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AM625: lmbench data interpretation

Tony Tang
Mastermind 30847 points

Part Number: AM625

Measure Memory Benchmark according to User gudie with below command:

root@am62xx-evm:/opt/ltp# ./runltp -P am62xx_sk-fs -f ddt/lmbench -s LMBENCH_L_PERF_0001

There are many output, below partial looks like memory benchmark., but it is not same as data in user guide table. ,

There are min, max data, I assume the first one is average data. but in the output of my test, there isn't such information. does it need more command arguments to enable more statical data?

image.png

TRACE LOG| ***** STARTING LMBENCH SCRIPT ***** |
|TRACE LOG| CREATING THE FILE OF 16MB SIZE FOR BENCHMARKING|
16+0 records in
16+0 records out
16777216 bytes (17 MB, 16 MiB) copied, 0.219839 s, 76.3 MB/s
|TRACE LOG| ***** STARTING BANDWIDTH BENCHMARKS ***** |
|TRACE LOG| MEMORY BANDWIDTH BENCHMARKS |
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rd|
|TRACE LOG| Memory Blk Size - 1M|
1.00 1570.68
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rd|
|TRACE LOG| Memory Blk Size - 2M|
2.00 1352.49
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rd|
|TRACE LOG| Memory Blk Size - 4M|
4.00 1371.27
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rd|
|TRACE LOG| Memory Blk Size - 8M|
8.00 1363.79
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rd|
|TRACE LOG| Memory Blk Size - 16M|
16.00 1341.49
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - wr|
|TRACE LOG| Memory Blk Size - 1M|
1.00 866.70
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - wr|
|TRACE LOG| Memory Blk Size - 2M|
2.00 781.15
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - wr|
|TRACE LOG| Memory Blk Size - 4M|
4.00 748.08
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - wr|
|TRACE LOG| Memory Blk Size - 8M|
8.00 807.27
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - wr|
|TRACE LOG| Memory Blk Size - 16M|
16.00 810.95
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rdwr|
|TRACE LOG| Memory Blk Size - 1M|
1.00 850.34
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rdwr|
|TRACE LOG| Memory Blk Size - 2M|
2.00 781.86
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rdwr|
|TRACE LOG| Memory Blk Size - 4M|
4.00 759.16
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rdwr|
|TRACE LOG| Memory Blk Size - 8M|
8.00 794.99
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - rdwr|
|TRACE LOG| Memory Blk Size - 16M|
16.00 799.52
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - cp|
|TRACE LOG| Memory Blk Size - 1M|
1.00 609.57
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - cp|
|TRACE LOG| Memory Blk Size - 2M|
2.00 559.99
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - cp|
|TRACE LOG| Memory Blk Size - 4M|
4.00 543.85
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - cp|
|TRACE LOG| Memory Blk Size - 8M|
8.00 542.63
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - cp|
|TRACE LOG| Memory Blk Size - 16M|
16.00 547.35
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fwr|
|TRACE LOG| Memory Blk Size - 1M|
1.00 2654.03
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fwr|
|TRACE LOG| Memory Blk Size - 2M|
2.00 2265.43
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fwr|
|TRACE LOG| Memory Blk Size - 4M|
4.00 2240.48
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fwr|
|TRACE LOG| Memory Blk Size - 8M|
8.00 2201.73
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fwr|
|TRACE LOG| Memory Blk Size - 16M|
16.00 2149.09
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - frd|
|TRACE LOG| Memory Blk Size - 1M|
1.00 1504.61
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - frd|
|TRACE LOG| Memory Blk Size - 2M|
2.00 1332.45
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - frd|
|TRACE LOG| Memory Blk Size - 4M|
4.00 1363.56
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - frd|
|TRACE LOG| Memory Blk Size - 8M|
8.00 1315.14
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - frd|
|TRACE LOG| Memory Blk Size - 16M|
16.00 1330.23
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fcp|
|TRACE LOG| Memory Blk Size - 1M|
1.00 1123.81
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fcp|
|TRACE LOG| Memory Blk Size - 2M|
2.00 1054.48
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fcp|
|TRACE LOG| Memory Blk Size - 4M|
4.00 1058.20
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fcp|
|TRACE LOG| Memory Blk Size - 8M|
8.00 1101.02
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - fcp|
|TRACE LOG| Memory Blk Size - 16M|
16.00 1044.32
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bzero|
|TRACE LOG| Memory Blk Size - 1M|
1.00 2120.89
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bzero|
|TRACE LOG| Memory Blk Size - 2M|
2.00 2116.78
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bzero|
|TRACE LOG| Memory Blk Size - 4M|
4.00 2118.64
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bzero|
|TRACE LOG| Memory Blk Size - 8M|
8.00 2121.17
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bzero|
|TRACE LOG| Memory Blk Size - 16M|
16.00 2121.17
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bcopy|
|TRACE LOG| Memory Blk Size - 1M|
1.00 1033.41
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bcopy|
|TRACE LOG| Memory Blk Size - 2M|
2.00 927.64
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bcopy|
|TRACE LOG| Memory Blk Size - 4M|
4.00 907.65
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bcopy|
|TRACE LOG| Memory Blk Size - 8M|
8.00 896.06
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TEST START|bw_mem|
|TRACE LOG| Parameters      : |
|TRACE LOG| Operation       - bcopy|
|TRACE LOG| Memory Blk Size - 16M|
16.00 912.20
|TEST RESULT|PASS|bw_mem|
|TEST END|bw_mem|
|TRACE LOG| BANDWIDTH OF PIPE COMMUNICATION BETWEEN PARENT AND CHILD |
|TEST START|bw_unix|
|TRACE LOG| Parameters      : none|
AF_UNIX sock stream bandwidth: 768.78 MB/sec
|TEST RESULT|PASS|bw_unix|
|TEST END|bw_unix|
|TRACE LOG| BANDWIDTH OF FILE READ|
|TEST START|bw_file_rd|
|TRACE LOG| Parameters      : |
|TRACE LOG| Size            - 1MB|
|TRACE LOG| operation       - open2close|
|TRACE LOG| File            - test1.txt|
1.00 945.72
|TEST RESULT|PASS|bw_file_rd|
|TEST END|bw_file_rd|
|TEST START|bw_file_rd|
|TRACE LOG| Parameters      : |
|TRACE LOG| Size            - 1MB|
|TRACE LOG| operation       - io_only|
|TRACE LOG| File            - test1.txt|
1.00 1015.92
|TEST RESULT|PASS|bw_file_rd|
|TEST END|bw_file_rd|
|TRACE LOG| BANDWIDTH OF CREATING A MEMORY MAPPING TO A FILE AND READING|
|TEST START|bw_mmap_rd|
|TRACE LOG| Parameters      : |
|TRACE LOG| Size            - 1MB|
|TRACE LOG| operation       - open2close|
|TRACE LOG| File            - test1.txt|
1.00 843.45
|TEST RESULT|PASS|bw_mmap_rd|
|TEST END|bw_mmap_rd|
|TEST START|bw_mmap_rd|
|TRACE LOG| Parameters      : |
|TRACE LOG| Size            - 1MB|
|TRACE LOG| operation       - mmap_only|
|TRACE LOG| File            - test1.txt|
1.00 1557.09
|TEST RESULT|PASS|bw_mmap_rd|
|TEST END|bw_mmap_rd|