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What's better: ASMlib or RAW...

From: oracle_man <oracle_man_at_yahoo.com>
Date: 10 May 2007 22:19:14 -0700
Message-ID: <1178860754.366501.278460@o5g2000hsb.googlegroups.com> 





Call to arms:




I:  What is the better choice on x86_64,RHEL4u4(2.6x kernel),  EMC
CX300 SAN, EMC powerpath 4.5x, Oracle 10.2.0.3.0, RAC, ASM?



    
  
  1.   ASMlib accessing block dev, asynch i/o
  
  2.   Raw device access via /dev/raw/rawX






II:  Which i/o scheduler do you use with each respective technology
stack?



    
  
  1.   CFQ

  
  2.   Deadline
  
  3.   No-OP
  
  4.   Anticipator






III:  Last question:  Which parameter do you use for the above?



    
  
  1.   DISK_ASYNCH_IO

  
  2.   FILESYSTEMIO_OPTIONS




Received on Fri May 11 2007 - 00:19:14 CDT












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