[Akonadi] [Bug 423575] New: Akonadi server reproducibly eats ∞ memory (possibly in Akonadi::Server::Connection::handleIncomingData() [connection.cpp:274])

[Szőts Ákos]

https://bugs.kde.org/show_bug.cgi?id=423575

            Bug ID: 423575
           Summary: Akonadi server reproducibly eats ∞ memory (possibly in
                    Akonadi::Server::Connection::handleIncomingData()
                    [connection.cpp:274])
           Product: Akonadi
           Version: 5.14.1
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: server
          Assignee: kdepim-bugs at kde.org
          Reporter: szotsaki at gmail.com
  Target Milestone: ---

Created attachment 129717
  --> https://bugs.kde.org/attachment.cgi?id=129717&action=edit
Top-down

A memory leak is present in akonadi-server versions ranging from 18.08 to
20.04: whenever KMail rechecks all folders of my Google IMAP account, memory
just grows but never shrinks.

I've created heaptrack summaries both for 18.04 and 20.04 of the leak which
show that the server starts eating memory. Last time it went up to 12 GB when I
stopped it.

You can reach the pictures showing the memory occupation and a backtrace file
here: https://mega.nz/#F!RQ4iBSRT!DmHq4qoDKpuVyewuAmazsA

I attach two of pictures for 20.04 here as well.

For 20.04 I have the heaptrack file stored locally which is 14 GB in size, but
I can upload it in case you need it.

It's not a classical memory leak since everything will be freed up upon exit
however I still consider a valid one.

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