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paul_a pushed a commit to branch 41120-memory
in repository https://gitbox.apache.org/repos/asf/cloudstack.git
commit 90f4cb936941971b6598457c552e3d68acbf9a59
Author: Paul Angus <paul.an...@shapeblue.com>
AuthorDate: Fri Nov 23 15:16:17 2018 +0000
add cache backpressure
---
systemvm/debian/etc/sysctl.conf | 3 +++
1 file changed, 3 insertions(+)
diff --git a/systemvm/debian/etc/sysctl.conf b/systemvm/debian/etc/sysctl.conf
index 5b5f818..e6c2a34 100644
--- a/systemvm/debian/etc/sysctl.conf
+++ b/systemvm/debian/etc/sysctl.conf
@@ -63,3 +63,6 @@ net.ipv6.conf.all.autoconf = 0
# Minimum swappiness without disabling it
vm.swappiness=1
+
+# make the kernel more aggressive in reclaiming RAM from the disk and swap
caches
+vm.vfs_cache_pressure = 50
