libvirt-executor improvements
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Kristian Klausen authoredFrom the kernel patch series[1]: "This series provides an asynchronous means of reporting free guest pages to a hypervisor so that the memory associated with those pages can be dropped and reused by other processes and/or guests on the host. Using this it is possible to avoid unnecessary I/O to disk and greatly improve performance in the case of memory overcommit on the host."[1] The runner hosts may be memory overcommitted if there is too many running VMs and containers at the same time, which this should help to avoid. [1] https://lore.kernel.org/linux-mm/20200211224416.29318.44077.stgit@localhost.localdomain/