From 3099cd5efceebcbbc5ab1202c2b183ccd4453a65 Mon Sep 17 00:00:00 2001
From: johannst <johannes.stoelp@gmail.com>
Date: Sat, 14 Mar 2020 14:10:41 +0100
Subject: split debug.txt into mdbook chapters

---
 src/pidstat.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 src/pidstat.md

(limited to 'src/pidstat.md')

diff --git a/src/pidstat.md b/src/pidstat.md
new file mode 100644
index 0000000..c17a2e6
--- /dev/null
+++ b/src/pidstat.md
@@ -0,0 +1,13 @@
+# pidstat(1)
+
+Trace minor/major page faults.
+```markdown
+pidstat -r -p <pid> [interval]
+  minor_pagefault: happens when the page needed is already in memory but not
+                   allocated to the faulting process, in that case the kernel
+                   only has to create a new page-table entry pointing to the
+                   shared physical page
+  major_pagefault: happends when the page needed is NOT in memory, the kernel
+                   has to create a new page-table entry and populate the
+                   physical page
+```
-- 
cgit v1.2.3