LMbench benchmark
Introduction
Results
Test Environment
Resources
[29 October 2002] Test results are available for Linux SMP kernel 2.2.19, 2.4.17, 2.5.30, 2.5.36, and 2.5.41 running on a 4-way 500 MHz, 512 KB L2 cache, and 2.5 GB memory.
Simple function latency. Data are times in microseconds.
|
Test Cases |
2.2.19smp4 |
2.4.17smp4 |
2.5.30smp4 |
2.5.36smp4 |
2.5.41smp4 |
|
Simple syscall |
0.68 |
0.65 |
0.70 |
0.67 |
0.67 |
|
Simple read |
1.13 |
1.17 |
1.38 |
1.37 |
1.42 |
|
Simple write |
1.03 |
1.04 |
1.26 |
1.20 |
1.23 |
|
Simple stat |
6.11 |
7.95 |
6.92 |
7.40 |
7.52 |
|
Simple fstat |
1.36 |
1.51 |
1.61 |
1.62 |
1.69 |
|
Simple open/close |
7.87 |
10.02 |
10.36 |
9.57 |
9.93 |
|
Select on 10 fd's |
3.35 |
6.36 |
6.03 |
6.21 |
6.50 |
|
Select on 100 fd's |
9.34 |
44.41 |
39.10 |
41.09 |
46.36 |
|
Select on 250 fd's |
19.53 |
98.41 |
91.15 |
106.25 |
99.69 |
|
Select on 500 fd's |
36.82 |
194.21 |
179.97 |
193.45 |
195.85 |
|
Select on 10 tcp fd's |
5.68 |
7.88 |
7.40 |
8.08 |
8.66 |
|
Select on 100 tcp fd's |
28.18 |
54.40 |
48.59 |
58.04 |
59.39 |
|
Select on 250 tcp fd's |
66.58 |
143.10 |
135.12 |
143.69 |
157.36 |
|
Select on 500 tcp fd's |
130.65 |
273.85 |
232.95 |
276.00 |
269.23 |
|
Signal handler installation |
1.77 |
1.73 |
1.78 |
1.82 |
1.83 |
|
Signal handler overhead |
2.66 |
5.41 |
5.61 |
5.71 |
5.85 |
|
Protection fault |
1.55 |
1.49 |
1.41 |
1.59 |
1.47 |
|
Pipe latency |
9.69 |
14.08 |
11.06 |
11.81 |
12.33 |
|
AF_UNIX sock stream latency |
18.65 |
35.16 |
20.49 |
21.21 |
22.71 |
|
Process fork+exit |
419.62 |
537.40 |
514.82 |
495.58 |
504.64 |
|
Process fork+execve |
1549.50 |
1740.25 |
1835.33 |
1792.83 |
1820.94 |
|
Process fork+/bin/sh -c |
66320 |
8101 |
8408 |
8353 |
8644 |
File system throughput. Data are number of creations or removals per second.
|
File Size |
2.2.19smp4 |
2.4.17smp4 |
2.5.30smp4 |
2.5.36smp4 |
2.5.41smp4 |
|
Creations |
|||||
|
0k |
15507 |
7296 |
12758 |
12675 |
11854 |
|
1k |
8890 |
5536 |
7591 |
7424 |
6861 |
|
4k |
8240 |
5312 |
7151 |
6936 |
6528 |
|
10k |
5422 |
4249 |
4892 |
4729 |
4594 |
|
Removals |
|||||
|
0k |
114824 |
87352 |
96034 |
95150 |
89692 |
|
1k |
48061 |
59744 |
41353 |
38498 |
35964 |
|
4k |
47813 |
60017 |
41324 |
38463 |
35976 |
|
10k |
33022 |
51677 |
29619 |
28773 |
26204 |
Communication latency and bandwidth. Data are times in microseconds for latency and MB/sec for bandwidth.
|
2.2.19smp4 |
2.4.17smp4 |
2.5.30smp4 |
2.5.36smp4 |
2.5.41smp4 |
|
|
UDP latency using localhost |
51.92 |
58.37 |
34.74 |
38.25 |
38.35 |
|
TCP latency using localhost |
63.53 |
85.78 |
56.56 |
55.95 |
60.23 |
|
RPC/tcp latency using localhost |
114.37 |
131.03 |
120.22 |
121.67 |
125.97 |
|
RPC/udp latency using localhost |
88.44 |
104.66 |
90.75 |
91.45 |
93.05 |
|
TCP/IP connection cost to localhost |
123.78 |
189.86 |
191.91 |
186.97 |
202.75 |
|
Note: Latency is in microseconds |
|||||
|
Socket bandwidth using localhost |
110.44 |
79.55 |
128.51 |
100.18 |
88.03 |
|
AF_UNIX sock stream bandwidth |
220.16 |
142.48 |
169.74 |
165.71 |
158.29 |
|
Pipe bandwidth |
217.31 |
324.53 |
232.96 |
234.54 |
188.02 |
|
Note: Bandwidth is in MB/sec |
Context switching latency. Data are times in microseconds.
