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package cgroups
// Config is a struct for cgroups config
type Config struct {
// Mountpoint is where the cgroup filesystem is mounted, usually under /sys/fs/cgroup/
Mountpoint string `toml:"mountpoint"`
// HierarchyRoot is the parent cgroup under which Gitaly creates <Count> of cgroups.
// A system administrator is expected to create such cgroup/directory under <Mountpoint>/memory
// and/or <Mountpoint>/cpu depending on which resource is enabled. HierarchyRoot is expected to
// be owned by the user and group Gitaly runs as.
HierarchyRoot string `toml:"hierarchy_root"`
Repositories Repositories `toml:"repositories"`
// MemoryBytes is the memory limit for the parent cgroup. 0 implies no memory limit.
MemoryBytes int64 `toml:"memory_bytes"`
// CPUShares are the shares of CPU the parent cgroup is allowed to utilize. A value of 1024
// is full utilization of the CPU. 0 implies no CPU limit.
CPUShares uint64 `toml:"cpu_shares"`
// Deprecated: No longer supported after 15.0
Count uint `toml:"count"`
CPU CPU `toml:"cpu"`
Memory Memory `toml:"memory"`
}
// FallbackToOldVersion translates the old format of cgroups into the new
// format.
func (c *Config) FallbackToOldVersion() {
if c.Repositories.Count == 0 {
c.Repositories.Count = c.Count
if c.Repositories.MemoryBytes == 0 && c.Memory.Enabled {
c.Repositories.MemoryBytes = c.Memory.Limit
}
if c.Repositories.CPUShares == 0 && c.CPU.Enabled {
c.Repositories.CPUShares = c.CPU.Shares
}
}
}
// Repositories configures cgroups to be created that are isolated by repository.
type Repositories struct {
// Count is the number of cgroups that will be created for repository-level isolation
// of git commands.
Count uint `toml:"count"`
// MemoryBytes is the memory limit for each cgroup. 0 implies no memory limit.
MemoryBytes int64 `toml:"memory_bytes"`
// CPUShares are the shares of CPU that each cgroup is allowed to utilize. A value of 1024
// is full utilization of the CPU. 0 implies no CPU limit.
CPUShares uint64 `toml:"cpu_shares"`
}
// Memory is a struct storing cgroups memory config
// Deprecated: Not in use after 15.0.
type Memory struct {
Enabled bool `toml:"enabled"`
// Limit is the memory limit in bytes. Could be -1 to indicate unlimited memory.
Limit int64 `toml:"limit"`
}
// CPU is a struct storing cgroups CPU config
// Deprecated: Not in use after 15.0.
type CPU struct {
Enabled bool `toml:"enabled"`
// Shares is the number of CPU shares (relative weight (ratio) vs. other cgroups with CPU shares).
Shares uint64 `toml:"shares"`
}
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