Re: Proposal : Use bump memory context for temp buffers

On 16/12/2025 15:05, Daniil Davydov wrote:
> Hi,
>
> Commit [1] introduced a new memory context suitable for situations when we
> should allocate a large amount of memory with no need to free or reallocate it.
>
> I think that it will be useful for temp buffers :
> 1) We allocate them lazily and never try to free them.
> 2) Some users are very active in working with temporary tables, and as
> a result,
> they set large values for the "temp_buffers" parameter (several gigabytes).
>
> Thus, the use case for temp buffers seems to perfectly fit for bump
> memory context.
> What do you think?

It makes no difference. The bump memory context is useful if you perform
a lot of small allocations, because it skips the overhead of the chunk
headers. In LocalBufferContext, we only ever make one allocation.

- Heikki