#include "utils_llist.h"
#define ZOL_ARCSTATS_FILE "/proc/spl/kstat/zfs/arcstats"
-typedef llist_t kstat_t;
+typedef llist_t kstat_t;
-static int put_zfs_value (kstat_t *ksp, char const *k, value_t v)
-{
- llentry_t *e;
- char *k_copy;
- value_t *v_copy;
-
- k_copy = strdup (k);
- if (k_copy == NULL)
- return ENOMEM;
-
- v_copy = malloc (sizeof (*v_copy));
- if (v_copy == NULL)
- {
- sfree (k_copy);
- return ENOMEM;
- }
- *v_copy = v;
-
- e = llentry_create (k_copy, v_copy);
- if (e == NULL)
- {
- sfree (v_copy);
- sfree (k_copy);
- return ENOMEM;
- }
-
- llist_append (ksp, e);
- return 0;
+static int put_zfs_value(kstat_t *ksp, char const *k, value_t v) {
+ llentry_t *e;
+ char *k_copy;
+ value_t *v_copy;
+
+ k_copy = strdup(k);
+ if (k_copy == NULL)
+ return ENOMEM;
+
+ v_copy = malloc(sizeof(*v_copy));
+ if (v_copy == NULL) {
+ sfree(k_copy);
+ return ENOMEM;
+ }
+ *v_copy = v;
+
+ e = llentry_create(k_copy, v_copy);
+ if (e == NULL) {
+ sfree(v_copy);
+ sfree(k_copy);
+ return ENOMEM;
+ }
+
+ llist_append(ksp, e);
+ return 0;
}
-static long long get_zfs_value(kstat_t *ksp, const char *key)
-{
- llentry_t *e;
- value_t *v;
-
- e = llist_search (ksp, key);
- if (e == NULL)
- {
- ERROR ("zfs_arc plugin: `llist_search` failed for key: '%s'.", key);
- return (-1);
- }
-
- v = e->value;
- return ((long long) v->derive);
+static long long get_zfs_value(kstat_t *ksp, const char *key) {
+ llentry_t *e;
+ value_t *v;
+
+ e = llist_search(ksp, key);
+ if (e == NULL) {
+ ERROR("zfs_arc plugin: `llist_search` failed for key: '%s'.", key);
+ return (-1);
+ }
+
+ v = e->value;
+ return ((long long)v->derive);
}
-static void free_zfs_values (kstat_t *ksp)
-{
- if (ksp == NULL)
- return;
+static void free_zfs_values(kstat_t *ksp) {
+ if (ksp == NULL)
+ return;
- for (llentry_t *e = llist_head (ksp); e != NULL; e = e->next)
- {
- sfree (e->key);
- sfree (e->value);
- }
+ for (llentry_t *e = llist_head(ksp); e != NULL; e = e->next) {
+ sfree(e->key);
+ sfree(e->value);
+ }
- llist_destroy (ksp);
+ llist_destroy(ksp);
}
#elif defined(KERNEL_SOLARIS)
extern kstat_ctl_t *kc;
-static long long get_zfs_value(kstat_t *ksp, char *name)
-{
+static long long get_zfs_value(kstat_t *ksp, char *name) {
- return (get_kstat_value(ksp, name));
+ return (get_kstat_value(ksp, name));
}
#elif defined(KERNEL_FREEBSD)
-#include <sys/types.h>
#include <sys/sysctl.h>
+#include <sys/types.h>
const char zfs_arcstat[] = "kstat.zfs.misc.arcstats.";
#endif
static long long get_zfs_value(kstat_t *dummy __attribute__((unused)),
- char const *name)
-{
- char buffer[256];
- long long value;
- size_t valuelen = sizeof(value);
- int rv;
-
- ssnprintf (buffer, sizeof (buffer), "%s%s", zfs_arcstat, name);
- rv = sysctlbyname (buffer, (void *) &value, &valuelen,
- /* new value = */ NULL, /* new length = */ (size_t) 0);
- if (rv == 0)
- return (value);
-
- return (-1);
+ char const *name) {
+ char buffer[256];
+ long long value;
+ size_t valuelen = sizeof(value);
+ int rv;
+
+ ssnprintf(buffer, sizeof(buffer), "%s%s", zfs_arcstat, name);
+ rv = sysctlbyname(buffer, (void *)&value, &valuelen,
+ /* new value = */ NULL, /* new length = */ (size_t)0);
+ if (rv == 0)
+ return (value);
+
+ return (-1);
