问分析linux内核使用的内存

EN

#include <sys/sysinfo.h>

int main(int argc, char **argv){
struct sysinfo info;
sysinfo(&info);
printf(     "UPTIME_SECONDS=%d\n"
        "LOAD_1MIN=%d\n"
        "LOAD_5MIN=%d\n"
        "LOAD_15MIN=%d\n"
        "RAM_TOT=%d\n"
        "RAM_FREE=%d\n"
        "MEMUSEDKB=%d\n"
        "RAM_SHARED=%d\n"
        "RAM_BUFFERS=%d\n"
        "SWAP_TOT=%d\n"
        "SWAP_FREE=%d\n"
        "PROCESSES=%d\n",
        info.uptime,
        info.loads[0],
        info.loads[1],
        info.loads[2],
        info.totalram,
        info.freeram,
        (info.totalram-info.freeram)*info.mem_unit/1024,
        info.sharedram,
        info.bufferram,
        info.totalswap,
        info.freeswap,
        info.procs);
}

eval `sysinfo`
BEFORERAM=$MEMUSEDKB
command &
sleep .1 #sleep value may need to be adjusted depending on command's run time
eval `sysinfo`
AFTERRAM=$MEMUSEDKB
echo RAMDELTA is $(($AFTERRAM - BEFORERAM ))