elvis@EE.MsState.Edu (surfer) (10/31/90)
'lo, I'm a realatively new SGI/SYS V user, so this is a rather basid performance question. On our 4D/340VGX, we run a mixture of applications, but the main two types are visualization (of large datasets) programs and scientific computation (generating those large datasets) progams. Most of the time we get great performance from our machine; but on ocassion, things go nightmarishly slow. The symptoms (as I've observed them) are: a) MASSIVE amount of swapping-- osview shows over 70% swap wait and large numbers of bytes being swapped in and out. b) no process uses over 20-30% of any cpu for very long (even though several processes might be running which would normally be running constantly at 80%) c) <I think> usage of physical memory is nearing 100% (we have 64Mb) d) response time to user inputs on our visualization software becomes quite poor (normally quite good) This may have already been discussed, but it's really causing me major headaches and I'd like to find out how to salvage some performance for user interaction on the console (and unfortunately, I'm already RTFM'ing quite a few other problems for other things). If you can, please send email copies of your posts to the address shown below. Thanks for all the help. -- Appearing again: -John West- elvis@athena.ee.msstate.edu Engineering Research Center for Computational Field Simulation Mississippi State University ***** National Science Foundation P.O. Drawer EE {Simrall Bldg, Rm 431} (601) 325-8234 (voice) Mississippi State, MS 39762 (601) 325-2298 (fax) .........the opinions presented here are those of the King..........