/**
* collectd - src/memory.c
- * Copyright (C) 2005-2008 Florian octo Forster
+ * Copyright (C) 2005-2014 Florian octo Forster
* Copyright (C) 2009 Simon Kuhnle
+ * Copyright (C) 2009 Manuel Sanmartin
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
- * Florian octo Forster <octo at verplant.org>
+ * Florian octo Forster <octo at collectd.org>
* Simon Kuhnle <simon at blarzwurst.de>
+ * Manuel Sanmartin
**/
#include "collectd.h"
# include <statgrab.h>
#endif
+#if HAVE_PERFSTAT
+# include <sys/protosw.h>
+# include <libperfstat.h>
+#endif /* HAVE_PERFSTAT */
+
/* vm_statistics_data_t */
#if HAVE_HOST_STATISTICS
static mach_port_t port_host;
#elif HAVE_LIBSTATGRAB
/* no global variables */
/* endif HAVE_LIBSTATGRAB */
-
+#elif HAVE_PERFSTAT
+static int pagesize;
+/* endif HAVE_PERFSTAT */
#else
# error "No applicable input method."
#endif
+static _Bool values_absolute = 1;
+static _Bool values_percentage = 0;
+
+static int memory_config (oconfig_item_t *ci) /* {{{ */
+{
+ int i;
+
+ for (i = 0; i < ci->children_num; i++)
+ {
+ oconfig_item_t *child = ci->children + i;
+ if (strcasecmp ("ValuesAbsolute", child->key) == 0)
+ cf_util_get_boolean (child, &values_absolute);
+ else if (strcasecmp ("ValuesPercentage", child->key) == 0)
+ cf_util_get_boolean (child, &values_percentage);
+ else
+ ERROR ("memory plugin: Invalid configuration option: "
+ "\"%s\".", child->key);
+ }
+
+ return (0);
+} /* }}} int memory_config */
+
static int memory_init (void)
{
#if HAVE_HOST_STATISTICS
#elif HAVE_LIBSTATGRAB
/* no init stuff */
-#endif /* HAVE_LIBSTATGRAB */
+/* #endif HAVE_LIBSTATGRAB */
+#elif HAVE_PERFSTAT
+ pagesize = getpagesize ();
+#endif /* HAVE_PERFSTAT */
return (0);
} /* int memory_init */
-static void memory_submit (const char *type_instance, gauge_t value)
-{
- value_t values[1];
- value_list_t vl = VALUE_LIST_INIT;
-
- values[0].gauge = value;
+#define MEMORY_SUBMIT(...) do { \
+ if (values_absolute) \
+ plugin_dispatch_multivalue (vl, 0, __VA_ARGS__, NULL); \
+ if (values_percentage) \
+ plugin_dispatch_multivalue (vl, 1, __VA_ARGS__, NULL); \
+} while (0)
- vl.values = values;
- vl.values_len = 1;
- sstrncpy (vl.host, hostname_g, sizeof (vl.host));
- sstrncpy (vl.plugin, "memory", sizeof (vl.plugin));
- sstrncpy (vl.type, "memory", sizeof (vl.type));
- sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
-
- plugin_dispatch_values (&vl);
-}
-
-static int memory_read (void)
+static int memory_read_internal (value_list_t *vl)
{
#if HAVE_HOST_STATISTICS
kern_return_t status;
vm_statistics_data_t vm_data;
mach_msg_type_number_t vm_data_len;
- long long wired;
- long long active;
- long long inactive;
- long long free;
+ gauge_t wired;
+ gauge_t active;
+ gauge_t inactive;
+ gauge_t free;
if (!port_host || !pagesize)
return (-1);
* This memory is not being used.