}
#endif
-static void za_submit (const char* type, const char* type_instance, value_t* values, size_t values_len)
-{
- value_list_t vl = VALUE_LIST_INIT;
+static void za_submit(const char *type, const char *type_instance,
+ value_t *values, size_t values_len) {
+ value_list_t vl = VALUE_LIST_INIT;
- vl.values = values;
- vl.values_len = values_len;
+ vl.values = values;
+ vl.values_len = values_len;
- sstrncpy (vl.plugin, "zfs_arc", sizeof (vl.plugin));
- sstrncpy (vl.type, type, sizeof (vl.type));
- sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
+ sstrncpy(vl.plugin, "zfs_arc", sizeof(vl.plugin));
+ sstrncpy(vl.type, type, sizeof(vl.type));
+ sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
- plugin_dispatch_values (&vl);
+ plugin_dispatch_values(&vl);
}
-static void za_submit_gauge (const char* type, const char* type_instance, gauge_t value)
-{
- za_submit (type, type_instance, &(value_t) { .gauge = value }, 1);
+static void za_submit_gauge(const char *type, const char *type_instance,
+ gauge_t value) {
+ za_submit(type, type_instance, &(value_t){.gauge = value}, 1);
}
-static int za_read_derive (kstat_t *ksp, const char *kstat_value,
- const char *type, const char *type_instance)
-{
- long long tmp = get_zfs_value (ksp, (char *)kstat_value);
- if (tmp == -1LL)
- {
- WARNING ("zfs_arc plugin: Reading kstat value \"%s\" failed.", kstat_value);
+static int za_read_derive(kstat_t *ksp, const char *kstat_value,
+ const char *type, const char *type_instance) {
+ long long tmp = get_zfs_value(ksp, (char *)kstat_value);
+ if (tmp == -1LL) {
+ WARNING("zfs_arc plugin: Reading kstat value \"%s\" failed.", kstat_value);
return (-1);
}
- za_submit (type, type_instance, &(value_t) { .derive = (derive_t) tmp }, /* values_num = */ 1);
+ za_submit(type, type_instance, &(value_t){.derive = (derive_t)tmp},
+ /* values_num = */ 1);
return (0);
}
-static int za_read_gauge (kstat_t *ksp, const char *kstat_value,
- const char *type, const char *type_instance)
-{
- long long tmp = get_zfs_value (ksp, (char *)kstat_value);
- if (tmp == -1LL)
- {
- WARNING ("zfs_arc plugin: Reading kstat value \"%s\" failed.", kstat_value);
+static int za_read_gauge(kstat_t *ksp, const char *kstat_value,
+ const char *type, const char *type_instance) {
+ long long tmp = get_zfs_value(ksp, (char *)kstat_value);
+ if (tmp == -1LL) {
+ WARNING("zfs_arc plugin: Reading kstat value \"%s\" failed.", kstat_value);
return (-1);
}
- za_submit (type, type_instance, &(value_t) { .gauge = (gauge_t) tmp }, /* values_num = */ 1);
+ za_submit(type, type_instance, &(value_t){.gauge = (gauge_t)tmp},
+ /* values_num = */ 1);
return (0);
}
-static void za_submit_ratio (const char* type_instance, gauge_t hits, gauge_t misses)
-{
- gauge_t ratio = NAN;
+static void za_submit_ratio(const char *type_instance, gauge_t hits,
+ gauge_t misses) {
+ gauge_t ratio = NAN;
- if (!isfinite (hits) || (hits < 0.0))
- hits = 0.0;
- if (!isfinite (misses) || (misses < 0.0))
- misses = 0.0;
+ if (!isfinite(hits) || (hits < 0.0))
+ hits = 0.0;
+ if (!isfinite(misses) || (misses < 0.0))
+ misses = 0.0;
- if ((hits != 0.0) || (misses != 0.0))
- ratio = hits / (hits + misses);
+ if ((hits != 0.0) || (misses != 0.0))
