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Teiid Performance Tuning - Memory Management Examples

Posted by Kylin Soong on Jul 23, 2015 categorized as teiid

As Teiid Memory Management, the BufferManager is responsible for tracking both memory and disk usage by Teiid. Configuring the BufferManager properly is one of the most important parts of ensuring high performance.

This article including a series of Q/A, or examples, can be thought of a supplement of Teiid Memory Management document.

Teiid Memory Management Q/A

1. What’s the prossible properties use to configure BufferManager? and how to implement?

All the properties that start with “buffer-service” used to configure BufferManager, it including:

  • useDisk
  • encryptFiles
  • processorBatchSize
  • maxOpenFiles
  • maxFileSize
  • maxProcessingKb
  • maxReserveKb
  • maxBufferSpace
  • inlineLobs
  • memoryBufferSpace
  • maxStorageObjectSize
  • memoryBufferOffHeap

Read these properties via CLI command:

/subsystem=teiid:read-attribute(name=buffer-service-use-disk)
/subsystem=teiid:read-attribute(name=buffer-service-encrypt-files)
/subsystem=teiid:read-attribute(name=buffer-service-processor-batch-size)
/subsystem=teiid:read-attribute(name=buffer-service-max-open-files)
/subsystem=teiid:read-attribute(name=buffer-service-max-file-size)
/subsystem=teiid:read-attribute(name=buffer-service-max-processing-kb)
/subsystem=teiid:read-attribute(name=buffer-service-max-reserve-kb)
/subsystem=teiid:read-attribute(name=buffer-service-max-buffer-space)
/subsystem=teiid:read-attribute(name=buffer-service-inline-lobs)
/subsystem=teiid:read-attribute(name=buffer-service-memory-buffer-space)
/subsystem=teiid:read-attribute(name=buffer-service-max-storage-object-size)
/subsystem=teiid:read-attribute(name=buffer-service-memory-buffer-off-heap)

Write this properties via CLI command:

/subsystem=teiid:write-attribute(name=buffer-service-use-disk,value=true)
/subsystem=teiid:write-attribute(name=buffer-service-encrypt-files,value=false)
/subsystem=teiid:write-attribute(name=buffer-service-processor-batch-size,value=256)
/subsystem=teiid:write-attribute(name=buffer-service-max-open-files,value=64)
/subsystem=teiid:write-attribute(name=buffer-service-max-file-size,value=2048)
/subsystem=teiid:write-attribute(name=buffer-service-max-processing-kb,value=-1)
/subsystem=teiid:write-attribute(name=buffer-service-max-reserve-kb,value=-1)
/subsystem=teiid:write-attribute(name=buffer-service-max-buffer-space,value=51200)
/subsystem=teiid:write-attribute(name=buffer-service-max-inline-lobs,value=true)
/subsystem=teiid:write-attribute(name=buffer-service-memory-buffer-space,value=-1)
/subsystem=teiid:write-attribute(name=buffer-service-max-storage-object-size,value=8388608)
/subsystem=teiid:write-attribute(name=buffer-service-memory-buffer-off-heap,value=true）