diff options
Diffstat (limited to 'swap.c')
| -rw-r--r-- | swap.c | 78 |
1 files changed, 78 insertions, 0 deletions
@@ -0,0 +1,78 @@ +#include <string.h> +#include <stdio.h> +#include <unistd.h> +#include "common.h" + +int swap(int argc, char **argv) { + FILE *f; + char buff[256]; + int in, out; + if(argc > 1) { + if(!strcmp(argv[1], "config")) { + puts("graph_title Swap in/out\n" + "graph_args -l 0 --base 1000\n" + "graph_vlabel pages per ${graph_period} in (-) / out (+)\n" + "graph_category system\n" + "swap_in.label swap\n" + "swap_in.type DERIVE\n" + "swap_in.max 100000\n" + "swap_in.min 0\n" + "swap_in.graph no\n" + "swap_out.label swap\n" + "swap_out.type DERIVE\n" + "swap_out.max 100000\n" + "swap_out.min 0\n" + "swap_out.negative swap_in"); + + return 0; + } + if(!strcmp(argv[1], "autoconf")) { + if(0 == access("/proc/stat", R_OK)) + return writeyes(); + else + return writeno("/proc/stat not readable"); + } + } + if(!access("/proc/vmstat", F_OK)) { + in=out=0; + if(!(f=fopen("/proc/vmstat", "r"))) { + fputs("cannot open /proc/vmstat\n", stderr); + return 1; + } + while(fgets(buff, 256, f)) { + if(!in && !strncmp(buff, "pswpin ", 7)) { + ++in; + printf("swap_in.value %s", buff+7); + } + else if(!out && !strncmp(buff, "pswpout ", 8)) { + ++out; + printf("swap_out.value %s", buff+8); + } + } + fclose(f); + if(!in*out) { + fputs("no usable data on /proc/vmstat\n", stderr); + return 1; + } + return 0; + } else { + if(!(f=fopen("/proc/stat", "r"))) { + fputs("cannot open /proc/stat\n", stderr); + return 1; + } + while(fgets(buff, 256, f)) { + if(!strncmp(buff, "swap ", 5)) { + fclose(f); + if(2 != sscanf(buff+5, "%d %d", &in, &out)) { + fputs("bad data on /proc/stat\n", stderr); + return 1; + } + printf("swap_in.value %d\nswap_out.value %d\n", in, out); + return 0; + } + } + fclose(f); + fputs("no swap line found in /proc/stat\n", stderr); + return 1; + } +} |