[Bug 1783881] Re: ltp-syscalls: msgstress03 fails because systemd limits number of processes

[Thadeu Lima de Souza Cascardo]

The number of processes (in systemd, tasks).

The command below works for me.

Now, should we change the default on our test systems? Running under
systemd-run does not look like a good option.

# systemd-run -p TasksMax=1000000 ./testcases/bin/msgstress03

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Title:
  ltp-syscalls: msgstress03 fails because systemd limits number of
  processes

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in systemd package in Ubuntu:
  Incomplete
Status in linux source package in Cosmic:
  Incomplete
Status in systemd source package in Cosmic:
  Incomplete

Bug description:
  As systemd limits the number of processes, this test will fail because
  it can't fork enough processes. That is limited to when the test is
  run after logging as user 1000, then running sudo. I guess that
  logging as root may not cause this to happen.

  # ./testcases/bin/msgstress03 
  Fork failed (may be OK if under stress)
  Fork failed (may be OK if under stress)
  msgstress03    1  TFAIL  :  msgstress03.c:157:  Fork failed (may be OK if under stress)
  #

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