PLEASE PROVIDE A SUBJECT LINE of relevance.... I almost ignored this and have no idea the original thread.
Isn't the problem with dcss is that they are very limited? They must be less than 2GB in address - pretty hard to have a 5GB pages space fit below 2gb virtual. Lots of virtual machines already pushing way above 2gb now, i need a consistent approach. So for oracle, sap, weblogic, informix, i can't use dcss for paging. And are the rules for paging out vdisk different than for dcss? The issue with vdisk is that cp considers a dedicated vdisk as "shared" so is slow to page it out. That could be fixed but paging out dcss seems slower now than for vdisk. So i think real storage will be more constrained using dcss for paging than using vdisk. except of course for the ibm benchmark machines with over configured storage so that would not be detected in lab measurements but would be of great concern in real life??? >Date: Thu, 18 Nov 2004 14:13:27 +0100 >From: Carsten Otte <[EMAIL PROTECTED]> > >On Nov 17, 2004, at 10:32 AM, Carsten Otte wrote: >>> You might as well be interrested in our DCSS execute-in-place >>> filesystem. >>> This one allows you to put your >>> applications and shared libraries in DCSS segments, and they can be >>> used/executed on individual guests >>> without copying into virtual guest storage. >>> >>Hasn't Rob van der Heij also shown that swap in EW segments is even >>faster than swap-on-vdisk? I haven't tried this yet but it ought to be >>fairly straightforward to set up at boot time. > >Yea, you're telling me news I told Rob before [circle closed]. >The point is: I do not recommend it to customers until we are >done testing. But looks to be very much faster than vdisk >indeed. > >with kind regards >Carsten Otte "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 /************************************************************/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
