> One question that I currently have is how we interpret the > "TOP" command in Linux when running Linux on the Mainframe on > an Lpar. E.g. If we allocate 1GB of memory to that lpar, the > TOP command show that memory allocated is 1GB and memory used > is very close to 1GB. There is only a few users logged in. I > just wonder what will happen if we let users start using the > application. Is this memory ging to cater for these users?
It's going to try, but on the bare metal, you've not got very many good options. Application memory usage will press the amout of RAM used for buffers, and the system will try to balance application storage with buffer storage as best it can. At some point, it's going to swap hard, and you don't have any paging hierarchy in Linux to cushion the impact unless you allocate expanded storage to the LPAR and use the xpram driver as your first swap disk, then a LOT of physical disks (multiple small volumes are better). 1GB is a lot of really expensive RAM. Post the top 10 lines of your top output, and that'll tell us a lot more about what's happening. > What tools do we use to keep stats if running Linux on an > Lpar, not under VM? Many of the tools and scripts discussed in the "accounting and monitoring for Linux under z/VM" redpaper also apply to LPAR mode (the parts that collect data inside Linux are fairly useful). top, sar, etc do produce useful data in LPARs. > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
