Actually that is not the Oracle recommendations. The current 11g guidelines call for a fixed 16GB swap size if the RAM is greater then 16GB. http://download.oracle.com/docs/cd/B28359_01/install.111/b32002/pre_install.htm#CHDCEBFF
Singer On Wed, Apr 20, 2011 at 09:38, Adam Tauno Williams < [email protected]> wrote: > On Wed, 2011-04-20 at 06:25 -0700, Andrew Hume wrote: > > i know, i know. this is an old chestnut. > > we used to have swap 2-3x main memory, > > but nowadays the wisdom is that that old rule > > is no longer applicable. (this is on RHE5.) > > so here i am, with a 128GB memory system with 16GB of swap. > > and here i am, killing the system by running it out of swap. > > my observation is that if i have large memory, i will use it. > > (to say nothing of memory leaks etc.) > > and if i have a few multiple large memory processes, > > why wouldn't i want swap sized at 2-3x memory? > > Most recommendations I see [in professional notes and documentation, not > general Internet-swill] point to SWAP = 0.75 * RAM for systems with > more than 8 GB of memory. This is the RHEL & Oracle recommandations at > least, but I've seen it other places. > > You also might get some benefit from playing with the > /proc/sys/vm/swappiness value. > -- > Adam Tauno Williams <[email protected]> LPIC-1, Novell CLA > <http://www.whitemiceconsulting.com> > OpenGroupware, Cyrus IMAPd, Postfix, OpenLDAP, Samba > > _______________________________________________ > Tech mailing list > [email protected] > https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech > This list provided by the League of Professional System Administrators > http://lopsa.org/ > -- The best compliment you could give Pythian for our service is a referral.
_______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
