note

type AfterInstallation struct {
	UuiddSocketStatus bool // UuiddSocketStatus is the status of systemd unit called "uuidd.socket"
	LogindConfigured  bool // LogindConfigured is true if SAP's logind customisation file is in-place
}

type BlockDeviceQueue struct {
	BlockDeviceSchedulers param.BlockDeviceSchedulers
	BlockDeviceNrRequests param.BlockDeviceNrRequests
}

type HANARecommendedOSSettings struct {
	KernelMMTransparentHugepage string
	KernelMMKsm                 bool
	KernelNumaBalancing         bool
}

type INISettings struct {
	ConfFilePath    string            // Full path to the 3rd party vendor's tuning configuration file
	ID              string            // ID portion of the tuning configuration
	DescriptiveName string            // Descriptive name portion of the tuning configuration
	SysctlParams    map[string]string // Sysctl parameter values from the computer system
}

type LinuxPagingImprovements struct {
	SysconfigPrefix string // Used by test cases to specify alternative sysconfig location

	VMPagecacheLimitMB          uint64
	VMPagecacheLimitIgnoreDirty int
	UseAlgorithmForHANA         bool
}

type Note interface {
	Initialise() (Note, error) // Inspect all tuning parameters and return.
	Optimise() (Note, error)   // (Re)calculate all parameters, but do not apply.
	Apply() error              // Apply all tuning parameters without further calculation.
	Name() string              // The original note name.
}

type NoteFieldComparison struct {
	ReflectFieldName               string // Structure field name
	ReflectMapKey                  string // If structure field is a map, this is the map key
	ActualValue, ExpectedValue     interface{}
	ActualValueJS, ExpectedValueJS string
	MatchExpectation               bool
}

type PrepareForSAPEnvironments struct {
	SysconfigPrefix                                         string
	ShmFileSystemSizeMB                                     int64
	LimitNofileSapsysSoft, LimitNofileSapsysHard            system.SecurityLimitInt
	LimitNofileSdbaSoft, LimitNofileSdbaHard                system.SecurityLimitInt
	LimitNofileDbaSoft, LimitNofileDbaHard                  system.SecurityLimitInt
	KernelShmMax, KernelShmAll, KernelShmMni, VMMaxMapCount uint64
	KernelSemMsl, KernelSemMns, KernelSemOpm, KernelSemMni  uint64
}

type SUSENetCPUOptimisation struct {
	SysconfigPrefix string

	// Section "SLES11/12 Network Tuning & Optimization"
	NetCoreWmemMax, NetCoreRmemMax                                   uint64
	NetCoreNetdevMaxBacklog, NetCoreSoMaxConn                        uint64
	NetIpv4TcpRmem, NetIpv4TcpWmem                                   uint64
	NetIpv4TcpTimestamps, NetIpv4TcpSack                             uint64
	NetIpv4TcpFack, NetIpv4TcpDsack                                  uint64
	NetIpv4IpfragLowThres, NetIpv4IpfragHighThres                    uint64
	NetIpv4TcpMaxSynBacklog, NetIpv4TcpSynackRetries                 uint64
	NetIpv4TcpRetries2                                               uint64
	NetTcpKeepaliveTime, NetTcpKeepaliveProbes, NetTcpKeepaliveIntvl uint64
	NetTcpTwRecycle, NetTcpTwReuse, NetTcpFinTimeout                 uint64
	NetTcpMtuProbing                                                 uint64
	// Section "Basic TCP/IP Optimization for SLES
	NetIpv4TcpSyncookies, NetIpv4ConfAllAcceptSourceRoute                 uint64
	NetIpv4ConfAllAcceptRedirects, NetIpv4ConfAllRPFilter                 uint64
	NetIpv4IcmpEchoIgnoreBroadcasts, NetIpv4IcmpIgnoreBogusErrorResponses uint64
	NetIpv4ConfAllLogMartians                                             uint64
	KernelRandomizeVASpace, KernelKptrRestrict                            uint64
	FSProtectedHardlinks, FSProtectedSymlinks                             uint64
	KernelSchedChildRunsFirst                                             uint64
}

type SUSESysOptimisation struct {
	SysconfigPrefix string

	// Section "SLES Memory Tuning and Optimization"
	VMNumberHugePages, VMSwappiness, VMVfsCachePressure uint64
	VMOvercommitMemory, VMOvercommitRatio               uint64

	// Section "SLES Disk I/O & Storage Tuning Optimization"
	VMDirtyRatio, VMDirtyBackgroundRatio uint64
	BlockDeviceSchedulers                param.BlockDeviceSchedulers
}

type TuningOptions map[string]Note // Collection of tuning options from SAP notes and 3rd party vendors.

type VmwareGuestIOElevator struct {
	BlockDeviceSchedulers param.BlockDeviceSchedulers
}