Package com.streambase.sb.monitor

Class SystemInfo

java.lang.Object

com.streambase.sb.monitor.SystemInfo

public class SystemInfo
extends Object

Represents system-level information. Instances of this class should be retrieved from a Snapshot.

See Also:

Snapshot

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SystemInfo.GCInfo	Information about GC collectors in the JVM

Constructor Summary

Constructors

Constructor	Description
SystemInfo()

Method Summary

Modifier and Type	Method	Description
protected void	extractGCInfo(String name, StatTuplev3 st)
int	getClientCount()	Returns the current number of clients
int	getDequeueClientCount()	Returns the current number of dequeuing clients
long	getFreeMemory()	Returns the amount of free memory in the StreamBase server process.
Collection<SystemInfo.GCInfo>	getGCollectors()	Return a collection of information on all the garbage collectors in the JVM
long	getMaxMemory()	Returns the maximum amount of memory which the StreamBase server process is allowed to allocate.
int	getProcessSize()	Deprecated. As of StreamBase 3.0, use getTotalMemory(), which returns a size in bytes.
int	getTimeRunning()	Returns the time that the StreamBase Server has been running, in seconds.
long	getTotalMemory()	Returns the total amount of memory available for use in the StreamBase server process.
int	getTotalNumberThreads()	Return the total number of threads running in the JVM (including non-StreamBase threads)
long	getUsedMemory()	Returns the total amount of memory currently in use in the StreamBase server process.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SystemInfo

public SystemInfo()

Method Detail

extractGCInfo

protected void extractGCInfo(String name,
                             StatTuplev3 st)

getTimeRunning

public int getTimeRunning()

Returns the time that the StreamBase Server has been running, in seconds.

Returns:

the seconds that sbd has been running

getProcessSize

public int getProcessSize()

Deprecated.

As of StreamBase 3.0, use getTotalMemory(), which returns a size in bytes.

Returns the amount of memory used by the StreamBase server process, in Megabytes.

Returns:

size of the server process, in Mbytes

getTotalMemory

public long getTotalMemory()

Returns the total amount of memory available for use in the StreamBase server process.

Returns:

the amount of memory, in bytes

getUsedMemory

public long getUsedMemory()

Returns the total amount of memory currently in use in the StreamBase server process.

Returns:

the amount of memory, in bytes

getFreeMemory

public long getFreeMemory()

Returns the amount of free memory in the StreamBase server process.

Returns:

the amount of memory, in bytes

getMaxMemory

public long getMaxMemory()

Returns the maximum amount of memory which the StreamBase server process is allowed to allocate.

Returns:

the amount of memory, in bytes

getDequeueClientCount

public int getDequeueClientCount()

Returns the current number of dequeuing clients

Returns:

the number of dequeueing clients

getClientCount

public int getClientCount()

Returns the current number of clients

Returns:

the number of clients

getTotalNumberThreads

public int getTotalNumberThreads()

Return the total number of threads running in the JVM (including non-StreamBase threads)

Returns:

total number of threads running in the JVM (including non-StreamBase threads)

getGCollectors

public Collection<SystemInfo.GCInfo> getGCollectors()

Return a collection of information on all the garbage collectors in the JVM

Returns:

A collection of information on all the garbage collectors in the JVM

Since:

7.1.0