Hello,
We have recently shifted to postgresql version 9.2.4 from 9.1.3. After the migration, we observed that some of our delete queries on single table [which have triggers, which in turn call other functions] have started consuming large amounts of memory.
In 9.1.3, this usage was upto 25MB with the same load on the same server. With 9.2.4 it has jumped upto ~580 MB. We are monitoring the RES column from top output to get the memory usage.
Our migration method from 9.1.3 to 9.2.4 was take a dump, un-install 9.1.3, install 9.2.4 & restore the dump.
I also went through the thread -
In the thread in the end it is mentioned that there was some data corruption & points to 9.1.6 release notes. I went through the release notes & only thing of note that I found was the re-indexing or performing vacuum operation in case of in-place upgrade, which is not the case for me.
Any help/pointers in debugging would be helpful.
Thanks
Bhushan