com.bigdata.counters

Interface IHostCounters

All Superinterfaces:

ICounterHierarchy, IRequiredHostCounters

All Known Implementing Classes:

IOStatCollector, SarCpuUtilizationCollector, VMStatCollector, VMStatCollector

public interface IHostCounters
extends IRequiredHostCounters

Additional counters that hosts can report.

Version:

$Id$

Author:

Bryan Thompson

Field Summary

Fields

Modifier and Type	Field and Description
static String	CPU_PercentIOWait Percentage of the time the CPU(s) were idle while the system had an outstanding IO in [0:1].
static String	CPU_PercentSystemTime Percentage of the time the processor is not idle that it is executing at the system (aka kernel) level in [0:1] (normalized to 100% in single CPU and SMP environments).
static String	CPU_PercentUserTime Percentage of the time the processor is not idle that it is executing at the user level in [0:1] (normalized to 100% in single CPU and SMP environments).
static String	Info_NumProcessors The #of processors.
static String	Info_ProcessorInfo CPU family information.
static String	Memory_Bytes_Available The total amount of memory available to the host.
static String	Memory_Bytes_Free The #of bytes of idle memory (vmstat, /proc/meminfo/MemFree).
static String	Memory_MinorFaultsPerSec Faults that did not require loading a page from disk.
static String	Memory_SwapBytesAvailable The #of bytes of swap space that are in available (/proc/meminfo/SwapTotal).
static String	Memory_SwapBytesUsed The #of bytes of swap space that are in use (vmstat or /proc/meminfo/SwapFree).
static String	PhysicalDisk_BytesPerSec Disk bytes per second for the host (total of bytes read per second and bytes written per second).
static String	PhysicalDisk_ReadsPerSec #of disk read operations per second.
static String	PhysicalDisk_TransfersPerSec Disk operations per second for the host (total of disk reads per second and disk writes per second).
static String	PhysicalDisk_WritesPerSec #of disk write operations per second.

Fields inherited from interface com.bigdata.counters.IRequiredHostCounters

CPU_PercentProcessorTime, Info_Architecture, Info_OperatingSystemName, Info_OperatingSystemVersion, LogicalDisk_PercentFreeSpace, Memory_majorFaultsPerSecond, PhysicalDisk_BytesReadPerSec, PhysicalDisk_BytesWrittenPerSec

Fields inherited from interface com.bigdata.counters.ICounterHierarchy

CPU, Info, LogicalDisk, Memory, Memory_GarbageCollectors, Memory_Memory_Pools, PhysicalDisk, ps

Field Detail

Info_ProcessorInfo

static final String Info_ProcessorInfo

CPU family information.

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Constant Field Values

Info_NumProcessors

static final String Info_NumProcessors

The #of processors.

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Constant Field Values

CPU_PercentUserTime

static final String CPU_PercentUserTime

Percentage of the time the processor is not idle that it is executing at the user level in [0:1] (normalized to 100% in single CPU and SMP environments).

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Constant Field Values

CPU_PercentSystemTime

static final String CPU_PercentSystemTime

Percentage of the time the processor is not idle that it is executing at the system (aka kernel) level in [0:1] (normalized to 100% in single CPU and SMP environments).

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Constant Field Values

CPU_PercentIOWait

static final String CPU_PercentIOWait

Percentage of the time the CPU(s) were idle while the system had an outstanding IO in [0:1].

Note: The Windows platform does not appear to be able to report this counter. If it did I would move this into the "required" category. The LBS DOES use this for its decisions and has to use a faked value for Windows.

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Constant Field Values

Memory_Bytes_Available

static final String Memory_Bytes_Available

The total amount of memory available to the host.

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Constant Field Values

Memory_Bytes_Free

static final String Memory_Bytes_Free

The #of bytes of idle memory (vmstat, /proc/meminfo/MemFree).

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Constant Field Values

Memory_SwapBytesAvailable

static final String Memory_SwapBytesAvailable

The #of bytes of swap space that are in available (/proc/meminfo/SwapTotal).

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Constant Field Values

Memory_SwapBytesUsed

static final String Memory_SwapBytesUsed

The #of bytes of swap space that are in use (vmstat or /proc/meminfo/SwapFree).

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Constant Field Values

Memory_MinorFaultsPerSec

static final String Memory_MinorFaultsPerSec

Faults that did not require loading a page from disk.

See Also:

IRequiredHostCounters.Memory_majorFaultsPerSecond, Constant Field Values

PhysicalDisk_ReadsPerSec

static final String PhysicalDisk_ReadsPerSec

#of disk read operations per second.

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Constant Field Values

PhysicalDisk_WritesPerSec

static final String PhysicalDisk_WritesPerSec

#of disk write operations per second.

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Constant Field Values

PhysicalDisk_BytesPerSec

static final String PhysicalDisk_BytesPerSec

Disk bytes per second for the host (total of bytes read per second and bytes written per second).

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Constant Field Values

PhysicalDisk_TransfersPerSec

static final String PhysicalDisk_TransfersPerSec

Disk operations per second for the host (total of disk reads per second and disk writes per second).

See Also:

Constant Field Values