src/proc_meminfo.c

   1 #include "common.h"
   2
   3 int do_proc_meminfo(int update_every, usec_t dt) {
   4     (void)dt;
   5
   6     static procfile *ff = NULL;
   7     static int do_ram = -1, do_swap = -1, do_hwcorrupt = -1, do_committed = -1, do_writeback = -1, do_kernel = -1, do_slab = -1;
   8
   9     static ARL_BASE *arl_base = NULL;
  10     static ARL_ENTRY *arl_hwcorrupted = NULL;
  11
  12     static unsigned long long
  13             MemTotal = 0,
  14             MemFree = 0,
  15             Buffers = 0,
  16             Cached = 0,
  17             //SwapCached = 0,
  18             //Active = 0,
  19             //Inactive = 0,
  20             //ActiveAnon = 0,
  21             //InactiveAnon = 0,
  22             //ActiveFile = 0,
  23             //InactiveFile = 0,
  24             //Unevictable = 0,
  25             //Mlocked = 0,
  26             SwapTotal = 0,
  27             SwapFree = 0,
  28             Dirty = 0,
  29             Writeback = 0,
  30             //AnonPages = 0,
  31             //Mapped = 0,
  32             //Shmem = 0,
  33             Slab = 0,
  34             SReclaimable = 0,
  35             SUnreclaim = 0,
  36             KernelStack = 0,
  37             PageTables = 0,
  38             NFS_Unstable = 0,
  39             Bounce = 0,
  40             WritebackTmp = 0,
  41             //CommitLimit = 0,
  42             Committed_AS = 0,
  43             //VmallocTotal = 0,
  44             VmallocUsed = 0,
  45             //VmallocChunk = 0,
  46             //AnonHugePages = 0,
  47             //HugePages_Total = 0,
  48             //HugePages_Free = 0,
  49             //HugePages_Rsvd = 0,
  50             //HugePages_Surp = 0,
  51             //Hugepagesize = 0,
  52             //DirectMap4k = 0,
  53             //DirectMap2M = 0,
  54             HardwareCorrupted = 0;
  55
  56     if(unlikely(!arl_base)) {
  57         do_ram          = config_get_boolean("plugin:proc:/proc/meminfo", "system ram", 1);
  58         do_swap         = config_get_boolean_ondemand("plugin:proc:/proc/meminfo", "system swap", CONFIG_ONDEMAND_ONDEMAND);
  59         do_hwcorrupt    = config_get_boolean_ondemand("plugin:proc:/proc/meminfo", "hardware corrupted ECC", CONFIG_ONDEMAND_ONDEMAND);
  60         do_committed    = config_get_boolean("plugin:proc:/proc/meminfo", "committed memory", 1);
  61         do_writeback    = config_get_boolean("plugin:proc:/proc/meminfo", "writeback memory", 1);
  62         do_kernel       = config_get_boolean("plugin:proc:/proc/meminfo", "kernel memory", 1);
  63         do_slab         = config_get_boolean("plugin:proc:/proc/meminfo", "slab memory", 1);
  64
  65         arl_base = arl_create("meminfo", NULL, 60);
  66         arl_expect(arl_base, "MemTotal", &MemTotal);
  67         arl_expect(arl_base, "MemFree", &MemFree);
  68         arl_expect(arl_base, "Buffers", &Buffers);
  69         arl_expect(arl_base, "Cached", &Cached);
  70         //arl_expect(arl_base, "SwapCached", &SwapCached);
  71         //arl_expect(arl_base, "Active", &Active);
  72         //arl_expect(arl_base, "Inactive", &Inactive);
  73         //arl_expect(arl_base, "ActiveAnon", &ActiveAnon);
  74         //arl_expect(arl_base, "InactiveAnon", &InactiveAnon);
  75         //arl_expect(arl_base, "ActiveFile", &ActiveFile);
  76         //arl_expect(arl_base, "InactiveFile", &InactiveFile);
  77         //arl_expect(arl_base, "Unevictable", &Unevictable);
  78         //arl_expect(arl_base, "Mlocked", &Mlocked);
  79         arl_expect(arl_base, "SwapTotal", &SwapTotal);
  80         arl_expect(arl_base, "SwapFree", &SwapFree);
  81         arl_expect(arl_base, "Dirty", &Dirty);
  82         arl_expect(arl_base, "Writeback", &Writeback);
  83         //arl_expect(arl_base, "AnonPages", &AnonPages);
  84         //arl_expect(arl_base, "Mapped", &Mapped);
  85         //arl_expect(arl_base, "Shmem", &Shmem);
  86         arl_expect(arl_base, "Slab", &Slab);
  87         arl_expect(arl_base, "SReclaimable", &SReclaimable);
  88         arl_expect(arl_base, "SUnreclaim", &SUnreclaim);
  89         arl_expect(arl_base, "KernelStack", &KernelStack);
  90         arl_expect(arl_base, "PageTables", &PageTables);
  91         arl_expect(arl_base, "NFS_Unstable", &NFS_Unstable);
  92         arl_expect(arl_base, "Bounce", &Bounce);
