diff options
Diffstat (limited to 'src/proc_meminfo.c')
| -rwxr-xr-x | src/proc_meminfo.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/src/proc_meminfo.c b/src/proc_meminfo.c new file mode 100755 index 00000000..dbd43369 --- /dev/null +++ b/src/proc_meminfo.c @@ -0,0 +1,254 @@ +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "common.h" +#include "log.h" +#include "appconfig.h" +#include "procfile.h" +#include "rrd.h" +#include "plugin_proc.h" + +#define MAX_PROC_MEMINFO_LINE 4096 +#define MAX_PROC_MEMINFO_NAME 1024 + +int do_proc_meminfo(int update_every, unsigned long long dt) { + static procfile *ff = NULL; + + static int do_ram = -1, do_swap = -1, do_hwcorrupt = -1, do_committed = -1, do_writeback = -1, do_kernel = -1, do_slab = -1; + + if(do_ram == -1) do_ram = config_get_boolean("plugin:proc:/proc/meminfo", "system ram", 1); + if(do_swap == -1) do_swap = config_get_boolean("plugin:proc:/proc/meminfo", "system swap", 1); + if(do_hwcorrupt == -1) do_hwcorrupt = config_get_boolean_ondemand("plugin:proc:/proc/meminfo", "hardware corrupted ECC", CONFIG_ONDEMAND_ONDEMAND); + if(do_committed == -1) do_committed = config_get_boolean("plugin:proc:/proc/meminfo", "committed memory", 1); + if(do_writeback == -1) do_writeback = config_get_boolean("plugin:proc:/proc/meminfo", "writeback memory", 1); + if(do_kernel == -1) do_kernel = config_get_boolean("plugin:proc:/proc/meminfo", "kernel memory", 1); + if(do_slab == -1) do_slab = config_get_boolean("plugin:proc:/proc/meminfo", "slab memory", 1); + + if(dt) {}; + + if(!ff) { + char filename[FILENAME_MAX + 1]; + snprintf(filename, FILENAME_MAX, "%s%s", global_host_prefix, "/proc/meminfo"); + ff = procfile_open(config_get("plugin:proc:/proc/meminfo", "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT); + } + if(!ff) return 1; + + ff = procfile_readall(ff); + if(!ff) return 0; // we return 0, so that we will retry to open it next time + + uint32_t lines = procfile_lines(ff), l; + uint32_t words; + + int hwcorrupted = 0; + + unsigned long long MemTotal = 0, MemFree = 0, Buffers = 0, Cached = 0, SwapCached = 0, + Active = 0, Inactive = 0, ActiveAnon = 0, InactiveAnon = 0, ActiveFile = 0, InactiveFile = 0, + Unevictable = 0, Mlocked = 0, SwapTotal = 0, SwapFree = 0, Dirty = 0, Writeback = 0, AnonPages = 0, + Mapped = 0, Shmem = 0, Slab = 0, SReclaimable = 0, SUnreclaim = 0, KernelStack = 0, PageTables = 0, + NFS_Unstable = 0, Bounce = 0, WritebackTmp = 0, CommitLimit = 0, Committed_AS = 0, + VmallocTotal = 0, VmallocUsed = 0, VmallocChunk = 0, + AnonHugePages = 0, HugePages_Total = 0, HugePages_Free = 0, HugePages_Rsvd = 0, HugePages_Surp = 0, Hugepagesize = 0, + DirectMap4k = 0, DirectMap2M = 0, HardwareCorrupted = 0; + + for(l = 0; l < lines ;l++) { + words = procfile_linewords(ff, l); + if(words < 2) continue; + + char *name = procfile_lineword(ff, l, 0); + unsigned long long value = strtoull(procfile_lineword(ff, l, 1), NULL, 10); + + if(!MemTotal && strcmp(name, "MemTotal") == 0) MemTotal = value; + else if(!MemFree && strcmp(name, "MemFree") == 0) MemFree = value; + else if(!Buffers && strcmp(name, "Buffers") == 0) Buffers = value; + else if(!Cached && strcmp(name, "Cached") == 0) Cached = value; + else if(!SwapCached && strcmp(name, "SwapCached") == 0) SwapCached = value; + else if(!Active && strcmp(name, "Active") == 0) Active = value; + else if(!Inactive && strcmp(name, "Inactive") == 0) Inactive = value; + else if(!ActiveAnon && strcmp(name, "ActiveAnon") == 0) ActiveAnon = value; + else if(!InactiveAnon && strcmp(name, "InactiveAnon") == 0) InactiveAnon = value; + else if(!ActiveFile && strcmp(name, "ActiveFile") == 0) ActiveFile = value; + else if(!InactiveFile && strcmp(name, "InactiveFile") == 0) InactiveFile = value; + else if(!Unevictable && strcmp(name, "Unevictable") == 0) Unevictable = value; + else if(!Mlocked && strcmp(name, "Mlocked") == 0) Mlocked = value; + else if(!SwapTotal && strcmp(name, "SwapTotal") == 0) SwapTotal = value; + else if(!SwapFree && strcmp(name, "SwapFree") == 0) SwapFree = value; + else if(!Dirty && strcmp(name, "Dirty") == 0) Dirty = value; + else if(!Writeback && strcmp(name, "Writeback") == 0) Writeback = value; + else if(!AnonPages && strcmp(name, "AnonPages") == 0) AnonPages = value; + else if(!Mapped && strcmp(name, "Mapped") == 0) Mapped = value; + else if(!Shmem && strcmp(name, "Shmem") == 0) Shmem = value; + else if(!Slab && strcmp(name, "Slab") == 0) Slab = value; + else if(!SReclaimable && strcmp(name, "SReclaimable") == 0) SReclaimable = value; + else if(!SUnreclaim && strcmp(name, "SUnreclaim") == 0) SUnreclaim = value; + else if(!KernelStack && strcmp(name, "KernelStack") == 0) KernelStack = value; + else if(!PageTables && strcmp(name, "PageTables") == 0) PageTables = value; + else if(!NFS_Unstable && strcmp(name, "NFS_Unstable") == 0) NFS_Unstable = value; + else if(!Bounce && strcmp(name, "Bounce") == 0) Bounce = value; + else if(!WritebackTmp && strcmp(name, "WritebackTmp") == 0) WritebackTmp = value; + else if(!CommitLimit && strcmp(name, "CommitLimit") == 0) CommitLimit = value; + else if(!Committed_AS && strcmp(name, "Committed_AS") == 0) Committed_AS = value; + else if(!VmallocTotal && strcmp(name, "VmallocTotal") == 0) VmallocTotal = value; + else if(!VmallocUsed && strcmp(name, "VmallocUsed") == 0) VmallocUsed = value; + else if(!VmallocChunk && strcmp(name, "VmallocChunk") == 0) VmallocChunk = value; + else if(!HardwareCorrupted && strcmp(name, "HardwareCorrupted") == 0) { HardwareCorrupted = value; hwcorrupted = 1; } + else if(!AnonHugePages && strcmp(name, "AnonHugePages") == 0) AnonHugePages = value; + else if(!HugePages_Total && strcmp(name, "HugePages_Total") == 0) HugePages_Total = value; + else if(!HugePages_Free && strcmp(name, "HugePages_Free") == 0) HugePages_Free = value; + else if(!HugePages_Rsvd && strcmp(name, "HugePages_Rsvd") == 0) HugePages_Rsvd = value; + else if(!HugePages_Surp && strcmp(name, "HugePages_Surp") == 0) HugePages_Surp = value; + else if(!Hugepagesize && strcmp(name, "Hugepagesize") == 0) Hugepagesize = value; + else if(!DirectMap4k && strcmp(name, "DirectMap4k") == 0) DirectMap4k = value; + else if(!DirectMap2M && strcmp(name, "DirectMap2M") == 0) DirectMap2M = value; + } + + RRDSET *st; + + // -------------------------------------------------------------------- + + // http://stackoverflow.com/questions/3019748/how-to-reliably-measure-available-memory-in-linux + unsigned long long MemUsed = MemTotal - MemFree - Cached - Buffers; + + if(do_ram) { + st = rrdset_find("system.ram"); + if(!st) { + st = rrdset_create("system", "ram", NULL, "ram", NULL, "System RAM", "MB", 200, update_every, RRDSET_TYPE_STACKED); + + rrddim_add(st, "buffers", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "used", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "cached", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "free", NULL, 1, 1024, RRDDIM_ABSOLUTE); + } + else rrdset_next(st); + + rrddim_set(st, "used", MemUsed); + rrddim_set(st, "free", MemFree); + rrddim_set(st, "cached", Cached); + rrddim_set(st, "buffers", Buffers); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + unsigned long