From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: mhocko@suse.com, vbabka@suse.cz, mgorman@suse.de,
minchan@kernel.org, aneesh.kumar@linux.vnet.ibm.com,
bsingharora@gmail.com, srikar@linux.vnet.ibm.com,
haren@linux.vnet.ibm.com, jglisse@redhat.com,
dave.hansen@intel.com
Subject: [DEBUG 12/12] test: Add a script to perform random VMA migrations across nodes
Date: Tue, 22 Nov 2016 19:49:48 +0530 [thread overview]
Message-ID: <1479824388-30446-13-git-send-email-khandual@linux.vnet.ibm.com> (raw)
In-Reply-To: <1479824388-30446-1-git-send-email-khandual@linux.vnet.ibm.com>
This is a test script which creates a workload (e.g ebizzy) and go through
it's VMAs (/proc/pid/maps) and initiate migration to random nodes which can
be either system memory node or coherent memory node.
Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
---
tools/testing/selftests/vm/cdm_migration.sh | 76 +++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
create mode 100755 tools/testing/selftests/vm/cdm_migration.sh
diff --git a/tools/testing/selftests/vm/cdm_migration.sh b/tools/testing/selftests/vm/cdm_migration.sh
new file mode 100755
index 0000000..fab11ed
--- /dev/null
+++ b/tools/testing/selftests/vm/cdm_migration.sh
@@ -0,0 +1,76 @@
+#!/usr/bin/bash
+#
+# Should work with any workoad and workload commandline.
+# But for now ebizzy should be installed. Please run it
+# as root.
+#
+# Copyright (C) Anshuman Khandual 2016, IBM Corporation
+#
+# Licensed under GPL V2
+
+# Unload, build and reload modules
+if [ "$1" = "reload" ]
+then
+ rmmod coherent_memory_demo
+ rmmod coherent_hotplug_demo
+ cd ../../../../
+ make -s -j 64 modules
+ insmod drivers/char/coherent_hotplug_demo.ko
+ insmod drivers/char/coherent_memory_demo.ko
+ cd -
+fi
+
+# Workload
+workload=ebizzy
+work_cmd="ebizzy -T -z -m -t 128 -n 100000 -s 32768 -S 10000"
+
+pkill $workload
+$work_cmd &
+
+# File
+if [ -e input_file.txt ]
+then
+ rm input_file.txt
+fi
+
+# Inputs
+pid=`pidof ebizzy`
+cp /proc/$pid/maps input_file.txt
+if [ ! -e input_file.txt ]
+then
+ echo "Input file was not created"
+ exit
+fi
+input=input_file.txt
+
+# Migrations
+dmesg -C
+while read line
+do
+ addr_start=$(echo $line | cut -d '-' -f1)
+ addr_end=$(echo $line | cut -d '-' -f2 | cut -d ' ' -f1)
+ node=`expr $RANDOM % 5`
+
+ echo $pid,0x$addr_start,0x$addr_end,$node > /sys/kernel/debug/coherent_debug
+done < "$input"
+
+# Analyze dmesg output
+passed=`dmesg | grep "migration_passed" | wc -l`
+failed=`dmesg | grep "migration_failed" | wc -l`
+queuef=`dmesg | grep "queue_pages_range_failed" | wc -l`
+empty=`dmesg | grep "list_empty" | wc -l`
+missing=`dmesg | grep "vma_missing" | wc -l`
+
+# Stats
+echo passed $passed
+echo failed $failed
+echo queuef $queuef
+echo empty $empty
+echo missing $missing
+
+# Cleanup
+rm input_file.txt
+if pgrep -x $workload > /dev/null
+then
+ pkill $workload
+fi
--
1.8.3.1
prev parent reply other threads:[~2016-11-22 14:20 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-22 14:19 [RFC 0/4] Define coherent device memory node Anshuman Khandual
2016-11-22 14:19 ` [RFC 1/4] mm: " Anshuman Khandual
2016-11-29 17:57 ` Dave Hansen
2016-11-30 11:46 ` Anshuman Khandual
2016-11-22 14:19 ` [RFC 2/4] mm/cpuset: Exclude coherent device memory nodes from mems_allowed Anshuman Khandual
2016-11-22 14:19 ` [RFC 3/4] mm/hugetlb: Restrict HugeTLB page allocations only to system ram nodemask Anshuman Khandual
2016-11-22 14:19 ` [RFC 4/4] mm: Ignore cpuset enforcement when allocation flag has __GFP_THISNODE Anshuman Khandual
2016-11-28 21:12 ` Dave Hansen
2016-11-29 6:51 ` Anshuman Khandual
2016-11-29 16:52 ` Dave Hansen
2016-11-30 11:17 ` Anshuman Khandual
2016-11-30 19:43 ` Dave Hansen
2016-11-22 14:19 ` [DEBUG 05/12] powerpc/mm: Identify coherent device memory nodes during platform init Anshuman Khandual
2016-11-22 14:19 ` [DEBUG 06/12] powerpc/mm: Create numa nodes for hotplug memory Anshuman Khandual
2016-11-22 14:19 ` [DEBUG 07/12] powerpc/mm: Allow memory hotplug into a memory less node Anshuman Khandual
2016-11-22 14:19 ` [DEBUG 08/12] mm: Enable CONFIG_MOVABLE_NODE on powerpc Anshuman Khandual
2016-11-22 14:19 ` [DEBUG 09/12] powerpc: Enable CONFIG_MOVABLE_NODE for PPC64 platform Anshuman Khandual
2016-11-22 14:19 ` [DEBUG 10/12] mm: Add a new migration function migrate_virtual_range() Anshuman Khandual
2016-11-22 14:19 ` [DEBUG 11/12] drivers: Add two drivers for coherent device memory tests Anshuman Khandual
2016-11-22 14:19 ` Anshuman Khandual [this message]
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