Hi,
blocksize in aix is 4k by default, not 512 byte.
And read ahead can be controlled by aix kernel parameter. If you really want to
bypass aix filesystem read ahead, just change the kernel parameter dynamically. (I
cannot remember the detailed kernel parameter, maybe min/maxpgahead
, October 01, 2003 4:24 AM
To: Multiple recipients of list ORACLE-L
Subject: blocksize on AIX
Hi all,
I've read on ixora.com.au and other sites that the optimal block size for
AIX is 4K, because JFS pages are 4K also.
Has anyone of you ever experienced performance problems on AIX due
Hi all,
I've read on ixora.com.au and other sites that the optimal block size for
AIX is 4K, because JFS pages are 4K also.
Has anyone of you ever experienced performance problems on AIX due to a
larger blocksize? What exactly are the 'read ahead' issues and cpu problems
regarding double
I've read on ixora.com.au and other sites that the optimal block size for
AIX is 4K, because JFS pages are 4K also.
Isn't JFS block size changeable?
Has anyone of you ever experienced performance problems on AIX due to a
larger blocksize? What exactly are the 'read ahead' issues and cpu
