Class MemoryConfiguration
- java.lang.Object
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- org.apache.ignite.configuration.MemoryConfiguration
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- All Implemented Interfaces:
Serializable
@Deprecated public class MemoryConfiguration extends Object implements Serializable
Deprecated.UseDataStorageConfiguration
instead.A page memory configuration for an Apache Ignite node. The page memory is a manageable off-heap based memory architecture that divides all expandable memory regions into pages of fixed size (seegetPageSize()
. An individual page can store one or many cache key-value entries that allows reusing the memory in the most efficient way and avoid memory fragmentation issues.By default, the page memory allocates a single expandable memory region using settings of
createDefaultPolicyConfig()
. All the caches that will be configured in an application will be mapped to this memory region by default, thus, all the cache data will reside in that memory region.If initial size of the default memory region doesn't satisfy requirements or it's required to have multiple memory regions with different properties then
MemoryPolicyConfiguration
can be used for both scenarios. For instance, using memory policies you can define memory regions of different maximum size, eviction policies, swapping options, etc. Once you define a new memory region you can bind particular Ignite caches to it.To learn more about memory policies refer to
MemoryPolicyConfiguration
documentation.Sample configuration below shows how to make 5 GB memory regions the default one for Apache Ignite:
<property name="memoryConfiguration"> <bean class="org.apache.ignite.configuration.MemoryConfiguration"> <property name="systemCacheInitialSize" value="#{100L * 1024 * 1024}"/> <property name="defaultMemoryPolicyName" value="default_mem_plc"/> <property name="memoryPolicies"> <list> <bean class="org.apache.ignite.configuration.MemoryPolicyConfiguration"> <property name="name" value="default_mem_plc"/> <property name="initialSize" value="#{5L * 1024 * 1024 * 1024}"/> </bean> </list> </property> </bean> </property>
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description static String
DFLT_MEM_PLC_DEFAULT_NAME
Deprecated.This name is assigned to default DataRegion if no user-defined default MemPlc is specifiedstatic long
DFLT_MEMORY_POLICY_INITIAL_SIZE
Deprecated.Default memory policy start size (256 MB).static long
DFLT_MEMORY_POLICY_MAX_SIZE
Deprecated.Default memory policy's size is 20% of physical memory available on current machine.static int
DFLT_PAGE_SIZE
Deprecated.Default memory page size.
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Constructor Summary
Constructors Constructor Description MemoryConfiguration()
Deprecated.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description MemoryPolicyConfiguration
createDefaultPolicyConfig()
Deprecated.Creates a configuration for the default memory policy that will instantiate the default memory region.int
getConcurrencyLevel()
Deprecated.Returns the number of concurrent segments in Ignite internal page mapping tables.String
getDefaultMemoryPolicyName()
Deprecated.Gets a name of default memory policy.long
getDefaultMemoryPolicySize()
Deprecated.Gets a size for default memory policy overridden by user.MemoryPolicyConfiguration[]
getMemoryPolicies()
Deprecated.Gets an array of all memory policies configured.int
getPageSize()
Deprecated.The pages memory consists of one or more expandable memory regions defined byMemoryPolicyConfiguration
.long
getSystemCacheInitialSize()
Deprecated.Initial size of a memory region reserved for system cache.long
getSystemCacheMaxSize()
Deprecated.Maximum memory region size reserved for system cache.MemoryConfiguration
setConcurrencyLevel(int concLvl)
Deprecated.Sets the number of concurrent segments in Ignite internal page mapping tables.MemoryConfiguration
setDefaultMemoryPolicyName(String dfltMemPlcName)
Deprecated.Sets the name for the default memory policy that will initialize the default memory region.MemoryConfiguration
setDefaultMemoryPolicySize(long dfltMemPlcSize)
Deprecated.Overrides size of default memory policy which is created automatically.MemoryConfiguration
setMemoryPolicies(MemoryPolicyConfiguration... memPlcs)
Deprecated.Sets memory policies configurations.MemoryConfiguration
setPageSize(int pageSize)
Deprecated.Changes the page size.MemoryConfiguration
setSystemCacheInitialSize(long sysCacheInitSize)
Deprecated.Sets initial size of a memory region reserved for system cache.MemoryConfiguration
setSystemCacheMaxSize(long sysCacheMaxSize)
Deprecated.Sets maximum memory region size reserved for system cache.String
toString()
Deprecated.
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Field Detail
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DFLT_MEMORY_POLICY_INITIAL_SIZE
public static final long DFLT_MEMORY_POLICY_INITIAL_SIZE
Deprecated.Default memory policy start size (256 MB).- See Also:
- Constant Field Values
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DFLT_MEMORY_POLICY_MAX_SIZE
public static final long DFLT_MEMORY_POLICY_MAX_SIZE
Deprecated.Default memory policy's size is 20% of physical memory available on current machine.
