Re: Performance bug in prepared statement binding in 9.2?

On 09/10/2013 08:20 AM, Andres Freund wrote:

> A backtrace for this would be useful. Alternatively you could recompile
> postgres using -fno-omit-frame-pointer in CFLAGS and use perf record -g.

It's using a custom build, so this should be doable.

>
> Any chance you have older prepared xacts, older sessions or something
> like that around? I'd expect heap_prune* to be present in workloads that
> spend significant time in heap_hot_search_buffer...


Not sure about prepared transactions. There are certainly probably old
prepared statements around, and long running transactions alongside this
one.

cheers

andrew