added swapin/out support to swap plugin

Signed-off-by: Florian Forster <octo@huhu.verplant.org>

diff --git a/src/swap.c b/src/swap.c
index de9b5f3..dccea6d 100644 (file)
--- a/src/swap.c
+++ b/src/swap.c
@@ -138,18 +138,30 @@ static int swap_init (void)
        return (0);
 }
 
-static void swap_submit (const char *type_instance, double value)
+static void swap_submit (const char *type_instance, derive_t value, unsigned type)
 {
        value_t values[1];
        value_list_t vl = VALUE_LIST_INIT;
 
-       values[0].gauge = value;
+       switch (type)
+       {
+               case DS_TYPE_GAUGE:
+                       values[0].gauge = value;
+                       sstrncpy (vl.type, "swap", sizeof (vl.type));
+                       break;
+               case DS_TYPE_DERIVE:
+                       values[0].derive = value;
+                       sstrncpy (vl.type, "swap_io", sizeof (vl.type));
+                       break;
+               default:
+                       ERROR ("swap plugin: swap_submit called with wrong"
+                               " type");
+       }
 
        vl.values = values;
        vl.values_len = 1;
        sstrncpy (vl.host, hostname_g, sizeof (vl.host));
        sstrncpy (vl.plugin, "swap", sizeof (vl.plugin));
-       sstrncpy (vl.type, "swap", sizeof (vl.type));
        sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
 
        plugin_dispatch_values (&vl);
@@ -168,6 +180,8 @@ static int swap_read (void)
        unsigned long long swap_cached = 0LL;
        unsigned long long swap_free   = 0LL;
        unsigned long long swap_total  = 0LL;
+       unsigned long long swap_in     = 0LL;
+       unsigned long long swap_out    = 0LL;
 
        if ((fh = fopen ("/proc/meminfo", "r")) == NULL)
        {
@@ -210,9 +224,46 @@ static int swap_read (void)
 
        swap_used = swap_total - (swap_free + swap_cached);
 
-       swap_submit ("used", swap_used);
-       swap_submit ("free", swap_free);
-       swap_submit ("cached", swap_cached);
+       if ((fh = fopen ("/proc/vmstat", "r")) == NULL)
+       {
+               char errbuf[1024];
+               WARNING ("swap: fopen: %s",
+                               sstrerror (errno, errbuf, sizeof (errbuf)));
+               return (-1);
+       }
+
+       while (fgets (buffer, 1024, fh) != NULL)
+       {
+               unsigned long long *val = NULL;
+
+               if (strncasecmp (buffer, "pswpin", 6) == 0)
+                       val = &swap_in;
+               else if (strncasecmp (buffer, "pswpout", 7) == 0)
+                       val = &swap_out;
+               else
+                       continue;
+
+               numfields = strsplit (buffer, fields, 8);
+
+               if (numfields < 2)
+                       continue;
+
+               *val = atoll (fields[1]);
+       }
+
+       if (fclose (fh))
+       {
+               char errbuf[1024];
+               WARNING ("swap: fclose: %s",
+                               sstrerror (errno, errbuf, sizeof (errbuf)));
+       }
+
+       swap_submit ("used", swap_used, DS_TYPE_GAUGE);
+       swap_submit ("free", swap_free, DS_TYPE_GAUGE);
+       swap_submit ("cached", swap_cached, DS_TYPE_GAUGE);
+       swap_submit ("in", swap_in, DS_TYPE_DERIVE);
+       swap_submit ("out", swap_out, DS_TYPE_DERIVE);
+
 /* #endif KERNEL_LINUX */
 
 #elif HAVE_LIBKSTAT

diff --git a/src/types.db b/src/types.db
index ec92f4b..dd37cc1 100644 (file)
--- a/src/types.db
+++ b/src/types.db
@@ -120,6 +120,7 @@ signal_quality              value:GAUGE:0:U
 spam_check             value:GAUGE:0:U
 spam_score             value:GAUGE:U:U
 swap                   value:GAUGE:0:1099511627776
+swap_io                        value:DERIVE:0:1099511627776
 tcp_connections                value:GAUGE:0:4294967295
 temperature            value:GAUGE:-273.15:U
 time_dispersion                seconds:GAUGE:-1000000:1000000