From bc02e5423d097aff5280a849b7c6e6cf5d63ef96 Mon Sep 17 00:00:00 2001
From: David Wolinsky <davidiw@fb.com>
Date: Thu, 8 Oct 2015 16:05:20 -0700
Subject: [io-cache] cache statfs

Summary:
cache calls to statfs
- io-cache must be enabled
- then enable statfs caching
- also can configure an independent cache time

Test Plan: unit test basic/cache.t

Reviewers: rwareing, sshreyas

Subscribers: rappleye

Differential Revision: https://phabricator.fb.com/D2524471

Change-Id: I55e0a773f9e24c2358d6fbbabbaf58bd5bd89ffc
Tasks: 8618383
Reviewed-on: https://review.gluster.org/17771
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Jeff Darcy <jeff@pl.atyp.us>
Tested-by: Jeff Darcy <jeff@pl.atyp.us>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
---
 tests/basic/cache.t | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 tests/basic/cache.t

(limited to 'tests/basic')

diff --git a/tests/basic/cache.t b/tests/basic/cache.t
new file mode 100644
index 00000000000..92251732f4a
--- /dev/null
+++ b/tests/basic/cache.t
@@ -0,0 +1,69 @@
+#!/bin/bash
+#
+
+FILE=/var/log/glusterfs/samples/glusterfs_patchy.samp
+rm $FILE
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+
+function print_cnt() {
+  local FOP_TYPE=$1
+  local FOP_CNT=$(grep ,${FOP_TYPE} $FILE | wc -l)
+  echo $FOP_CNT
+}
+
+function print_avg() {
+  local FOP_TYPE=$1
+  local FILE=/var/log/glusterfs/samples/glusterfs_patchy.samp
+  local FOP_AVG=$(grep -oE "${FOP_TYPE},[0-9]+\." ${FILE} | grep -oE '[0-9]+' | awk 'NR == 1 { sum = 0 } { sum += $1; } END {printf "%d", sum/NR}')
+  echo $FOP_AVG
+}
+
+cleanup;
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 replica 3 $H0:$B0/${V0}{0,1,2}
+TEST $CLI volume set $V0 nfs.disable off
+TEST $CLI volume set $V0 diagnostics.latency-measurement on
+TEST $CLI volume set $V0 diagnostics.count-fop-hits on
+TEST $CLI volume set $V0 diagnostics.fop-sample-buf-size 65535
+TEST $CLI volume set $V0 diagnostics.fop-sample-interval 1
+TEST $CLI volume set $V0 diagnostics.stats-dump-interval 1
+TEST $CLI volume start $V0
+TEST glusterfs --volfile-id=/$V0 --volfile-server=$H0 $M0 --attribute-timeout=0 --entry-timeout=0
+
+for i in {1..100}
+do
+        df $M0 &> /dev/null
+done
+
+sleep 6
+
+# Get average
+STATFS_CNT0=$(print_cnt STATFS)
+TEST [ "$STATFS_CNT0" -gt "0" ]
+STATFS_AVG0=$(print_avg STATFS)
+# Make it easier to compute averages
+rm $FILE
+
+TEST $CLI volume set $V0 performance.nfs.io-cache on
+TEST $CLI volume set $V0 performance.statfs-cache on
+TEST $CLI volume set $V0 performance.statfs-cache-timeout 10
+
+for i in {1..100}
+do
+        df $M0 &> /dev/null
+done
+
+sleep 6
+
+# Get average
+STATFS_CNT1=$(print_cnt STATFS)
+TEST [ "$STATFS_CNT1" -eq "$STATFS_CNT0" ]
+STATFS_AVG1=$(print_avg STATFS)
+
+# Verify that cached average * 10 is still faster than uncached
+STATFS_AVG1x10=$(($STATFS_AVG1 * 10))
+TEST [ "$STATFS_AVG0" -gt "$STATFS_AVG1x10" ]
+#cleanup
-- 
cgit