From: Manuel CISSÉ <manuel_cisse@yahoo.fr>
Date: Thu, 20 Feb 2014 15:06:56 +0000 (+0100)
Subject: memory plugin: Add slab memory stats (linux)
X-Git-Tag: collectd-5.5.0~186
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=002fec64b13f6618d5588d0590998a4b3b82bc57;p=collectd.git

memory plugin: Add slab memory stats (linux)

Pull-Request: #560
---

diff --git a/src/memory.c b/src/memory.c
index c503821b..8166accd 100644
--- a/src/memory.c
+++ b/src/memory.c
@@ -283,6 +283,8 @@ static int memory_read_internal (value_list_t *vl)
 	gauge_t mem_buffered = 0;
 	gauge_t mem_cached = 0;
 	gauge_t mem_free = 0;
+	gauge_t mem_slab_reclaimable = 0;
+	gauge_t mem_slab_unreclaimable = 0;
 
 	if ((fh = fopen ("/proc/meminfo", "r")) == NULL)
 	{
@@ -304,6 +306,10 @@ static int memory_read_internal (value_list_t *vl)
 			val = &mem_buffered;
 		else if (strncasecmp (buffer, "Cached:", 7) == 0)
 			val = &mem_cached;
+		else if (strncasecmp (buffer, "SReclaimable:", 13) == 0)
+			val = &mem_slab_reclaimable;
+		else if (strncasecmp (buffer, "SUnreclaim:", 11) == 0)
+			val = &mem_slab_unreclaimable;
 		else
 			continue;
 
@@ -324,11 +330,13 @@ static int memory_read_internal (value_list_t *vl)
 	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);
+	mem_used = mem_total - (mem_free + mem_buffered + mem_cached + mem_slab_unreclaimable + mem_slab_reclaimable);
+	MEMORY_SUBMIT ("used",        mem_used,
+	               "buffered",    mem_buffered,
+	               "cached",      mem_cached,
+	               "free",        mem_free,
+	               "slab_unrecl", mem_slab_unreclaimable,
+	               "slab_recl",   mem_slab_reclaimable);
 /* #endif KERNEL_LINUX */
 
 #elif HAVE_LIBKSTAT