[Bug 1976287] Re: casper: qemu instances too small during autopkgtest (potential OOM failures)

[Dimitri John Ledkov]

Although this is autopkgtest change only, it affects testing of kernels,
thus it would be nice to publish this SRU without keeping it in
-proposed only.

** Changed in: casper (Ubuntu Focal)
       Status: New => In Progress

** Changed in: casper (Ubuntu Jammy)
       Status: New => In Progress

** Changed in: casper (Ubuntu Kinetic)
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1976287

Title:
  casper: qemu instances too small during autopkgtest (potential OOM
  failures)

Status in casper package in Ubuntu:
  Fix Committed
Status in casper source package in Focal:
  In Progress
Status in casper source package in Jammy:
  In Progress
Status in casper source package in Kinetic:
  Fix Committed

Bug description:
  [Impact]

  During autopkgtest we are creating VMs with 768MB of RAM, that used to
  be enough in the past, but nowdays we typically require more memory
  and we may trigger some sporadic out-of-memory failures during
  autopkgtest.

  [Test case]

  Run autopkgtest with a recent kernel (e.g., 5.15 or above).

  [Fix]

  Bump up the memory size to 1G.

  [Regression potential]

  We may see regressions in test systems with a small amount of memory
  (in the host / hypervisor), because after this change we need more RAM
  in order to run and complete autopkgtest successfully.

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