// SPDX-License-Identifier: GPL-3.0-or-later #include "plugin_proc.h" #define PLUGIN_PROC_MODULE_MEMINFO_NAME "/proc/meminfo" #define CONFIG_SECTION_PLUGIN_PROC_MEMINFO "plugin:" PLUGIN_PROC_CONFIG_NAME ":" PLUGIN_PROC_MODULE_MEMINFO_NAME int do_proc_meminfo(int update_every, usec_t dt) { (void)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, do_hugepages = -1, do_transparent_hugepages = -1; static int do_percpu = 0; static ARL_BASE *arl_base = NULL; static ARL_ENTRY *arl_hwcorrupted = NULL, *arl_memavailable = NULL; static unsigned long long MemTotal = 0, MemFree = 0, MemAvailable = 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, Percpu = 0, AnonHugePages = 0, ShmemHugePages = 0, HugePages_Total = 0, HugePages_Free = 0, HugePages_Rsvd = 0, HugePages_Surp = 0, Hugepagesize = 0, //DirectMap4k = 0, //DirectMap2M = 0, HardwareCorrupted = 0; if(unlikely(!arl_base)) { do_ram = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "system ram", 1); do_swap = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "system swap", CONFIG_BOOLEAN_AUTO); do_hwcorrupt = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "hardware corrupted ECC", CONFIG_BOOLEAN_AUTO); do_committed = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "committed memory", 1); do_writeback = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "writeback memory", 1); do_kernel = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "kernel memory", 1); do_slab = config_get_boolean(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "slab memory", 1); do_hugepages = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "hugepages", CONFIG_BOOLEAN_AUTO); do_transparent_hugepages = config_get_boolean_ondemand(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "transparent hugepages", CONFIG_BOOLEAN_AUTO); arl_base = arl_create("meminfo", NULL, 60); arl_expect(arl_base, "MemTotal", &MemTotal); arl_expect(arl_base, "MemFree", &MemFree); arl_memavailable = arl_expect(arl_base, "MemAvailable", &MemAvailable); arl_expect(arl_base, "Buffers", &Buffers); arl_expect(arl_base, "Cached", &Cached); //arl_expect(arl_base, "SwapCached", &SwapCached); //arl_expect(arl_base, "Active", &Active); //arl_expect(arl_base, "Inactive", &Inactive); //arl_expect(arl_base, "ActiveAnon", &ActiveAnon); //arl_expect(arl_base, "InactiveAnon", &InactiveAnon); //arl_expect(arl_base, "ActiveFile", &ActiveFile); //arl_expect(arl_base, "InactiveFile", &InactiveFile); //arl_expect(arl_base, "Unevictable", &Unevictable); //arl_expect(arl_base, "Mlocked", &Mlocked); arl_expect(arl_base, "SwapTotal", &SwapTotal); arl_expect(arl_base, "SwapFree", &SwapFree); arl_expect(arl_base, "Dirty", &Dirty); arl_expect(arl_base, "Writeback", &Writeback); //arl_expect(arl_base, "AnonPages", &AnonPages); //arl_expect(arl_base, "Mapped", &Mapped); arl_expect(arl_base, "Shmem", &Shmem); arl_expect(arl_base, "Slab", &Slab); arl_expect(arl_base, "SReclaimable", &SReclaimable); arl_expect(arl_base, "SUnreclaim", &SUnreclaim); arl_expect(arl_base, "KernelStack", &KernelStack); arl_expect(arl_base, "PageTables", &PageTables); arl_expect(arl_base, "NFS_Unstable", &NFS_Unstable); arl_expect(arl_base, "Bounce", &Bounce); arl_expect(arl_base, "WritebackTmp", &WritebackTmp); //arl_expect(arl_base, "CommitLimit", &CommitLimit); arl_expect(arl_base, "Committed_AS", &Committed_AS); //arl_expect(arl_base, "VmallocTotal", &VmallocTotal); arl_expect(arl_base, "VmallocUsed", &VmallocUsed); //arl_expect(arl_base, "VmallocChunk", &VmallocChunk); arl_expect(arl_base, "Percpu", &Percpu); arl_hwcorrupted = arl_expect(arl_base, "HardwareCorrupted", &HardwareCorrupted); arl_expect(arl_base, "AnonHugePages", &AnonHugePages); arl_expect(arl_base, "ShmemHugePages", &ShmemHugePages); arl_expect(arl_base, "HugePages_Total", &HugePages_Total); arl_expect(arl_base, "HugePages_Free", &HugePages_Free); arl_expect(arl_base, "HugePages_Rsvd", &HugePages_Rsvd); arl_expect(arl_base, "HugePages_Surp", &HugePages_Surp); arl_expect(arl_base, "Hugepagesize", &Hugepagesize); //arl_expect(arl_base, "DirectMap4k", &DirectMap4k); //arl_expect(arl_base, "DirectMap2M", &DirectMap2M); } if(unlikely(!ff)) { char