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Message-Id: <1259486553-4037-1-git-send-email-penberg@cs.helsinki.fi>
Date: Sun, 29 Nov 2009 11:22:33 +0200
From: Pekka Enberg <penberg@...helsinki.fi>
To: linux-kernel@...r.kernel.org
Cc: Pekka Enberg <penberg@...helsinki.fi>,
Christoph Lameter <cl@...ux-foundation.org>
Subject: [PATCH] SLAB: Make synthetic benchmark output more readable
This patch makes the synthetic SLAB benchmark output easier to read by hymans
and easier to post-process with scripts. The output looks as follows:
Single thread testing
=====================
1. Kmalloc: Repeatedly allocate then free test
Times Size kmalloc kfree
10000 8 181 170
10000 16 185 173
10000 32 129 161
10000 64 141 156
10000 128 179 183
10000 256 204 246
10000 512 242 374
10000 1024 267 470
10000 2048 290 506
10000 4096 376 559
10000 8192 508 664
10000 16384 800 887
2. Kmalloc: alloc/free test
Times Size kmalloc/kfree
10000 8 197
10000 16 186
10000 32 195
10000 64 176
10000 128 176
10000 256 183
10000 512 186
10000 1024 186
10000 2048 198
10000 4096 186
10000 8192 186
10000 16384 882
Concurrent allocs
=================
Kmalloc N*alloc N*free
Size CPU0 CPU1 Average
8 129/181 124/180 126/180
16 150/166 158/164 154/165
32 154/190 151/192 152/191
64 195/215 192/211 193/213
128 341/375 229/306 285/341
256 263/472 297/484 280/478
512 356/588 348/597 352/593
1024 375/625 375/623 375/624
2048 451/593 377/638 414/615
4096 546/816 545/853 545/835
Kmalloc N*(alloc free)
Size CPU0 CPU1 Average
8 256 209 233
16 200 186 193
32 235 196 216
64 217 177 197
128 186 186 186
256 256 233 244
512 215 189 202
1024 203 186 195
2048 292 248 270
4096 211 211 211
Remote free test
================
N*remote free
Size CPU0 CPU1 Average
8 7/180 128/0 67/90
16 7/183 131/0 69/91
32 32/186 150/0 91/93
64 7/225 186/0 97/112
128 7/213 225/0 116/106
256 7/271 241/0 124/135
512 7/397 294/0 150/198
1024 7/510 271/0 139/255
2048 7/480 296/0 151/240
4096 7/565 394/0 200/282
1 alloc N free test
===================
1 alloc N free
Size CPU0 CPU1 Average
8 182 129 155
16 212 148 180
32 222 150 186
64 370 265 318
128 686 491 588
256 406 264 335
512 798 646 722
1024 379 218 299
2048 405 243 324
4096 539 321 430
Cc: Christoph Lameter <cl@...ux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@...helsinki.fi>
---
tests/slab_test.c | 51 ++++++++++++++++++++++++++++++++++-----------------
1 files changed, 34 insertions(+), 17 deletions(-)
diff --git a/tests/slab_test.c b/tests/slab_test.c
index 467b928..e97afc4 100644
--- a/tests/slab_test.c
+++ b/tests/slab_test.c
@@ -194,9 +194,20 @@ static int test_func(void *private)
return 0;
}
+static void print_concurrent_test_header(const char *name)
+{
+ int cpu;
+
+ printk(KERN_ALERT "%s\n", name);
+ printk(KERN_ALERT "Size\t");
+ for_each_online_cpu(cpu)
+ printk(KERN_CONT "CPU%d\t", cpu);
+ printk(KERN_CONT "Average\n");
+}
+
static void do_concurrent_test(void (*p1)(struct test_struct *),
void (*p2)(struct test_struct *),
- int size, const char *name)
+ int size)
{
int cpu;
unsigned long time1 = 0;
@@ -247,7 +258,7 @@ static void do_concurrent_test(void (*p1)(struct test_struct *),
for_each_online_cpu(cpu)
kthread_stop(test[cpu].task);
- printk(KERN_ALERT "%s(%d):", name, size);
+ printk(KERN_ALERT "%d\t", size);
for_each_online_cpu(cpu) {
struct test_struct *t = &test[cpu];
