On Thu, Apr 24, 2008 at 05:00:51PM -0400, Patrick Ouellette wrote: > On Thu, Apr 24, 2008 at 04:45:05PM -0400, Damon L. Chesser wrote: > > > > Being in an interview loop looking for employment, I find I am asked > > questions I never considered, for example: How much is enough swap? > > > > Rephrase the question. Ask what the intended use of the machine is, > what response times the users expect, how much real RAM is there, and > what applications/services will run off the machine. > > Then tell the interviewer how each parameter you've asked about would > influence your decision on how much swap was enough. > > How much is enough? As much as the system needs to run and not kill > processes due to lack of memory (real + swap). > > I've run machines with 1Gig or more RAM with NO SWAP. I've also run > machines with 4Gig of RAM and 16Gig of swap (BIG datasets).
IIRC, historically, the 2X ram thing comes from UNIX where in the event of a crash, a crash-dump of memory goes into the swap partition, also UNIX does/did heavy paging out of pieces of idle software to free up memory for use by running progams, much more agressively than Linux. Doug. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
