Hi Jesper; On Sun, 2008-04-27 at 19:20 +0200, Jesper Juhl wrote: > 2008/4/27 William Case <billlinux@xxxxxxxxxx>: > > Hi; > > > > I am not sure I am posing this question correctly, so please view it > > from the perspective of where I am trying to get to. > > > > I have recently taken up the "kernel" challenge. > > > > The text books I have all show a schematic of memory organization. > > First BIOS; Next kernel space; then user space; with various > > subdivisions within each space. > > > > Is there a program I can download, or by using sysfs, procfs a way, that > > lets me catch a snapshot of what my entire memory looks like -- address > > by address grouping (block)-- with some type of labels for each grouping > > (block)? I am willing to build a diagram for myself, if I can be > > assured that some strategy will give me everything. > > > > Even if it is a lot of data, it is a, sort of, one time thing. More in > > the seeing-is-believing line of thought than anything else. > > I'm not sure this is all you want/need, but perhaps it is :) > > There is > cat /proc/meminfo > > And also > cat /proc/vmstat > > Then there's the slabinfo tool which can also show a lot of details: > juhl@dragon:~/kernel/linux-2.6$ gcc -o slabinfo Documentation/vm/slabinfo.c > juhl@dragon:~/kernel/linux-2.6$ ./slabinfo -h > slabinfo 5/7/2007. (c) 2007 sgi. clameter@xxxxxxx > > slabinfo [-ahnpvtsz] [-d debugopts] [slab-regexp] > -a|--aliases Show aliases > -A|--activity Most active slabs first > -d<options>|--debug=<options> Set/Clear Debug options > -D|--display-active Switch line format to activity > -e|--empty Show empty slabs > -f|--first-alias Show first alias > -h|--help Show usage information > -i|--inverted Inverted list > -l|--slabs Show slabs > -n|--numa Show NUMA information > -o|--ops Show kmem_cache_ops > -s|--shrink Shrink slabs > -r|--report Detailed report on single slabs > -S|--Size Sort by size > -t|--tracking Show alloc/free information > -T|--Totals Show summary information > -v|--validate Validate slabs > -z|--zero Include empty slabs > -1|--1ref Single reference > > Valid debug options (FZPUT may be combined) > a / A Switch on all debug options (=FZUP) > - Switch off all debug options > f / F Sanity Checks (SLAB_DEBUG_FREE) > z / Z Redzoning > p / P Poisoning > u / U Tracking > t / T Tracing > > Lots of details can also be found in various files in /sys/kernel/slab/ > > Hope that helps :) > I think it will. It will take me a few days to climb into it, but I suspect everything I want to learn and see will be there. I had used cat /proc/meminfo but not cat /proc/vmstat nor /proc/slabinfo. -- Regards Bill -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