+ ratio = hits / (hits + misses);
- za_submit_gauge ("cache_ratio", type_instance, ratio);
+ za_submit_gauge("cache_ratio", type_instance, ratio);
}
-static int za_read (void)
-{
- gauge_t arc_hits, arc_misses, l2_hits, l2_misses;
- kstat_t *ksp = NULL;
+static int za_read(void) {
+ gauge_t arc_hits, arc_misses, l2_hits, l2_misses;
+ kstat_t *ksp = NULL;
#if defined(KERNEL_LINUX)
- FILE *fh;
- char buffer[1024];
-
- fh = fopen (ZOL_ARCSTATS_FILE, "r");
- if (fh == NULL)
- {
- char errbuf[1024];
- ERROR ("zfs_arc plugin: Opening \"%s\" failed: %s", ZOL_ARCSTATS_FILE,
- sstrerror (errno, errbuf, sizeof (errbuf)));
- return (-1);
- }
-
- ksp = llist_create ();
- if (ksp == NULL)
- {
- ERROR ("zfs_arc plugin: `llist_create' failed.");
- fclose (fh);
- return (-1);
- }
-
- while (fgets (buffer, sizeof (buffer), fh) != NULL)
- {
- char *fields[3];
- value_t v;
- int status;
-
- status = strsplit (buffer, fields, STATIC_ARRAY_SIZE (fields));
- if (status != 3)
- continue;
-
- status = parse_value (fields[2], &v, DS_TYPE_DERIVE);
- if (status != 0)
- continue;
-
- put_zfs_value (ksp, fields[0], v);
- }
-
- fclose (fh);
+ FILE *fh;
+ char buffer[1024];
+
+ fh = fopen(ZOL_ARCSTATS_FILE, "r");
+ if (fh == NULL) {
+ char errbuf[1024];
+ ERROR("zfs_arc plugin: Opening \"%s\" failed: %s", ZOL_ARCSTATS_FILE,
+ sstrerror(errno, errbuf, sizeof(errbuf)));
+ return (-1);
+ }
+
+ ksp = llist_create();
+ if (ksp == NULL) {
+ ERROR("zfs_arc plugin: `llist_create' failed.");
+ fclose(fh);
+ return (-1);
+ }
+
+ while (fgets(buffer, sizeof(buffer), fh) != NULL) {
+ char *fields[3];
+ value_t v;
+ int status;
+
+ status = strsplit(buffer, fields, STATIC_ARRAY_SIZE(fields));
+ if (status != 3)
+ continue;
+
+ status = parse_value(fields[2], &v, DS_TYPE_DERIVE);
+ if (status != 0)
+ continue;
+
+ put_zfs_value(ksp, fields[0], v);
+ }
+
+ fclose(fh);
#elif defined(KERNEL_SOLARIS)
- get_kstat (&ksp, "zfs", 0, "arcstats");
- if (ksp == NULL)
- {
- ERROR ("zfs_arc plugin: Cannot find zfs:0:arcstats kstat.");
- return (-1);
- }
+ get_kstat(&ksp, "zfs", 0, "arcstats");
+ if (ksp == NULL) {
+ ERROR("zfs_arc plugin: Cannot find zfs:0:arcstats kstat.");
+ return (-1);
+ }
#endif
- /* Sizes */
- za_read_gauge (ksp, "anon_size", "cache_size", "anon_size");
- za_read_gauge (ksp, "c", "cache_size", "c");
- za_read_gauge (ksp, "c_max", "cache_size", "c_max");
- za_read_gauge (ksp, "c_min", "cache_size", "c_min");
- za_read_gauge (ksp, "hdr_size", "cache_size", "hdr_size");
- za_read_gauge (ksp, "metadata_size", "cache_size", "metadata_size");
- za_read_gauge (ksp, "mfu_ghost_size", "cache_size", "mfu_ghost_size");
- za_read_gauge (ksp, "mfu_size", "cache_size", "mfu_size");
- za_read_gauge (ksp, "mru_ghost_size", "cache_size", "mru_ghost_size");
- za_read_gauge (ksp, "mru_size", "cache_size", "mru_size");
- za_read_gauge (ksp, "other_size", "cache_size", "other_size");
- za_read_gauge (ksp, "p", "cache_size", "p");
- za_read_gauge (ksp, "size", "cache_size", "arc");
-
- /* The "l2_size" value has disappeared from Solaris some time in
- * early 2013, and has only reappeared recently in Solaris 11.2.
- * Stop trying if we ever fail to read it, so we don't spam the log.
