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_BOOLEAN_AUTO);
  59         do_hwcorrupt    = config_get_boolean_ondemand("plugin:proc:/proc/meminfo", "hardware corrupted ECC", CONFIG_BOOLEAN_AUTO);
  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_localhost("system", "ram", NULL, "ram", NULL, "System RAM", "MB", 200, update_every
 146                                          , RRDSET_TYPE_STACKED);
 147
 148             rrddim_add(st, "free",    NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 149             rrddim_add(st, "used",    NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 150             rrddim_add(st, "cached",  NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 151             rrddim_add(st, "buffers", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 152         }
 153         else rrdset_next(st);
 154
 155         rrddim_set(st, "free", MemFree);
 156         rrddim_set(st, "used", MemUsed);
 157         rrddim_set(st, "cached", Cached);
 158         rrddim_set(st, "buffers", Buffers);
 159         rrdset_done(st);
 160     }
 161
 162     // --------------------------------------------------------------------
 163
 164     unsigned long long SwapUsed = SwapTotal - SwapFree;
 165
 166     if(SwapTotal || SwapUsed || SwapFree || do_swap == CONFIG_BOOLEAN_YES) {
 167         do_swap = CONFIG_BOOLEAN_YES;
 168
 169         st = rrdset_find_localhost("system.swap");
 170         if(!st) {
 171             st = rrdset_create_localhost("system", "swap", NULL, "swap", NULL, "System Swap", "MB", 201, update_every
 172                                          , RRDSET_TYPE_STACKED);
 173             rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
 174
 175             rrddim_add(st, "free",    NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 176             rrddim_add(st, "used",    NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 177         }
 178         else rrdset_next(st);
 179
 180         rrddim_set(st, "used", SwapUsed);
 181         rrddim_set(st, "free", SwapFree);
 182         rrdset_done(st);
 183     }
 184
 185     // --------------------------------------------------------------------
 186
 187     if(arl_hwcorrupted->flags & ARL_ENTRY_FLAG_FOUND && (do_hwcorrupt == CONFIG_BOOLEAN_YES || (do_hwcorrupt == CONFIG_BOOLEAN_AUTO && HardwareCorrupted > 0))) {
 188         do_hwcorrupt = CONFIG_BOOLEAN_YES;
 189
 190         st = rrdset_find_localhost("mem.hwcorrupt");
 191         if(!st) {
 192             st = rrdset_create_localhost("mem", "hwcorrupt", NULL, "ecc", NULL, "Hardware Corrupted ECC", "MB", 9000
 193                                          , update_every, RRDSET_TYPE_LINE);
 194             rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
 195
 196             rrddim_add(st, "HardwareCorrupted", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 197         }
 198         else rrdset_next(st);
 199
 200         rrddim_set(st, "HardwareCorrupted", HardwareCorrupted);
 201         rrdset_done(st);
 202     }
 203
 204     // --------------------------------------------------------------------
 205
 206     if(do_committed) {
 207         st = rrdset_find_localhost("mem.committed");
 208         if(!st) {
 209             st = rrdset_create_localhost("mem", "committed", NULL, "system", NULL, "Committed (Allocated) Memory", "MB"
 210                                          , 5000, update_every, RRDSET_TYPE_AREA);
 211             rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
 212
 213             rrddim_add(st, "Committed_AS", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 214         }
 215         else rrdset_next(st);
 216
 217         rrddim_set(st, "Committed_AS", Committed_AS);
 218         rrdset_done(st);
 219     }
 220
 221     // --------------------------------------------------------------------
 222
 223     if(do_writeback) {
 224         st = rrdset_find_localhost("mem.writeback");
 225         if(!st) {
 226             st = rrdset_create_localhost("mem", "writeback", NULL, "kernel", NULL, "Writeback Memory", "MB", 4000
 227                                          , update_every, RRDSET_TYPE_LINE);
 228             rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
 229
 230             rrddim_add(st, "Dirty", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 231             rrddim_add(st, "Writeback", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 232             rrddim_add(st, "FuseWriteback", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 233             rrddim_add(st, "NfsWriteback", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 234             rrddim_add(st, "Bounce", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 235         }
 236         else rrdset_next(st);
 237
 238         rrddim_set(st, "Dirty", Dirty);
 239         rrddim_set(st, "Writeback", Writeback);
 240         rrddim_set(st, "FuseWriteback", WritebackTmp);
 241         rrddim_set(st, "NfsWriteback", NFS_Unstable);
 242         rrddim_set(st, "Bounce", Bounce);
 243         rrdset_done(st);
 244     }
 245
 246     // --------------------------------------------------------------------
 247
 248     if(do_kernel) {
 249         st = rrdset_find_localhost("mem.kernel");
 250         if(!st) {
 251             st = rrdset_create_localhost("mem", "kernel", NULL, "kernel", NULL, "Memory Used by Kernel", "MB", 6000
 252                                          , update_every, RRDSET_TYPE_STACKED);
 253             rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
 254
 255             rrddim_add(st, "Slab", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 256             rrddim_add(st, "KernelStack", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 257             rrddim_add(st, "PageTables", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 258             rrddim_add(st, "VmallocUsed", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 259         }
 260         else rrdset_next(st);
 261
 262         rrddim_set(st, "KernelStack", KernelStack);
 263         rrddim_set(st, "Slab", Slab);
 264         rrddim_set(st, "PageTables", PageTables);
 265         rrddim_set(st, "VmallocUsed", VmallocUsed);
 266         rrdset_done(st);
 267     }
 268
 269     // --------------------------------------------------------------------
 270
 271     if(do_slab) {
 272         st = rrdset_find_localhost("mem.slab");
 273         if(!st) {
 274             st = rrdset_create_localhost("mem", "slab", NULL, "slab", NULL, "Reclaimable Kernel Memory", "MB", 6500
 275                                          , update_every, RRDSET_TYPE_STACKED);
 276             rrdset_flag_set(st, RRDSET_FLAG_DETAIL);
 277
 278             rrddim_add(st, "reclaimable", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 279             rrddim_add(st, "unreclaimable", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE);
 280         }
 281         else rrdset_next(st);
 282
 283         rrddim_set(st, "reclaimable", SReclaimable);
 284         rrddim_set(st, "unreclaimable", SUnreclaim);
 285         rrdset_done(st);
 286     }
 287
 288     return 0;
 289 }
 290