long SwapUsed = SwapTotal - SwapFree; + + if(do_swap) { + st = rrdset_find("system.swap"); + if(!st) { + st = rrdset_create("system", "swap", NULL, "swap", NULL, "System Swap", "MB", 201, update_every, RRDSET_TYPE_STACKED); + st->isdetail = 1; + + rrddim_add(st, "free", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "used", NULL, 1, 1024, RRDDIM_ABSOLUTE); + } + else rrdset_next(st); + + rrddim_set(st, "used", SwapUsed); + rrddim_set(st, "free", SwapFree); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + if(hwcorrupted && do_hwcorrupt && HardwareCorrupted > 0) { + do_hwcorrupt = CONFIG_ONDEMAND_YES; + + st = rrdset_find("mem.hwcorrupt"); + if(!st) { + st = rrdset_create("mem", "hwcorrupt", NULL, "errors", NULL, "Hardware Corrupted ECC", "MB", 9000, update_every, RRDSET_TYPE_LINE); + st->isdetail = 1; + + rrddim_add(st, "HardwareCorrupted", NULL, 1, 1024, RRDDIM_ABSOLUTE); + } + else rrdset_next(st); + + rrddim_set(st, "HardwareCorrupted", HardwareCorrupted); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + if(do_committed) { + st = rrdset_find("mem.committed"); + if(!st) { + st = rrdset_create("mem", "committed", NULL, "system", NULL, "Committed (Allocated) Memory", "MB", 5000, update_every, RRDSET_TYPE_AREA); + st->isdetail = 1; + + rrddim_add(st, "Committed_AS", NULL, 1, 1024, RRDDIM_ABSOLUTE); + } + else rrdset_next(st); + + rrddim_set(st, "Committed_AS", Committed_AS); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + if(do_writeback) { + st = rrdset_find("mem.writeback"); + if(!st) { + st = rrdset_create("mem", "writeback", NULL, "kernel", NULL, "Writeback Memory", "MB", 4000, update_every, RRDSET_TYPE_LINE); + st->isdetail = 1; + + rrddim_add(st, "Dirty", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "Writeback", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "FuseWriteback", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "NfsWriteback", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "Bounce", NULL, 1, 1024, RRDDIM_ABSOLUTE); + } + else rrdset_next(st); + + rrddim_set(st, "Dirty", Dirty); + rrddim_set(st, "Writeback", Writeback); + rrddim_set(st, "FuseWriteback", WritebackTmp); + rrddim_set(st, "NfsWriteback", NFS_Unstable); + rrddim_set(st, "Bounce", Bounce); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + if(do_kernel) { + st = rrdset_find("mem.kernel"); + if(!st) { + st = rrdset_create("mem", "kernel", NULL, "kernel", NULL, "Memory Used by Kernel", "MB", 6000, update_every, RRDSET_TYPE_STACKED); + st->isdetail = 1; + + rrddim_add(st, "Slab", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "KernelStack", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "PageTables", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "VmallocUsed", NULL, 1, 1024, RRDDIM_ABSOLUTE); + } + else rrdset_next(st); + + rrddim_set(st, "KernelStack", KernelStack); + rrddim_set(st, "Slab", Slab); + rrddim_set(st, "PageTables", PageTables); + rrddim_set(st, "VmallocUsed", VmallocUsed); + rrdset_done(st); + } + + // -------------------------------------------------------------------- + + if(do_slab) { + st = rrdset_find("mem.slab"); + if(!st) { + st = rrdset_create("mem", "slab", NULL, "slab", NULL, "Reclaimable Kernel Memory", "MB", 6500, update_every, RRDSET_TYPE_STACKED); + st->isdetail = 1; + + rrddim_add(st, "reclaimable", NULL, 1, 1024, RRDDIM_ABSOLUTE); + rrddim_add(st, "unreclaimable", NULL, 1, 1024, RRDDIM_ABSOLUTE); + } + else rrdset_next(st); + + rrddim_set(st, "reclaimable", SReclaimable); + rrddim_set(st, "unreclaimable", SUnreclaim); + rrdset_done(st); + } + + return 0; +} + |