blob: 42fb6ca5c18237c16435a1360d981174809a778b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
#!/bin/sh
################################################################################
# options
while getopts ckh flag
do
case $flag in
c)
RUN_COMBINED=true
;;
k)
KEEP_EXISTING_DATA=true
;;
h)
echo "Usage: $0 [-c] [case-*]"
exit
;;
esac
done
shift $(($OPTIND - 1))
[ $(whoami) != root ] && echo "root privilege required" && exit
################################################################################
# stats
reset_stats () {
echo 0 > /proc/lock_stat
echo 1 > /sys/kernel/debug/gcov/reset
}
save_stats () {
base_dir=$(pwd)
mkdir -p $1
(
cd $1
cp /proc/lock_stat . && chmod go+r lock_stat
$base_dir/gcov-mm
$base_dir/gcov-fun mm/*.?.gcov | sort -nr > top-functions
$base_dir/gcov-lock mm/*.?.gcov | sort -nr -k4 > top-locks
rm mm/*.gcno mm/*.gcda
)
}
perf_events="
cpu-cycles
instructions
cache-references
cache-misses
branch-instructions
branch-misses
bus-cycles
cpu-clock
task-clock
page-faults
minor-faults
major-faults
context-switches
cpu-migrations
LLC-loads
LLC-load-misses
LLC-stores
LLC-store-misses
LLC-prefetches
LLC-prefetch-misses
dTLB-loads
dTLB-load-misses
dTLB-stores
dTLB-store-misses
lock:lock_acquire
lock:lock_release
lock:lock_contended
lock:lock_acquired
syscalls:sys_enter_mmap
syscalls:sys_enter_mmap_pgoff
syscalls:sys_enter_brk
syscalls:sys_enter_msync
syscalls:sys_enter_mremap
syscalls:sys_enter_mprotect
syscalls:sys_enter_mbind
syscalls:sys_enter_migrate_pages
syscalls:sys_enter_mlock
syscalls:sys_enter_munlock
syscalls:sys_enter_mlockall
syscalls:sys_enter_munlockall
syscalls:sys_enter_remap_file_pages
"
perf_events=$(echo $perf_events | sed 's/ / -e /g')
################################################################################
# run it
. ./hw_vars
OUT_DIR=$(hostname)-${nr_task}c-$(((mem + (1<<29))>>30))g
TEST_CASES=${@:-$(echo case-*)}
echo $((1<<30)) > /proc/sys/vm/max_map_count
echo $((1<<20)) > /proc/sys/kernel/threads-max
echo 1 > /proc/sys/vm/overcommit_memory
echo 3 > /proc/sys/vm/drop_caches
mount_tmpfs
create_sparse_root
for testcase in $TEST_CASES
do
[ "${testcase#*000}" != "$testcase" ] && continue
[ -x "./$testcase" ] || continue
[[ -n $KEEP_EXISTING_DATA && -d $OUT_DIR/$testcase ]] && continue
reset_stats
echo $testcase
./$testcase || break
save_stats $OUT_DIR/$testcase
# run again to collect perf stats
perf stat -a -e $perf_events -o $OUT_DIR/$testcase/perf-stat ./$testcase
perf record -afg -o $TMPFS_MNT/perf.data ./$testcase 2>/dev/null || continue
perf report -g fractal,5 -i $TMPFS_MNT/perf.data 2>/dev/null > $OUT_DIR/$testcase/perf-report
done
./elapsed-time $OUT_DIR
remove_tmpfs
remove_sparse_root
################################################################################
# run combined
[ -z "$RUN_COMBINED" ] && exit # only run combined cases when asked
kill_detached() {
for pidfile in $SPARSE_ROOT/*.pid
do
[ -s "$pidfile" ] && kill -INT $(cat $pidfile)
rm $pidfile
done
}
for testcase in $TEST_CASES
do
for testcase2 in $TEST_CASES
do
[ -x "./$testcase" ] || continue
[ -x "./$testcase2" ] || continue
[ $testcase = $testcase2 ] && continue
order="$testcase\n$testcase2"
order2=$(echo $order | sort)
[ $order != $order2 ] && continue
[ "${testcase2#*000}" != "$testcase2" ] && continue
reset_stats
if [ "${testcase#*000}" != "$testcase" ]; then
./$testcase # take some memory (mem/3)
./$testcase2 # flush memory (mem*10)
else
./$testcase &
./$testcase2 &
wait
fi
save_stats $OUT_DIR/$testcase-$testcase2
kill_detached
done
done
|