- */
- static int l2_size_avail = 1;
- if (l2_size_avail && za_read_gauge (ksp, "l2_size", "cache_size", "L2") != 0)
- l2_size_avail = 0;
-
- /* Operations */
- za_read_derive (ksp, "deleted", "cache_operation", "deleted");
+ /* Sizes */
+ za_read_gauge(ksp, "anon_size", "cache_size", "anon_size");
+ za_read_gauge(ksp, "c", "cache_size", "c");
+ za_read_gauge(ksp, "c_max", "cache_size", "c_max");
+ za_read_gauge(ksp, "c_min", "cache_size", "c_min");
+ za_read_gauge(ksp, "hdr_size", "cache_size", "hdr_size");
+ za_read_gauge(ksp, "metadata_size", "cache_size", "metadata_size");
+ za_read_gauge(ksp, "mfu_ghost_size", "cache_size", "mfu_ghost_size");
+ za_read_gauge(ksp, "mfu_size", "cache_size", "mfu_size");
+ za_read_gauge(ksp, "mru_ghost_size", "cache_size", "mru_ghost_size");
+ za_read_gauge(ksp, "mru_size", "cache_size", "mru_size");
+ za_read_gauge(ksp, "other_size", "cache_size", "other_size");
+ za_read_gauge(ksp, "p", "cache_size", "p");
+ za_read_gauge(ksp, "size", "cache_size", "arc");
+
+ /* The "l2_size" value has disappeared from Solaris some time in
+ * early 2013, and has only reappeared recently in Solaris 11.2.
+ * Stop trying if we ever fail to read it, so we don't spam the log.
+ */
+ static int l2_size_avail = 1;
+ if (l2_size_avail && za_read_gauge(ksp, "l2_size", "cache_size", "L2") != 0)
+ l2_size_avail = 0;
+
+ /* Operations */
+ za_read_derive(ksp, "deleted", "cache_operation", "deleted");
#if defined(KERNEL_FREEBSD)
- za_read_derive (ksp, "allocated","cache_operation", "allocated");
+ za_read_derive(ksp, "allocated", "cache_operation", "allocated");
#endif
- /* Issue indicators */
- za_read_derive (ksp, "mutex_miss", "mutex_operations", "miss");
- za_read_derive (ksp, "hash_collisions", "hash_collisions", "");
- za_read_derive (ksp, "memory_throttle_count", "memory_throttle_count", "");
-
- /* Evictions */
- za_read_derive (ksp, "evict_l2_cached", "cache_eviction", "cached");
- za_read_derive (ksp, "evict_l2_eligible", "cache_eviction", "eligible");
- za_read_derive (ksp, "evict_l2_ineligible", "cache_eviction", "ineligible");
-
- /* Hits / misses */
- za_read_derive (ksp, "demand_data_hits", "cache_result", "demand_data-hit");
- za_read_derive (ksp, "demand_metadata_hits", "cache_result", "demand_metadata-hit");
- za_read_derive (ksp, "prefetch_data_hits", "cache_result", "prefetch_data-hit");
- za_read_derive (ksp, "prefetch_metadata_hits", "cache_result", "prefetch_metadata-hit");
- za_read_derive (ksp, "demand_data_misses", "cache_result", "demand_data-miss");
- za_read_derive (ksp, "demand_metadata_misses", "cache_result", "demand_metadata-miss");
- za_read_derive (ksp, "prefetch_data_misses", "cache_result", "prefetch_data-miss");
- za_read_derive (ksp, "prefetch_metadata_misses", "cache_result", "prefetch_metadata-miss");
- za_read_derive (ksp, "mfu_hits", "cache_result", "mfu-hit");
- za_read_derive (ksp, "mfu_ghost_hits", "cache_result", "mfu_ghost-hit");
- za_read_derive (ksp, "mru_hits", "cache_result", "mru-hit");
- za_read_derive (ksp, "mru_ghost_hits", "cache_result", "mru_ghost-hit");
-
- /* Ratios */
- arc_hits = (gauge_t) get_zfs_value(ksp, "hits");
- arc_misses = (gauge_t) get_zfs_value(ksp, "misses");
- l2_hits = (gauge_t) get_zfs_value(ksp, "l2_hits");
- l2_misses = (gauge_t) get_zfs_value(ksp, "l2_misses");
-
- za_submit_ratio ("arc", arc_hits, arc_misses);
