Quoting James Cuff (james@sanger.ac.uk): > This actually got me to thinking about the Linux software based RAID 0 > sets that we have been using in our current blade evaluations (I'm planing > to report all our findings to the list once the bake offs are complete - > infact ChrisD will probably hold me to it... :->). I'm also very intrested in it, as we are doing some benchmarks using (I think) the same blades. Does anyone on this list know how to evaluate the memory usage of a program running under Linux. We have a program that runs a long time (days) and has a pretty big VmSize (~1.8 GB). Much to our surprise this runs pretty well on a 512MB machine (VmRSS around 300000 KB), although the authors of the code claimed that the code does access all the memory it has requested for (in a semi-random way). I have looked at graphs of VmSize and VmRSS vs. time and output of sar (~5 pages per sec paged in / out ). Any other things I might look at and give me an idea about which parts of the memory of the program are accessed and how often ? Kris,