  93         arl_expect(arl_base, "WritebackTmp", &WritebackTmp);
  94         //arl_expect(arl_base, "CommitLimit", &CommitLimit);
  95         arl_expect(arl_base, "Committed_AS", &Committed_AS);
  96         //arl_expect(arl_base, "VmallocTotal", &VmallocTotal);
  97         arl_expect(arl_base, "VmallocUsed", &VmallocUsed);
  98         //arl_expect(arl_base, "VmallocChunk", &VmallocChunk);
  99         arl_hwcorrupted = arl_expect(arl_base, "HardwareCorrupted", &HardwareCorrupted);
 100         //arl_expect(arl_base, "AnonHugePages", &AnonHugePages);
 101         //arl_expect(arl_base, "HugePages_Total", &HugePages_Total);
 102         //arl_expect(arl_base, "HugePages_Free", &HugePages_Free);
 103         //arl_expect(arl_base, "HugePages_Rsvd", &HugePages_Rsvd);
 104         //arl_expect(arl_base, "HugePages_Surp", &HugePages_Surp);
 105         //arl_expect(arl_base, "Hugepagesize", &Hugepagesize);
 106         //arl_expect(arl_base, "DirectMap4k", &DirectMap4k);
 107         //arl_expect(arl_base, "DirectMap2M", &DirectMap2M);
 108     }
 109
 110     if(unlikely(!ff)) {
 111         char filename[FILENAME_MAX + 1];
 112         snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/meminfo");
 113         ff = procfile_open(config_get("plugin:proc:/proc/meminfo", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT);
 114         if(unlikely(!ff))
 115             return 1;
 116     }
 117
 118     ff = procfile_readall(ff);
 119     if(unlikely(!ff))
 120         return 0; // we return 0, so that we will retry to open it next time
 121
 122     size_t lines = procfile_lines(ff), l;
 123
 124     arl_begin(arl_base);
 125
 126     for(l = 0; l < lines ;l++) {
 127         size_t words = procfile_linewords(ff, l);
 128         if(unlikely(words < 2)) continue;
 129
 130         if(unlikely(arl_check(arl_base,
 131                 procfile_lineword(ff, l, 0),
 132                 procfile_lineword(ff, l, 1)))) break;
 133     }
 134
 135     RRDSET *st;
 136
 137     // --------------------------------------------------------------------
 138
 139     // http://stackoverflow.com/questions/3019748/how-to-reliably-measure-available-memory-in-linux
 140     unsigned long long MemUsed = MemTotal - MemFree - Cached - Buffers;
 141
 142     if(do_ram) {
 143         st = rrdset_find_localhost("system.ram");
 144         if(!st) {
 145             st = rrdset_create("system", "ram", NULL, "ram", NULL, "System RAM", "MB", 200, update_every, RRDSET_TYPE_STACKED);
 146
 147             rrddim_add(st, "free",    NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 148             rrddim_add(st, "used",    NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 149             rrddim_add(st, "cached",  NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 150             rrddim_add(st, "buffers", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 151         }
 152         else rrdset_next(st);
 153
 154         rrddim_set(st, "free", MemFree);
 155         rrddim_set(st, "used", MemUsed);
 156         rrddim_set(st, "cached", Cached);
 157         rrddim_set(st, "buffers", Buffers);
 158         rrdset_done(st);
 159     }
 160
 161     // --------------------------------------------------------------------
 162
 163     unsigned long long SwapUsed = SwapTotal - SwapFree;
 164
 165     if(SwapTotal || SwapUsed || SwapFree || do_swap == CONFIG_ONDEMAND_YES) {
 166         do_swap = CONFIG_ONDEMAND_YES;
 167
 168         st = rrdset_find_localhost("system.swap");
 169         if(!st) {
 170             st = rrdset_create("system", "swap", NULL, "swap", NULL, "System Swap", "MB", 201, update_every, RRDSET_TYPE_STACKED);
 171             st->isdetail = 1;
 172
 173             rrddim_add(st, "free",    NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 174             rrddim_add(st, "used",    NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 175         }
 176         else rrdset_next(st);
 177
 178         rrddim_set(st, "used", SwapUsed);
 179         rrddim_set(st, "free", SwapFree);
 180         rrdset_done(st);
 181     }
 182
 183     // --------------------------------------------------------------------
 184
 185     if(arl_hwcorrupted->flags & ARL_ENTRY_FLAG_FOUND && (do_hwcorrupt == CONFIG_ONDEMAND_YES || (do_hwcorrupt == CONFIG_ONDEMAND_ONDEMAND && HardwareCorrupted > 0))) {