filename[FILENAME_MAX + 1]; snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/proc/meminfo"); ff = procfile_open(config_get(CONFIG_SECTION_PLUGIN_PROC_MEMINFO, "filename to monitor", filename), " \t:", PROCFILE_FLAG_DEFAULT); if(unlikely(!ff)) return 1; } ff = procfile_readall(ff); if(unlikely(!ff)) return 0; // we return 0, so that we will retry to open it next time size_t lines = procfile_lines(ff), l; arl_begin(arl_base); static int first_ff_read = 1; for(l = 0; l < lines ;l++) { size_t words = procfile_linewords(ff, l); if(unlikely(words < 2)) continue; if (first_ff_read && !strcmp(procfile_lineword(ff, l, 0), "Percpu")) do_percpu = 1; if(unlikely(arl_check(arl_base, procfile_lineword(ff, l, 0), procfile_lineword(ff, l, 1)))) break; } if (first_ff_read) first_ff_read = 0; // -------------------------------------------------------------------- // http://calimeroteknik.free.fr/blag/?article20/really-used-memory-on-gnu-linux unsigned long long MemCached = Cached + SReclaimable - Shmem; unsigned long long MemUsed = MemTotal - MemFree - MemCached - Buffers; // The Linux kernel doesn't report ZFS ARC usage as cache memory (the ARC is included in the total used system memory) MemCached += (zfs_arcstats_shrinkable_cache_size_bytes / 1024); MemUsed -= (zfs_arcstats_shrinkable_cache_size_bytes / 1024); MemAvailable += (zfs_arcstats_shrinkable_cache_size_bytes / 1024); if(do_ram) { { static RRDSET *st_system_ram = NULL; static RRDDIM *rd_free = NULL, *rd_used = NULL, *rd_cached = NULL, *rd_buffers = NULL; if(unlikely(!st_system_ram)) { st_system_ram = rrdset_create_localhost( "system" , "ram" , NULL , "ram" , NULL , "System RAM" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_SYSTEM_RAM , update_every , RRDSET_TYPE_STACKED ); rd_free = rrddim_add(st_system_ram, "free", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_used = rrddim_add(st_system_ram, "used", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_cached = rrddim_add(st_system_ram, "cached", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_buffers = rrddim_add(st_system_ram, "buffers", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_system_ram); rrddim_set_by_pointer(st_system_ram, rd_free, MemFree); rrddim_set_by_pointer(st_system_ram, rd_used, MemUsed); rrddim_set_by_pointer(st_system_ram, rd_cached, MemCached); rrddim_set_by_pointer(st_system_ram, rd_buffers, Buffers); rrdset_done(st_system_ram); } if(arl_memavailable->flags & ARL_ENTRY_FLAG_FOUND) { static RRDSET *st_mem_available = NULL; static RRDDIM *rd_avail = NULL; if(unlikely(!st_mem_available)) { st_mem_available = rrdset_create_localhost( "mem" , "available" , NULL , "system" , NULL , "Available RAM for applications" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_MEM_SYSTEM_AVAILABLE , update_every , RRDSET_TYPE_AREA ); rd_avail = rrddim_add(st_mem_available, "MemAvailable", "avail", 1, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_mem_available); rrddim_set_by_pointer(st_mem_available, rd_avail, MemAvailable); rrdset_done(st_mem_available); } } // -------------------------------------------------------------------- unsigned long long SwapUsed = SwapTotal - SwapFree; if(do_swap == CONFIG_BOOLEAN_YES || (do_swap == CONFIG_BOOLEAN_AUTO && (SwapTotal || SwapUsed || SwapFree || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { do_swap = CONFIG_BOOLEAN_YES; static RRDSET *st_system_swap = NULL; static RRDDIM *rd_free = NULL, *rd_used = NULL; if(unlikely(!st_system_swap)) { st_system_swap = rrdset_create_localhost( "system" , "swap" , NULL , "swap" , NULL , "System Swap" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_SYSTEM_SWAP , update_every , RRDSET_TYPE_STACKED ); rrdset_flag_set(st_system_swap, RRDSET_FLAG_DETAIL); rd_free = rrddim_add(st_system_swap, "free", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_used = rrddim_add(st_system_swap, "used", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_system_swap); rrddim_set_by_pointer(st_system_swap, rd_used, SwapUsed); rrddim_set_by_pointer(st_system_swap, rd_free, SwapFree); rrdset_done(st_system_swap); } // -------------------------------------------------------------------- if(arl_hwcorrupted->flags & ARL_ENTRY_FLAG_FOUND && (do_hwcorrupt == CONFIG_BOOLEAN_YES || (do_hwcorrupt == CONFIG_BOOLEAN_AUTO && (HardwareCorrupted > 0 || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES)))) { do_hwcorrupt = CONFIG_BOOLEAN_YES; static RRDSET *st_mem_hwcorrupt = NULL; static RRDDIM *rd_corrupted = NULL; if(unlikely(!st_mem_hwcorrupt)) { st_mem_hwcorrupt = rrdset_create_localhost( "mem" , "hwcorrupt" , NULL , "ecc" , NULL , "Corrupted Memory, detected by ECC" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_MEM_HW , update_every , RRDSET_TYPE_LINE ); rrdset_flag_set(st_mem_hwcorrupt, RRDSET_FLAG_DETAIL); rd_corrupted = rrddim_add(st_mem_hwcorrupt, "HardwareCorrupted", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_mem_hwcorrupt); rrddim_set_by_pointer(st_mem_hwcorrupt, rd_corrupted, HardwareCorrupted); rrdset_done(st_mem_hwcorrupt); } // -------------------------------------------------------------------- if(do_committed) { static RRDSET *st_mem_committed = NULL; static RRDDIM *rd_committed = NULL; if(unlikely(!st_mem_committed)) { st_mem_committed = rrdset_create_localhost( "mem" , "committed" , NULL , "system" , NULL , "Committed (Allocated) Memory" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_MEM_SYSTEM_COMMITTED , update_every , RRDSET_TYPE_AREA ); rrdset_flag_set(st_mem_committed, RRDSET_FLAG_DETAIL); rd_committed = rrddim_add(st_mem_committed, "Committed_AS", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_mem_committed); rrddim_set_by_pointer(st_mem_committed, rd_committed, Committed_AS); rrdset_done(st_mem_committed); } // -------------------------------------------------------------------- if(do_writeback) { static RRDSET *st_mem_writeback = NULL; static RRDDIM *rd_dirty = NULL, *rd_writeback = NULL, *rd_fusewriteback = NULL, *rd_nfs_writeback = NULL, *rd_bounce = NULL; if(unlikely(!st_mem_writeback)) { st_mem_writeback = rrdset_create_localhost( "mem" , "writeback" , NULL , "kernel" , NULL , "Writeback Memory" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_MEM_KERNEL , update_every , RRDSET_TYPE_LINE ); rrdset_flag_set(st_mem_writeback, RRDSET_FLAG_DETAIL); rd_dirty = rrddim_add(st_mem_writeback, "Dirty", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_writeback = rrddim_add(st_mem_writeback, "Writeback", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_fusewriteback = rrddim_add(st_mem_writeback, "FuseWriteback", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_nfs_writeback = rrddim_add(st_mem_writeback, "NfsWriteback", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_bounce = rrddim_add(st_mem_writeback, "Bounce", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_mem_writeback); rrddim_set_by_pointer(st_mem_writeback, rd_dirty, Dirty); rrddim_set_by_pointer(st_mem_writeback, rd_writeback, Writeback); rrddim_set_by_pointer(st_mem_writeback, rd_fusewriteback, WritebackTmp); rrddim_set_by_pointer(st_mem_writeback, rd_nfs_writeback, NFS_Unstable); rrddim_set_by_pointer(st_mem_writeback, rd_bounce, Bounce); rrdset_done(st_mem_writeback); } // -------------------------------------------------------------------- if(do_kernel) { static RRDSET *st_mem_kernel = NULL; static RRDDIM *rd_slab = NULL, *rd_kernelstack = NULL, *rd_pagetables = NULL, *rd_vmallocused = NULL, *rd_percpu = NULL; if(unlikely(!st_mem_kernel)) { st_mem_kernel = rrdset_create_localhost( "mem" , "kernel" , NULL , "kernel" , NULL , "Memory Used by Kernel" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_MEM_KERNEL + 1 , update_every , RRDSET_TYPE_STACKED ); rrdset_flag_set(st_mem_kernel, RRDSET_FLAG_DETAIL); rd_slab = rrddim_add(st_mem_kernel, "Slab", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_kernelstack = rrddim_add(st_mem_kernel, "KernelStack", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_pagetables = rrddim_add(st_mem_kernel, "PageTables", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_vmallocused = rrddim_add(st_mem_kernel, "VmallocUsed", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); if (do_percpu) rd_percpu = rrddim_add(st_mem_kernel, "Percpu", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_mem_kernel); rrddim_set_by_pointer(st_mem_kernel, rd_slab, Slab); rrddim_set_by_pointer(st_mem_kernel, rd_kernelstack, KernelStack); rrddim_set_by_pointer(st_mem_kernel, rd_pagetables, PageTables); rrddim_set_by_pointer(st_mem_kernel, rd_vmallocused, VmallocUsed); if (do_percpu) rrddim_set_by_pointer(st_mem_kernel, rd_percpu, Percpu); rrdset_done(st_mem_kernel); } // -------------------------------------------------------------------- if(do_slab) { static RRDSET *st_mem_slab = NULL; static RRDDIM *rd_reclaimable = NULL, *rd_unreclaimable = NULL; if(unlikely(!st_mem_slab)) { st_mem_slab = rrdset_create_localhost( "mem" , "slab" , NULL , "slab" , NULL , "Reclaimable Kernel Memory" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_MEM_SLAB , update_every , RRDSET_TYPE_STACKED ); rrdset_flag_set(st_mem_slab, RRDSET_FLAG_DETAIL); rd_reclaimable = rrddim_add(st_mem_slab, "reclaimable", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_unreclaimable = rrddim_add(st_mem_slab, "unreclaimable", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_mem_slab); rrddim_set_by_pointer(st_mem_slab, rd_reclaimable, SReclaimable); rrddim_set_by_pointer(st_mem_slab, rd_unreclaimable, SUnreclaim); rrdset_done(st_mem_slab); } // -------------------------------------------------------------------- if(do_hugepages == CONFIG_BOOLEAN_YES || (do_hugepages == CONFIG_BOOLEAN_AUTO && ((Hugepagesize && HugePages_Total) || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { do_hugepages = CONFIG_BOOLEAN_YES; static RRDSET *st_mem_hugepages = NULL; static RRDDIM *rd_used = NULL, *rd_free = NULL, *rd_rsvd = NULL, *rd_surp = NULL; if(unlikely(!st_mem_hugepages)) { st_mem_hugepages = rrdset_create_localhost( "mem" , "hugepages" , NULL , "hugepages" , NULL , "Dedicated HugePages Memory" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_MEM_HUGEPAGES + 1 , update_every , RRDSET_TYPE_STACKED ); rrdset_flag_set(st_mem_hugepages, RRDSET_FLAG_DETAIL); rd_free = rrddim_add(st_mem_hugepages, "free", NULL, Hugepagesize, 1024, RRD_ALGORITHM_ABSOLUTE); rd_used = rrddim_add(st_mem_hugepages, "used", NULL, Hugepagesize, 1024, RRD_ALGORITHM_ABSOLUTE); rd_surp = rrddim_add(st_mem_hugepages, "surplus", NULL, Hugepagesize, 1024, RRD_ALGORITHM_ABSOLUTE); rd_rsvd = rrddim_add(st_mem_hugepages, "reserved", NULL, Hugepagesize, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_mem_hugepages); rrddim_set_by_pointer(st_mem_hugepages, rd_used, HugePages_Total - HugePages_Free - HugePages_Rsvd); rrddim_set_by_pointer(st_mem_hugepages, rd_free, HugePages_Free); rrddim_set_by_pointer(st_mem_hugepages, rd_rsvd, HugePages_Rsvd); rrddim_set_by_pointer(st_mem_hugepages, rd_surp, HugePages_Surp); rrdset_done(st_mem_hugepages); } // -------------------------------------------------------------------- if(do_transparent_hugepages == CONFIG_BOOLEAN_YES || (do_transparent_hugepages == CONFIG_BOOLEAN_AUTO && (AnonHugePages || ShmemHugePages || netdata_zero_metrics_enabled == CONFIG_BOOLEAN_YES))) { do_transparent_hugepages = CONFIG_BOOLEAN_YES; static RRDSET *st_mem_transparent_hugepages = NULL; static RRDDIM *rd_anonymous = NULL, *rd_shared = NULL; if(unlikely(!st_mem_transparent_hugepages)) { st_mem_transparent_hugepages = rrdset_create_localhost( "mem" , "transparent_hugepages" , NULL , "hugepages" , NULL , "Transparent HugePages Memory" , "MiB" , PLUGIN_PROC_NAME , PLUGIN_PROC_MODULE_MEMINFO_NAME , NETDATA_CHART_PRIO_MEM_HUGEPAGES , update_every , RRDSET_TYPE_STACKED ); rrdset_flag_set(st_mem_transparent_hugepages, RRDSET_FLAG_DETAIL); rd_anonymous = rrddim_add(st_mem_transparent_hugepages, "anonymous", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); rd_shared = rrddim_add(st_mem_transparent_hugepages, "shmem", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); } else rrdset_next(st_mem_transparent_hugepages); rrddim_set_by_pointer(st_mem_transparent_hugepages, rd_anonymous, AnonHugePages); rrddim_set_by_pointer(st_mem_transparent_hugepages, rd_shared, ShmemHugePages); rrdset_done(st_mem_transparent_hugepages); } return 0; }