I do but its in production as a xenserver... when we migrate the VM's off of it ill have some time to do this experiment. On Thu, Dec 3, 2009 at 7:30 PM, Bob Elzer wrote: > What about a large database maybe a couple of terabytes, and maybe lots of > users. > > And then lets say we spread our 6GB of swap over several disks. > > Maybe a system with 32GB of memory, and dual quad processors. > > Maybe we could run some tests, anybody have a system like this ??? > > What does ebay and amazon and new egg run on, I heard they were doing lots > of processing for black Friday ? > > Well maybe. > > > > -----Original Message----- > From: plug-discuss-bounces@lists.plug.phoenix.az.us > [mailto:plug-discuss-bounces@lists.plug.phoenix.az.us] On Behalf Of Kurt > Granroth > Sent: Thursday, December 03, 2009 5:06 PM > To: plug-discuss@lists.plug.phoenix.az.us > Subject: Re: FLASH disk as swap > > On 12/3/09 9:39 AM, der.hans wrote: >> Having swap be 1.5 times the size of ram is good, double the size of >> ram is better. > > Those are old-school heuristics from back in the day when 32 MB was a lot of > RAM.  I stretch to think of a case where 6-8 GB of swap would come into play > at *all*.  That is, if you have a case where the system is using multi-gig > amounts of swap, then I can almost guarantee that it is utterly unusable. > One could say that it's there as a "just-in-case"... but I'm having a hard > time buying that.  Unusable is unusable.  It would take so incredibly long > to recover that any production server would have long been rebooted or > managed some other way. > > I think I did 2x RAM up until I had 512MB and then 1x RAM until I got to > 1GB.  Then I was .5x at 2GB RAM and finally .25x now ;-) > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > To subscribe, unsubscribe, or to change your mail settings: > http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > To subscribe, unsubscribe, or to change your mail settings: > http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss > -- A mouse trap, placed on top of your alarm clock, will prevent you from rolling over and going back to sleep after you hit the snooze button. Stephen --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us To subscribe, unsubscribe, or to change your mail settings: http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss