 2015 at 5:49 PM, Andres Freund wrote:
On 2015-03-05 15:28:12 -0600, Jim Nasby wrote:
I was thinking the simpler route of just repalloc'ing... the memcpy would
suck, but much less so than the extra index pass. 64M gets
Robert Haas wrote:
> On Sat, Mar 7, 2015 at 5:49 PM, Andres Freund wrote:
> > On 2015-03-05 15:28:12 -0600, Jim Nasby wrote:
> >> I was thinking the simpler route of just repalloc'ing... the memcpy would
> >> suck, but much less so than the extra index pass. 64M gets us 11M tuples,
> >> which prob
On Sat, Mar 7, 2015 at 5:49 PM, Andres Freund wrote:
> On 2015-03-05 15:28:12 -0600, Jim Nasby wrote:
>> I was thinking the simpler route of just repalloc'ing... the memcpy would
>> suck, but much less so than the extra index pass. 64M gets us 11M tuples,
>> which probably isn't very common.
>
> T
On 3/7/15 4:49 PM, Andres Freund wrote:
On 2015-03-05 15:28:12 -0600, Jim Nasby wrote:
I was thinking the simpler route of just repalloc'ing... the memcpy would
suck, but much less so than the extra index pass. 64M gets us 11M tuples,
which probably isn't very common.
That has the chance of co
On 2015-03-05 15:28:12 -0600, Jim Nasby wrote:
> I was thinking the simpler route of just repalloc'ing... the memcpy would
> suck, but much less so than the extra index pass. 64M gets us 11M tuples,
> which probably isn't very common.
That has the chance of considerably increasing the peak memory
On 3/7/15 12:48 AM, Noah Misch wrote:
On Sat, Mar 07, 2015 at 12:46:42AM -0500, Tom Lane wrote:
Noah Misch writes:
On Thu, Mar 05, 2015 at 03:28:12PM -0600, Jim Nasby wrote:
I was thinking the simpler route of just repalloc'ing... the memcpy would
suck, but much less so than the extra index p
On Sat, Mar 07, 2015 at 12:46:42AM -0500, Tom Lane wrote:
> Noah Misch writes:
> > On Thu, Mar 05, 2015 at 03:28:12PM -0600, Jim Nasby wrote:
> >> I was thinking the simpler route of just repalloc'ing... the memcpy would
> >> suck, but much less so than the extra index pass. 64M gets us 11M tuples
Noah Misch writes:
> On Thu, Mar 05, 2015 at 03:28:12PM -0600, Jim Nasby wrote:
>> I was thinking the simpler route of just repalloc'ing... the memcpy would
>> suck, but much less so than the extra index pass. 64M gets us 11M tuples,
>> which probably isn't very common.
> +1. Start far below 64
On Thu, Mar 05, 2015 at 03:28:12PM -0600, Jim Nasby wrote:
> On 3/4/15 9:10 AM, Robert Haas wrote:
> >On Wed, Feb 25, 2015 at 5:06 PM, Jim Nasby wrote:
> >>Could the large allocation[2] for the dead tuple array in lazy_space_alloc
> >>cause problems with linux OOM? [1] and some other things I've r
On 3/4/15 9:10 AM, Robert Haas wrote:
On Wed, Feb 25, 2015 at 5:06 PM, Jim Nasby wrote:
Could the large allocation[2] for the dead tuple array in lazy_space_alloc
cause problems with linux OOM? [1] and some other things I've read indicate
that a large mmap will count towards total system memory
On Wed, Feb 25, 2015 at 5:06 PM, Jim Nasby wrote:
> Could the large allocation[2] for the dead tuple array in lazy_space_alloc
> cause problems with linux OOM? [1] and some other things I've read indicate
> that a large mmap will count towards total system memory, including
> producing a failure i
Could the large allocation[2] for the dead tuple array in
lazy_space_alloc cause problems with linux OOM? [1] and some other
things I've read indicate that a large mmap will count towards total
system memory, including producing a failure if overcommit is disabled.
Would it be worth avoiding t
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