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Conference aosg::lsm

Title:	LSM

Moderator:	SMURF::SHIDERLY

Created:	Mon Jan 17 1994
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	803
Total number of notes:	2852

763.0. "LSM I/O transfer size." by SALEM::ARNOLD () Fri Mar 07 1997 05:34

    I was told that oracle 7.3 was able to support 128k reads and writes
    to a file system.  With that in mine we tried to increase the read
    and write size on our advfs volumes using chvol and it failed.
    The failure was the same as is mention in note 531.  It seems that
    LSM is only supporting I/O transfer sizes of 64k.  Is this correct?
    Or is there a way to set it.  We are running 4.0A with oracle 7.3.
    
    Thanks for any help that can be provided.
    
    Howard

T.R Title User Personal
Name Date Lines

763.1 KITCHE::schott Eric R. Schott USG Product Management Sun Mar 09 1997 09:09 9

T.R	Title	User	Personal Name	Date	Lines
763.1		KITCHE::schott	Eric R. Schott USG Product Management	`Sun Mar 09 1997 09:09`	9
	look at the volinfo structure in the kernel... specifically the max_io field...I think it is set to 64KB (128 512 blocks) by default. You should ensure the disks/controllers you are using can deal with this (for all disks in use by lsm)

look at the volinfo structure in the kernel...

specifically the max_io field...I think it is set
to 64KB (128 512 blocks) by default.

You should ensure the disks/controllers you are using can deal with
this (for all disks in use by lsm)