|
Test Cases |
2.2.19smp4 |
2.4.17smp4 |
2.5.30smp4 |
2.5.36smp4 |
2.5.41smp4 |
|
size=0k |
|||||
|
2 |
1.88 |
3.23 |
1.93 |
2.29 |
2.38 |
|
4 |
2.79 |
4.09 |
2.57 |
2.91 |
3.05 |
|
8 |
3.03 |
4.48 |
3.31 |
3.47 |
3.80 |
|
16 |
3.12 |
4.63 |
3.38 |
3.53 |
3.93 |
|
24 |
3.13 |
4.87 |
3.36 |
3.65 |
3.91 |
|
32 |
3.2 |
4.9 |
3.43 |
3.86 |
4.07 |
|
64 |
4.06 |
5.09 |
3.9 |
4.02 |
4.24 |
|
96 |
4.54 |
5.57 |
4.23 |
4.32 |
4.56 |
|
size=4k |
|||||
|
2 |
2.71 |
4.49 |
2.5 |
2.79 |
3.29 |
|
4 |
4.68 |
6.84 |
5.94 |
5.20 |
6.11 |
|
8 |
5.7 |
7.65 |
6.02 |
6.57 |
6.75 |
|
16 |
5.64 |
7.66 |
6.16 |
6.53 |
6.70 |
|
24 |
5.64 |
7.69 |
7.33 |
6.63 |
7.18 |
|
32 |
5.64 |
7.6 |
8.36 |
7.07 |
7.61 |
|
64 |
6.72 |
7.92 |
9.69 |
7.77 |
8.88 |
|
96 |
8.78 |
9.35 |
10.34 |
8.65 |
9.42 |
|
size=8k |
|||||
|
2 |
5.48 |
7.36 |
5.36 |
5.32 |
6.15 |
|
4 |
8.18 |
10.05 |
8.33 |
8.45 |
9.22 |
|
8 |
8.12 |
10.04 |
8.56 |
8.85 |
9.52 |
|
16 |
8.05 |
10.04 |
11.55 |
10.02 |
10.35 |
|
24 |
8.06 |
10.11 |
13.41 |
10.76 |
11.55 |
|
32 |
8.03 |
10.21 |
13.94 |
12.12 |
12.59 |
|
64 |
10.35 |
11.95 |
13.02 |
12.54 |
13.19 |
|
96 |
15.33 |
15.4 |
12.42 |
13.20 |
13.10 |
|
size=16k |
|||||
|
2 |
14 |
15.7 |
15.91 |
14.08 |
14.59 |
|
4 |
14.03 |
16.04 |
18.85 |
14.95 |
16.65 |
|
8 |
14 |
15.94 |
19.59 |
17.73 |
18.78 |
|
16 |
13.97 |
16.21 |
21.21 |
19.75 |
20.10 |
|
24 |
16.38 |
16.46 |
21 |
19.91 |
20.36 |
|
32 |
16.54 |
16.87 |
21.04 |
19.72 |
20.46 |
|
64 |
30.9 |
20.91 |
18.8 |
20.01 |
19.75 |
|
96 |
43.15 |
21.78 |
22.4 |
22.38 |
23.64 |
|
size=32k |
|||||
|
2 |
22.75 |
24.98 |
28.42 |
27.87 |
27.71 |
|
4 |
22.85 |
24.96 |
29.7 |
29.12 |
28.28 |
|
8 |
22.77 |
24.92 |
30.8 |
29.39 |
29.40 |
|
16 |
31.55 |
24.91 |
30.03 |
30.01 |
29.90 |
|
24 |
49.55 |
26 |
30.28 |
29.90 |
29.73 |
|
32 |
46.52 |
37.44 |
30.12 |
28.60 |
28.48 |
|
64 |
89 |
38.79 |
42.45 |
45.15 |
46.95 |
|
96 |
104.83 |
43.7 |
53.54 |
61.91 |
67.29 |
|
size=64k |
|||||
|
2 |
40.68 |
42.65 |
46.12 |
45.76 |
45.70 |
|
4 |
40.76 |
43.23 |
47.3 |
46.95 |
46.19 |
|
8 |
40.81 |
43.02 |
47.42 |
48.51 |
47.83 |
|
16 |
41.46 |
57.38 |
48.77 |
48.75 |
50.03 |
|
24 |
89.82 |
54.24 |
51.69 |
49.29 |
50.69 |
|
32 |
154.63 |
61.99 |
52.89 |
51.61 |
53.40 |
|
64 |
212.44 |
91.55 |
101.93 |
95.67 |
103.28 |
|
96 |
215.7 |
137.52 |
138.66 |
139.78 |
157.88 |
Last updated: 29 October 2002
