Yes, and it also assumes that the system administrator hasn't taken steps to minimize this. Such as, reducing the amount of virtual storage allocated to the instance, and adding a v-disk as a paging device. Putting "pressure" on the storage use algorithms will reduce the amount used for buffering and cache, so only frequently used things will remain in storage.
Mark Post -----Original Message----- From: James Melin [mailto:[EMAIL PROTECTED]] Sent: Thursday, April 25, 2002 11:10 AM To: [EMAIL PROTECTED] Subject: Re: LinuxWorld Article series This assumes that every Linux image is going to be using the same disk, does it not? |---------+----------------------------------> | | Barton Robinson | | | <[EMAIL PROTECTED]| | | FTWARE.COM> | | | Sent by: Linux on 390 | | | Port | | | <[EMAIL PROTECTED]| | | U> | | | | | | | | | 04/25/2002 09:48 AM | | | Please respond to Linux| | | on 390 Port | | | | |---------+----------------------------------> >--------------------------------------------------------------------------- -----------------------------------| | | | To: [EMAIL PROTECTED] | | cc: | | Subject: Re: LinuxWorld Article series | >--------------------------------------------------------------------------- -----------------------------------| The author is correct. This has NOT been addressed for Linux on zSeries. >From: Werner Puschitz <[EMAIL PROTECTED]> > >Is the author right on this: > >http://www.linuxworld.com/site-stories/2002/0416.mainframelinux-p7.html >"Linux memory management assumes control of a machine and so grabs up >free memory for use in I/O buffering. Having multiple Linux instances do >this to independently buffer I/O to the same files resident on a shared >mini-disk not only wastes memory, but dramatically increases the paging >effort." > >Or has this already been addressed for Linux on zSeries? > >Thanks >Werner "If you can't measure it, I'm Just NOT interested!"(tm) /************************************************************/ Barton Robinson - CBW Internet: [EMAIL PROTECTED] Velocity Software, Inc Mailing Address: 196-D Castro Street P.O. Box 390640 Mountain View, CA 94041 Mountain View, CA 94039-0640 VM Performance Hotline: 650-964-8867 Fax: 650-964-9012 Web Page: WWW.VELOCITY-SOFTWARE.COM /************************************************************/
