hi, the redhat rule of thumb is: 1. for RAM < 2G, 256MB < SWAP = 2RAM 2. for RAM > 2G, SWAP = 4 + (RAM-2), in your case SWAP=4+(12-2)=14G 3. SWAP partition<2G so for 14G SWAP, you need 7*2G swaps, i.e. you need 7 partitions of 2G each. cheng --- Steven Jones <Steven.Jones@xxxxxxxxx> wrote: > > > > What is the swap space recommended for > > > RH Enterprise 3 for 12G of memory. Currently we > are using 4G. > > Depends on the core dump. If you have 12 gig of ram > and do a core dump > and it fills the dump partition the machine may not > reboot properly. > > For normal running I would suggest 1 or 2 gig of > swap is heaps, in > reality if you use more than 500meg you are usually > screwed anyway. > > > > > > > The app is an LSAP system > 6G of data, > > > > > > JYard > > > UCLA > > > The Rule of Thumb is normaly 1.5 - 2 times the > physical amount of ram. > that its was they tall you > > So in your case 18 - 24g of swap. > Thats its very stupid. > > I tend to agree. > > This rule of thumb was current when a machine had 32 > or 64meg of main > ram, it has little justification these days IMHO. > > why waste so much disk in something not worthy? > I always says if you have a lot of RAM because you > need it (Big DB) and > you start to use to much swap (>512) better buy more > RAM. > > I would check to see if your app requires that > much ram. > as far as i know, there is not such thing like "much > ram". > > My only concern is the core/kcore, I have had cores > 100% a partition and > the machine is then unstable. Advice off the > application vendor might be > useful, but from experience the helpdesk people you > will talk to will > not really know. > > Regards > > Thing > > > -- > redhat-list mailing list > unsubscribe > mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > Best wishes Z C Wang Send instant messages to your online friends http://uk.messenger.yahoo.com -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