*/
- wired = vm_data.wire_count * pagesize;
- active = vm_data.active_count * pagesize;
- inactive = vm_data.inactive_count * pagesize;
- free = vm_data.free_count * pagesize;
+ wired = (gauge_t) (((uint64_t) vm_data.wire_count) * ((uint64_t) pagesize));
+ active = (gauge_t) (((uint64_t) vm_data.active_count) * ((uint64_t) pagesize));
+ inactive = (gauge_t) (((uint64_t) vm_data.inactive_count) * ((uint64_t) pagesize));
+ free = (gauge_t) (((uint64_t) vm_data.free_count) * ((uint64_t) pagesize));
- memory_submit ("wired", wired);
- memory_submit ("active", active);
- memory_submit ("inactive", inactive);
- memory_submit ("free", free);
+ MEMORY_SUBMIT ("wired", wired,
+ "active", active,
+ "inactive", inactive,
+ "free", free);
/* #endif HAVE_HOST_STATISTICS */
#elif HAVE_SYSCTLBYNAME
if (!isnan (sysctl_vals[i]))
sysctl_vals[i] *= sysctl_vals[0];
- memory_submit ("free", sysctl_vals[2]);
- memory_submit ("wired", sysctl_vals[3]);
- memory_submit ("active", sysctl_vals[4]);
- memory_submit ("inactive", sysctl_vals[5]);
- memory_submit ("cache", sysctl_vals[6]);
+ MEMORY_SUBMIT ("free", (gauge_t) sysctl_vals[2],
+ "wired", (gauge_t) sysctl_vals[3],
+ "active", (gauge_t) sysctl_vals[4],
+ "inactive", (gauge_t) sysctl_vals[5],
+ "cache", (gauge_t) sysctl_vals[6]);
/* #endif HAVE_SYSCTLBYNAME */
#elif KERNEL_LINUX
char *fields[8];
int numfields;
- long long mem_used = 0;
- long long mem_buffered = 0;
- long long mem_cached = 0;
- long long mem_free = 0;
+ gauge_t mem_total = 0;
+ gauge_t mem_used = 0;
+ gauge_t mem_buffered = 0;
+ gauge_t mem_cached = 0;
+ gauge_t mem_free = 0;
if ((fh = fopen ("/proc/meminfo", "r")) == NULL)
{
return (-1);
}
- while (fgets (buffer, 1024, fh) != NULL)
+ while (fgets (buffer, sizeof (buffer), fh) != NULL)
{
- long long *val = NULL;
+ gauge_t *val = NULL;
if (strncasecmp (buffer, "MemTotal:", 9) == 0)
- val = &mem_used;
+ val = &mem_total;
else if (strncasecmp (buffer, "MemFree:", 8) == 0)
val = &mem_free;
else if (strncasecmp (buffer, "Buffers:", 8) == 0)
else
continue;
- numfields = strsplit (buffer, fields, 8);
-
+ numfields = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields));
if (numfields < 2)
continue;
- *val = atoll (fields[1]) * 1024LL;
+ *val = 1024.0 * atof (fields[1]);
}
if (fclose (fh))
sstrerror (errno, errbuf, sizeof (errbuf)));
}
- if (mem_used >= (mem_free + mem_buffered + mem_cached))
- {
- mem_used -= mem_free + mem_buffered + mem_cached;
- memory_submit ("used", mem_used);
- memory_submit ("buffered", mem_buffered);
- memory_submit ("cached", mem_cached);
- memory_submit ("free", mem_free);
- }
+ if (mem_total < (mem_free + mem_buffered + mem_cached))
+ return (-1);
+
+ mem_used = mem_total - (mem_free + mem_buffered + mem_cached);
+ MEMORY_SUBMIT ("used", mem_used,
+ "buffered", mem_buffered,
+ "cached", mem_cached,
+ "free", mem_free);
/* #endif KERNEL_LINUX */
#elif HAVE_LIBKSTAT
+ /* Most of the additions here were taken as-is from the k9toolkit from
+ * Brendan Gregg and are subject to change I guess */
long long mem_used;
long long mem_free;
long long mem_lock;
+ long long mem_kern;
+ long long mem_unus;
+
+ long long pp_kernel;
+ long long physmem;
+ long long availrmem;
if (ksp == NULL)
return (-1);
mem_used = get_kstat_value (ksp, "pagestotal");
mem_free = get_kstat_value (ksp, "pagesfree");
mem_lock = get_kstat_value (ksp, "pageslocked");
+ mem_kern = 0;
+ mem_unus = 0;
+
+ pp_kernel = get_kstat_value (ksp, "pp_kernel");
+ physmem = get_kstat_value (ksp, "physmem");
+ availrmem = get_kstat_value (ksp, "availrmem");
if ((mem_used < 0LL) || (mem_free < 0LL) || (mem_lock < 0LL))
+ {
+ WARNING ("memory plugin: one of used, free or locked is negative.");
return (-1);
+ }
+
+ mem_unus = physmem - mem_used;
+
if (mem_used < (mem_free + mem_lock))
- return (-1);
+ {
+ /* source: http://wesunsolve.net/bugid/id/4909199
+ * this seems to happen when swap space is small, e.g. 2G on a 32G system
