1 files changed, 55 insertions, 0 deletions
diff --git a/src/pmdas/solaris/arcstats.c b/src/pmdas/solaris/arcstats.c
new file mode 100644
index 0000000..75cd17c
--- /dev/null
+++ b/src/pmdas/solaris/arcstats.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2010 Max Matveev. All rights reserved.
+ *
+ * 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
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* Extract information about ZFS' Adjustable Replacement Cache
+ *
+ * The stats are in the sections called "arc_stats" of module zfs
+ */
+
+#include <kstat.h>
+#include "common.h"
+
+static kstat_t *arcstats;
+int arcstats_fresh;
+
+void
+arcstats_refresh(void)
+{
+    kstat_ctl_t *kc;
+    arcstats_fresh = 0;
+    if ((kc = kstat_ctl_update()) == NULL)
+	return;
+    if ((arcstats = kstat_lookup(kc, "zfs", -1, "arcstats")) != NULL)
+        arcstats_fresh = kstat_read(kc, arcstats, NULL) != -1;
+}
+
+int
+arcstats_fetch(pmdaMetric *pm, int inst, pmAtomValue *av)
+{
+    metricdesc_t *md = pm->m_user;
+    char *metric = (char *)md->md_offset;
+    kstat_named_t *kn;
+
+    if (!arcstats_fresh)
+	return 0;
+
+    if ((kn = kstat_data_lookup(arcstats, metric)) != NULL) 
+	return kstat_named_to_pmAtom(kn, av);
+
+    return 0;
+}