RE: db_file_multiblock_read_count causing full scans to takelonger?

  • From: "Kevin Closson" <kevinc@xxxxxxxxxxxxx>
  • To: <oracle-l@xxxxxxxxxxxxx>
  • Date: Tue, 19 Dec 2006 15:47:54 -0800

>>>at that point, but I would expect the difference to occur at 
>>>257k, not 256k - and I wouldn't expect it to be such a big 
>>>difference.  You'd think HPUX could split up the larger read 
>>>requests into 255k chunks a little more efficiently than that.
>>>I'll check on a couple more AIX and HPUX systems and see if 
>>>they exhibit the same behavior too.

Again, are we talking FS or Direct I/O with these cases where
greater than 255KB seems to cause big problems? 
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