Re: Weird change of behavior of VSZ allocation in 14.2 compared to 12.4

On 7/4/2025 11:38, Paul wrote:
> Hi Karl,
>
> Nope, we never ever tuned the allocator. So there is no `/etc/malloc.conf` file and no use of  `malloc_conf` in any of our applications.
> Everything is default on 14.2 as well as on 12.4.

BTW you may find that grabbing the jemalloc repo from Github, checking 
out 5.3.0 (which is the current "released" version) and building it with 
"--prefix=/usr/local" then linking against that improves behavior.

Note that it does not, "as built", allow the background thread reclaim 
function (I've not dug into why its off on FreeBSD but its off) but it 
does behave differently in terms of both RSS and VSZ than the shipped 
version for 14.x which is an earlier rev....

--
Karl Denninger
karl@denninger.net
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