+ * we will make some assumptions here
+ * educated solaris internals help welcome here */
+ DEBUG ("memory plugin: pages total is smaller than \"free\" "
+ "+ \"locked\". This is probably due to small "
+ "swap space");
+ mem_free = availrmem;
+ mem_used = 0;
+ }
+ else
+ {
+ mem_used -= mem_free + mem_lock;
+ }
+
+ /* mem_kern is accounted for in mem_lock */
+ if (pp_kernel < mem_lock)
+ {
+ mem_kern = pp_kernel;
+ mem_lock -= pp_kernel;
+ }
+ else
+ {
+ mem_kern = mem_lock;
+ mem_lock = 0;
+ }
- mem_used -= mem_free + mem_lock;
mem_used *= pagesize; /* If this overflows you have some serious */
mem_free *= pagesize; /* memory.. Why not call me up and give me */
mem_lock *= pagesize; /* some? ;) */
-
- memory_submit ("used", mem_used);
- memory_submit ("free", mem_free);
- memory_submit ("locked", mem_lock);
+ mem_kern *= pagesize; /* it's 2011 RAM is cheap */
+ mem_unus *= pagesize;
+
+ MEMORY_SUBMIT ("used", (gauge_t) mem_used,
+ "free", (gauge_t) mem_free,
+ "locked", (gauge_t) mem_lock,
+ "kernel", (gauge_t) mem_kern,
+ "unusable", (gauge_t) mem_unus);
/* #endif HAVE_LIBKSTAT */
#elif HAVE_SYSCTL
int mib[] = {CTL_VM, VM_METER};
struct vmtotal vmtotal;
+ gauge_t mem_active;
+ gauge_t mem_inactive;
+ gauge_t mem_free;
size_t size;
memset (&vmtotal, 0, sizeof (vmtotal));
}
assert (pagesize > 0);
- memory_submit ("active", vmtotal.t_arm * pagesize);
- memory_submit ("inactive", (vmtotal.t_rm - vmtotal.t_arm) * pagesize);
- memory_submit ("free", vmtotal.t_free * pagesize);
+ mem_active = (gauge_t) (vmtotal.t_arm * pagesize);
+ mem_inactive = (gauge_t) ((vmtotal.t_rm - vmtotal.t_arm) * pagesize);
+ mem_free = (gauge_t) (vmtotal.t_free * pagesize);
+
+ MEMORY_SUBMIT ("active", mem_active,
+ "inactive", mem_inactive,
+ "free", mem_free);
/* #endif HAVE_SYSCTL */
#elif HAVE_LIBSTATGRAB
sg_mem_stats *ios;
- if ((ios = sg_get_mem_stats ()) != NULL)
+ ios = sg_get_mem_stats ();
+ if (ios == NULL)
+ return (-1);
+
+ MEMORY_SUBMIT ("used", (gauge_t) ios->used,
+ "cached", (gauge_t) ios->cache,
+ "free", (gauge_t) ios->free);
+/* #endif HAVE_LIBSTATGRAB */
+
+#elif HAVE_PERFSTAT
+ perfstat_memory_total_t pmemory;
+
+ memset (&pmemory, 0, sizeof (pmemory));
+ if (perfstat_memory_total(NULL, &pmemory, sizeof(pmemory), 1) < 0)
{
- memory_submit ("used", ios->used);
- memory_submit ("cached", ios->cache);
- memory_submit ("free", ios->free);
+ char errbuf[1024];
+ WARNING ("memory plugin: perfstat_memory_total failed: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (-1);
}
-#endif /* HAVE_LIBSTATGRAB */
+
+ /* Unfortunately, the AIX documentation is not very clear on how these
+ * numbers relate to one another. The only thing is states explcitly
+ * is:
+ * real_total = real_process + real_free + numperm + real_system
+ *
+ * Another segmentation, which would be closer to the numbers reported
+ * by the "svmon" utility, would be:
+ * real_total = real_free + real_inuse
+ * real_inuse = "active" + real_pinned + numperm
+ */
+ MEMORY_SUBMIT ("free", (gauge_t) (pmemory.real_free * pagesize),
+ "cached", (gauge_t) (pmemory.numperm * pagesize),
+ "system", (gauge_t) (pmemory.real_system * pagesize),
+ "user", (gauge_t) (pmemory.real_process * pagesize));
+#endif /* HAVE_PERFSTAT */
return (0);
-}
+} /* }}} int memory_read_internal */
+
+static int memory_read (void) /* {{{ */
+{
+ value_t v[1];
+ value_list_t vl = VALUE_LIST_INIT;
+
+ vl.values = v;
+ vl.values_len = STATIC_ARRAY_SIZE (v);
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ sstrncpy (vl.plugin, "memory", sizeof (vl.plugin));
+ sstrncpy (vl.type, "memory", sizeof (vl.type));
+ vl.time = cdtime ();
+
+ return (memory_read_internal (&vl));
+} /* }}} int memory_read */
void module_register (void)
{
+ plugin_register_complex_config ("memory", memory_config);
plugin_register_init ("memory", memory_init);
plugin_register_read ("memory", memory_read);
} /* void module_register */
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