From 5a7ec3a38a143928f91baa9d357eacbb8afd0d75 Mon Sep 17 00:00:00 2001
From: Ludovic Pouzenc <ludovic@pouzenc.fr>
Date: Fri, 5 May 2017 15:40:27 +0200
Subject: notes about cgroup for io

---
 draft/limit-io.txt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 draft/limit-io.txt

diff --git a/draft/limit-io.txt b/draft/limit-io.txt
new file mode 100644
index 0000000..04307bb
--- /dev/null
+++ b/draft/limit-io.txt
@@ -0,0 +1,16 @@
+
+mount -t tmpfs cgroup_root /sys/fs/cgroup
+mkdir -p /sys/fs/cgroup/blkio
+mount -t cgroup -o blkio none /sys/fs/cgroup/blkio
+
+
+dev=/dev/sda
+limit=10485760 # 10MBps
+mycg=/sys/fs/cgroup/blkio/limit_write/
+
+devnode=$(stat -c'%t:%T' /dev/sda)
+mkdir -p $mycg
+echo "$devnode $limit" > $mycg/blkio.throttle.write_bps_device 
+
+echo $PID > $mycg/tasks
+
-- 
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