@@ -255,14 +266,15 @@ static void do_concurrent_test(void (*p1)(struct test_struct *),
time2 = t->stop2 - t->start2;
sum1 += time1;
sum2 += time2;
- printk(" %d=%lu", cpu, time1 / TEST_COUNT);
+ printk(KERN_CONT "%lu", time1 / TEST_COUNT);
if (p2)
- printk("/%lu", time2 / TEST_COUNT);
+ printk(KERN_CONT "/%lu", time2 / TEST_COUNT);
+ printk(KERN_CONT "\t");
}
- printk(" Average=%lu", sum1 / num_online_cpus() / TEST_COUNT);
+ printk(KERN_CONT "%lu", sum1 / num_online_cpus() / TEST_COUNT);
if (p2)
- printk("/%lu", sum2 / num_online_cpus() / TEST_COUNT);
- printk("\n");
+ printk(KERN_CONT "/%lu", sum2 / num_online_cpus() / TEST_COUNT);
+ printk(KERN_CONT "\n");
schedule_timeout(200);
}
#endif
@@ -280,6 +292,7 @@ static int slab_test_init(void)
printk(KERN_ALERT "Single thread testing\n");
printk(KERN_ALERT "=====================\n");
printk(KERN_ALERT "1. Kmalloc: Repeatedly allocate then free test\n");
+ printk(KERN_ALERT "Times\tSize\tkmalloc\tkfree\n");
for (size = 8; size <= PAGE_SIZE << 2; size <<= 1) {
time1 = get_cycles();
for (i = 0; i < TEST_COUNT; i++) {
@@ -291,9 +304,9 @@ static int slab_test_init(void)
time2 = get_cycles();
time = time2 - time1;
- printk(KERN_ALERT "%i times kmalloc(%d) ", i, size);
+ printk(KERN_ALERT "%i\t%d\t", i, size);
time = div_u64_rem(time, TEST_COUNT, &rem);
- printk("-> %llu cycles ", time);
+ printk("%llu\t", time);
time1 = get_cycles();
for (i = 0; i < TEST_COUNT; i++) {
@@ -305,12 +318,12 @@ static int slab_test_init(void)
time2 = get_cycles();
time = time2 - time1;
- printk("kfree ");
time = div_u64_rem(time, TEST_COUNT, &rem);
- printk("-> %llu cycles\n", time);
+ printk("%llu\n", time);
}
printk(KERN_ALERT "2. Kmalloc: alloc/free test\n");
+ printk(KERN_ALERT "Times\tSize\tkmalloc/kfree\n");
for (size = 8; size <= PAGE_SIZE << 2; size <<= 1) {
time1 = get_cycles();
for (i = 0; i < TEST_COUNT; i++) {
@@ -321,38 +334,42 @@ static int slab_test_init(void)
time2 = get_cycles();
time = time2 - time1;
- printk(KERN_ALERT "%i times kmalloc(%d)/kfree ", i, size);
+ printk(KERN_ALERT "%i\t%d\t", i, size);
time = div_u64_rem(time, TEST_COUNT, &rem);
- printk("-> %llu cycles\n", time);
+ printk("%llu\n", time);
}
kfree(v);
#ifdef CONFIG_SMP
printk(KERN_INFO "Concurrent allocs\n");
printk(KERN_INFO "=================\n");
+ print_concurrent_test_header("Kmalloc N*alloc N*free");
for (i = 3; i <= PAGE_SHIFT; i++) {
do_concurrent_test(kmalloc_alloc_then_free_test_p1,
kmalloc_alloc_then_free_test_p2,
- 1 << i, "Kmalloc N*alloc N*free");
+ 1 << i);
}
+ print_concurrent_test_header("Kmalloc N*(alloc free)");
for (i = 3; i <= PAGE_SHIFT; i++) {
do_concurrent_test(kmalloc_alloc_free_test_p1, NULL,
- 1 << i, "Kmalloc N*(alloc free)");
+ 1 << i);
}
printk(KERN_INFO "Remote free test\n");
printk(KERN_INFO "================\n");
+ print_concurrent_test_header("N*remote free");
for (i = 3; i <= PAGE_SHIFT; i++) {
do_concurrent_test(remote_free_test_p1,
remote_free_test_p2,
- 1 << i, "N*remote free");
+ 1 << i);
}
printk(KERN_INFO "1 alloc N free test\n");
printk(KERN_INFO "===================\n");
+ print_concurrent_test_header("1 alloc N free");
for (i = 3; i <= PAGE_SHIFT; i++) {
do_concurrent_test(alloc_n_free_test_p1,
NULL,
- 1 << i, "1 alloc N free");
+ 1 << i);
}
#endif
--
1.6.3.3
--
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