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DFLT_PAGE_SIZE
public static final int DFLT_PAGE_SIZE
Deprecated.Default memory page size.- See Also:
- Constant Field Values
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DFLT_MEM_PLC_DEFAULT_NAME
public static final String DFLT_MEM_PLC_DEFAULT_NAME
Deprecated.This name is assigned to default DataRegion if no user-defined default MemPlc is specified- See Also:
- Constant Field Values
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Method Detail
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getSystemCacheInitialSize
public long getSystemCacheInitialSize()
Deprecated.Initial size of a memory region reserved for system cache.- Returns:
- Size in bytes.
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setSystemCacheInitialSize
public MemoryConfiguration setSystemCacheInitialSize(long sysCacheInitSize)
Deprecated.Sets initial size of a memory region reserved for system cache. Default value isDFLT_SYS_CACHE_INIT_SIZE
- Parameters:
sysCacheInitSize
- Size in bytes.- Returns:
this
for chaining.
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getSystemCacheMaxSize
public long getSystemCacheMaxSize()
Deprecated.Maximum memory region size reserved for system cache.- Returns:
- Size in bytes.
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setSystemCacheMaxSize
public MemoryConfiguration setSystemCacheMaxSize(long sysCacheMaxSize)
Deprecated.Sets maximum memory region size reserved for system cache. The total size should not be less than 10 MB due to internal data structures overhead.- Parameters:
sysCacheMaxSize
- Maximum size in bytes for system cache memory region.- Returns:
this
for chaining.
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getPageSize
public int getPageSize()
Deprecated.The pages memory consists of one or more expandable memory regions defined byMemoryPolicyConfiguration
. Every memory region is split on pages of fixed size that store actual cache entries.- Returns:
- Page size in bytes.
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setPageSize
public MemoryConfiguration setPageSize(int pageSize)
Deprecated.Changes the page size. Default value isDFLT_PAGE_SIZE
- Parameters:
pageSize
- Page size in bytes.- Returns:
this
for chaining.
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getMemoryPolicies
public MemoryPolicyConfiguration[] getMemoryPolicies()
Deprecated.Gets an array of all memory policies configured. Apache Ignite will instantiate a dedicated memory region per policy. An Apache Ignite cache can be mapped to a specific policy withCacheConfiguration.setMemoryPolicyName(String)
method.- Returns:
- Array of configured memory policies.
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setMemoryPolicies
public MemoryConfiguration setMemoryPolicies(MemoryPolicyConfiguration... memPlcs)
Deprecated.Sets memory policies configurations.- Parameters:
memPlcs
- Memory policies configurations.- Returns:
this
for chaining.
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createDefaultPolicyConfig
public MemoryPolicyConfiguration createDefaultPolicyConfig()
Deprecated.Creates a configuration for the default memory policy that will instantiate the default memory region. To override settings of the default memory policy in order to create the default memory region with different parameters, create own memory policy first, pass it tosetMemoryPolicies(MemoryPolicyConfiguration...)
method and change the name of the default memory policy withsetDefaultMemoryPolicyName(String)
.- Returns:
- default Memory policy configuration.
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getConcurrencyLevel
public int getConcurrencyLevel()
Deprecated.Returns the number of concurrent segments in Ignite internal page mapping tables. By default equals to the number of available CPUs multiplied by 4.- Returns:
- Mapping table concurrency level.
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setConcurrencyLevel
public MemoryConfiguration setConcurrencyLevel(int concLvl)
Deprecated.Sets the number of concurrent segments in Ignite internal page mapping tables.- Parameters:
concLvl
- Mapping table concurrency level.- Returns:
this
for chaining.
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getDefaultMemoryPolicySize
public long getDefaultMemoryPolicySize()
Deprecated.Gets a size for default memory policy overridden by user.- Returns:
- Default memory policy size overridden by user or
DFLT_MEMORY_POLICY_MAX_SIZE
if nothing was specified.
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setDefaultMemoryPolicySize
public MemoryConfiguration setDefaultMemoryPolicySize(long dfltMemPlcSize)
Deprecated.Overrides size of default memory policy which is created automatically. If user doesn't specify any memory policy configuration, a default one with default size (20% of available RAM) is created by Ignite. This property allows user to specify desired size of default memory policy without having to use more verbose syntax of MemoryPolicyConfiguration elements.- Parameters:
dfltMemPlcSize
- Size of default memory policy overridden by user.- Returns:
this
for chaining.
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getDefaultMemoryPolicyName
public String getDefaultMemoryPolicyName()
Deprecated.Gets a name of default memory policy.- Returns:
- A name of a custom memory policy configured with
MemoryConfiguration
ornull
of the default policy is used.
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setDefaultMemoryPolicyName
public MemoryConfiguration setDefaultMemoryPolicyName(String dfltMemPlcName)
Deprecated.Sets the name for the default memory policy that will initialize the default memory region. To set own default memory policy, create the policy first, pass it tosetMemoryPolicies(MemoryPolicyConfiguration...)
method and change the name of the default memory policy withMemoryConfiguration#setDefaultMemoryPolicyName(String)
. If nothing is specified by user, it is set toDFLT_MEM_PLC_DEFAULT_NAME
value.- Parameters:
dfltMemPlcName
- Name of a memory policy to be used as default one.- Returns:
this
for chaining.
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