 186         do_hwcorrupt = CONFIG_ONDEMAND_YES;
 187
 188         st = rrdset_find_localhost("mem.hwcorrupt");
 189         if(!st) {
 190             st = rrdset_create("mem", "hwcorrupt", NULL, "ecc", NULL, "Hardware Corrupted ECC", "MB", 9000, update_every, RRDSET_TYPE_LINE);
 191             st->isdetail = 1;
 192
 193             rrddim_add(st, "HardwareCorrupted", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 194         }
 195         else rrdset_next(st);
 196
 197         rrddim_set(st, "HardwareCorrupted", HardwareCorrupted);
 198         rrdset_done(st);
 199     }
 200
 201     // --------------------------------------------------------------------
 202
 203     if(do_committed) {
 204         st = rrdset_find_localhost("mem.committed");
 205         if(!st) {
 206             st = rrdset_create("mem", "committed", NULL, "system", NULL, "Committed (Allocated) Memory", "MB", 5000, update_every, RRDSET_TYPE_AREA);
 207             st->isdetail = 1;
 208
 209             rrddim_add(st, "Committed_AS", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 210         }
 211         else rrdset_next(st);
 212
 213         rrddim_set(st, "Committed_AS", Committed_AS);
 214         rrdset_done(st);
 215     }
 216
 217     // --------------------------------------------------------------------
 218
 219     if(do_writeback) {
 220         st = rrdset_find_localhost("mem.writeback");
 221         if(!st) {
 222             st = rrdset_create("mem", "writeback", NULL, "kernel", NULL, "Writeback Memory", "MB", 4000, update_every, RRDSET_TYPE_LINE);
 223             st->isdetail = 1;
 224
 225             rrddim_add(st, "Dirty", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 226             rrddim_add(st, "Writeback", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 227             rrddim_add(st, "FuseWriteback", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 228             rrddim_add(st, "NfsWriteback", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 229             rrddim_add(st, "Bounce", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 230         }
 231         else rrdset_next(st);
 232
 233         rrddim_set(st, "Dirty", Dirty);
 234         rrddim_set(st, "Writeback", Writeback);
 235         rrddim_set(st, "FuseWriteback", WritebackTmp);
 236         rrddim_set(st, "NfsWriteback", NFS_Unstable);
 237         rrddim_set(st, "Bounce", Bounce);
 238         rrdset_done(st);
 239     }
 240
 241     // --------------------------------------------------------------------
 242
 243     if(do_kernel) {
 244         st = rrdset_find_localhost("mem.kernel");
 245         if(!st) {
 246             st = rrdset_create("mem", "kernel", NULL, "kernel", NULL, "Memory Used by Kernel", "MB", 6000, update_every, RRDSET_TYPE_STACKED);
 247             st->isdetail = 1;
 248
 249             rrddim_add(st, "Slab", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 250             rrddim_add(st, "KernelStack", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 251             rrddim_add(st, "PageTables", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 252             rrddim_add(st, "VmallocUsed", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 253         }
 254         else rrdset_next(st);
 255
 256         rrddim_set(st, "KernelStack", KernelStack);
 257         rrddim_set(st, "Slab", Slab);
 258         rrddim_set(st, "PageTables", PageTables);
 259         rrddim_set(st, "VmallocUsed", VmallocUsed);
 260         rrdset_done(st);
 261     }
 262
 263     // --------------------------------------------------------------------
 264
 265     if(do_slab) {
 266         st = rrdset_find_localhost("mem.slab");
 267         if(!st) {
 268             st = rrdset_create("mem", "slab", NULL, "slab", NULL, "Reclaimable Kernel Memory", "MB", 6500, update_every, RRDSET_TYPE_STACKED);
 269             st->isdetail = 1;
 270
 271             rrddim_add(st, "reclaimable", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 272             rrddim_add(st, "unreclaimable", NULL, 1, 1024, RRDDIM_ALGORITHM_ABSOLUTE);
 273         }
 274         else rrdset_next(st);
 275
 276         rrddim_set(st, "reclaimable", SReclaimable);
 277         rrddim_set(st, "unreclaimable", SUnreclaim);
 278         rrdset_done(st);
 279     }
 280
 281     return 0;
 282 }
 283