cthrace/collabvm-1.2.ts
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Only try enabling cpuset controller if required

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Additionally, "handle" (in many airquotes) errors trying to set controller values.
This commit is contained in:
modeco80
2024-11-02 18:01:07 -04:00
parent e7a06b7141
commit fe82973b9f
3 changed files with 58 additions and 27 deletions
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19
config.example.toml
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@@ -57,17 +57,20 @@ qemuArgs = "qemu-system-x86_64"
vncPort = 5900
snapshots = true
# Resource limits. Only works on Linux, with `Delegate=yes` set in your .service file.
# Resource limits. Only works on Linux, with `Delegate=yes` set in your .service file. No-op on other platforms.
#
# cpuUsageMax optionally specifies the max CPU usage as percentage in the common top notation, so 200% means 2 CPUs, 400% is 4 CPUs,
# so on.
#
# runOnCpus is an optional array that specifies what CPUs the VM is allowed to run on.
# Systemd user slices can not delegate the cpuset controller, meaning this option will *not* work if you do not use a system service.
# (effectively, it will be a loud no-op that logs an error on startup)
#
# cpuUsageMax specifies CPU usage limits in the common top notation, so 200% means 2 CPUs, so on so forth.
# runOnCpus specifies what CPUs the VM is allowed to run on.
# limitProcess is optional (default false) and determines if only qemu vCPU threads are put into the cgroup,
# or the entire QEMU process (incl. all its threads). This is rarely what you want, so the example does not
# provide it.
# or the entire QEMU process (incl. all its threads). The default behaviour of only limiting vCPU threads
# is more than likely what you want, so the example configuration omits specifying this key.
#
# Either can be omitted or specified; however, if you want to disable it entirely,
# it's a better idea to just comment this inline table out,
# since the inline table existing is used to enable cgroup support.
# Commenting this inline table from the configuration disables resource limiting entirely.
resourceLimits = { cpuUsageMax = 100, runOnCpus = [ 2, 4 ] }