- za_submit_ratio ("L2", l2_hits, l2_misses);
-
- /* I/O */
- value_t l2_io[] = {
- { .derive = (derive_t) get_zfs_value(ksp, "l2_read_bytes") },
- { .derive = (derive_t) get_zfs_value(ksp, "l2_write_bytes") },
- };
- za_submit ("io_octets", "L2", l2_io, STATIC_ARRAY_SIZE (l2_io));
+ /* Issue indicators */
+ za_read_derive(ksp, "mutex_miss", "mutex_operations", "miss");
+ za_read_derive(ksp, "hash_collisions", "hash_collisions", "");
+ za_read_derive(ksp, "memory_throttle_count", "memory_throttle_count", "");
+
+ /* Evictions */
+ za_read_derive(ksp, "evict_l2_cached", "cache_eviction", "cached");
+ za_read_derive(ksp, "evict_l2_eligible", "cache_eviction", "eligible");
+ za_read_derive(ksp, "evict_l2_ineligible", "cache_eviction", "ineligible");
+
+ /* Hits / misses */
+ za_read_derive(ksp, "demand_data_hits", "cache_result", "demand_data-hit");
+ za_read_derive(ksp, "demand_metadata_hits", "cache_result",
+ "demand_metadata-hit");
+ za_read_derive(ksp, "prefetch_data_hits", "cache_result",
+ "prefetch_data-hit");
+ za_read_derive(ksp, "prefetch_metadata_hits", "cache_result",
+ "prefetch_metadata-hit");
+ za_read_derive(ksp, "demand_data_misses", "cache_result", "demand_data-miss");
+ za_read_derive(ksp, "demand_metadata_misses", "cache_result",
+ "demand_metadata-miss");
+ za_read_derive(ksp, "prefetch_data_misses", "cache_result",
+ "prefetch_data-miss");
+ za_read_derive(ksp, "prefetch_metadata_misses", "cache_result",
+ "prefetch_metadata-miss");
+ za_read_derive(ksp, "mfu_hits", "cache_result", "mfu-hit");
+ za_read_derive(ksp, "mfu_ghost_hits", "cache_result", "mfu_ghost-hit");
+ za_read_derive(ksp, "mru_hits", "cache_result", "mru-hit");
+ za_read_derive(ksp, "mru_ghost_hits", "cache_result", "mru_ghost-hit");
+
+ /* Ratios */
+ arc_hits = (gauge_t)get_zfs_value(ksp, "hits");
+ arc_misses = (gauge_t)get_zfs_value(ksp, "misses");
+ l2_hits = (gauge_t)get_zfs_value(ksp, "l2_hits");
+ l2_misses = (gauge_t)get_zfs_value(ksp, "l2_misses");
+
+ za_submit_ratio("arc", arc_hits, arc_misses);
+ za_submit_ratio("L2", l2_hits, l2_misses);
+
+ /* I/O */
+ value_t l2_io[] = {
+ {.derive = (derive_t)get_zfs_value(ksp, "l2_read_bytes")},
+ {.derive = (derive_t)get_zfs_value(ksp, "l2_write_bytes")},
+ };
+ za_submit("io_octets", "L2", l2_io, STATIC_ARRAY_SIZE(l2_io));
#if defined(KERNEL_LINUX)
- free_zfs_values (ksp);
+ free_zfs_values(ksp);
#endif
- return (0);
+ return (0);
} /* int za_read */
-static int za_init (void) /* {{{ */
+static int za_init(void) /* {{{ */
{
#if defined(KERNEL_SOLARIS)
- /* kstats chain already opened by update_kstat (using *kc), verify everything went fine. */
- if (kc == NULL)
- {
- ERROR ("zfs_arc plugin: kstat chain control structure not available.");
- return (-1);
- }
+ /* kstats chain already opened by update_kstat (using *kc), verify everything
+ * went fine. */
+ if (kc == NULL) {
+ ERROR("zfs_arc plugin: kstat chain control structure not available.");
+ return (-1);
+ }
#endif
- return (0);
+ return (0);
} /* }}} int za_init */
-void module_register (void)
-{
- plugin_register_init ("zfs_arc", za_init);
- plugin_register_read ("zfs_arc", za_read);
+void module_register(void) {
+ plugin_register_init("zfs_arc", za_init);
+ plugin_register_read("zfs_arc", za_read);
} /* void module_register */
/* vmi: set sw=8 noexpandtab fdm=marker : */
projects / collectd.git / blobdiff