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Old 07-13-2004, 04:17 AM   #1
Linfish
LQ Newbie
 
Registered: Jun 2004
Posts: 5

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Who know about the lmbench? I can not understand the test result.


What's the follow result mean? I cannot understand it.

Socket bandwidth using localhost

0.000001 0.86 MB/sec

0.000064 41.94 MB/sec

0.000128 79.71 MB/sec

0.000256 122.59 MB/sec

0.000512 177.55 MB/sec

0.001024 176.68 MB/sec

0.001437 143.28 MB/sec

10.485760 23.41 MB/sec



Avg xfer: 3.2KB, 41.8KB in 5.0760 millisecs, 8.23 MB/sec

AF_UNIX sock stream bandwidth: 175.12 MB/sec

Pipe bandwidth: 526.77 MB/sec





Memory bzero bandwidth

0.000512 4183.43

0.001024 5715.56

0.002048 6971.88

0.004096 7858.49

0.008192 8344.22

0.016384 3929.61

0.032768 4766.93

0.065536 2547.12

0.131072 1115.70

0.262144 605.30

0.524288 519.27

1.05 503.64

2.10 502.55



"unrolled bcopy unaligned

0.000512 4086.43

0.001024 3995.07

0.002048 4013.99

0.004096 3955.77

0.008192 561.83

0.016384 3006.65

0.032768 1302.70

0.065536 1004.72

0.131072 442.56

0.262144 420.40

0.524288 420.44

1.05 413.15



"unrolled partial bcopy unaligned

0.000512 8958.64

0.001024 8979.62

0.002048 8934.25

0.004096 8561.18

0.008192 5842.39

0.016384 5797.42

0.032768 5749.48

0.065536 1071.79

0.131072 438.83

0.262144 418.91

0.524288 412.63

1.05 423.67



Memory read bandwidth

0.000512 7706.03

0.001024 7787.34

0.002048 7831.25

0.004096 7825.15

0.008192 7542.42

0.016384 5427.16

0.032768 5458.37

0.065536 2904.77

0.131072 2170.14

0.262144 1658.83

0.524288 1601.31

1.05 1597.63

2.10 1599.41



Memory partial read bandwidth

0.000512 29530.08

0.001024 30410.12

0.002048 30884.83

0.004096 31016.42

0.008192 29249.02

0.016384 13297.57

0.032768 13824.50

0.065536 13252.99

0.131072 3044.37

0.262144 2051.28

0.524288 1889.49

1.05 1899.94

2.10 1903.73



Memory write bandwidth

0.000512 4091.33

0.001024 4106.66

0.002048 4172.06

0.004096 4139.92

0.008192 4183.53

0.016384 4131.92

0.032768 4121.54

0.065536 4081.04

0.131072 1608.25

0.262144 627.35

0.524288 617.85

1.05 610.44

2.10 609.99



Memory partial write bandwidth

0.000512 8949.63

0.001024 8987.65

0.002048 8980.99

0.004096 8950.82

0.008192 8930.71

0.016384 8913.47

0.032768 8884.09

0.065536 8797.25

0.131072 1873.16

0.262144 615.67

0.524288 613.82

1.05 615.36

2.10 616.54



Memory partial read/write bandwidth

0.000512 8985.73

0.001024 8982.83

0.002048 8978.63

0.004096 8957.21

0.008192 8625.28

0.016384 4793.60

0.032768 4765.30

0.065536 2170.53

0.131072 1899.93

0.262144 629.29

0.524288 609.54

1.05 612.75

2.10 611.95



Usage: tlb [-c] [-L <line size>] [-M len[K|M]] [-W <warmup>] [-N <repetitions>]



Memory load parallelism

Usage: par_mem [-c] [-L <line size>] [-M len[K|M]] [-W <warmup>] [-N <repetitions>]



STREAM copy latency: inf nanoseconds

STREAM copy bandwidth: 0.00 MB/sec

STREAM scale latency: inf nanoseconds

STREAM scale bandwidth: 0.00 MB/sec

STREAM sum latency: inf nanoseconds

STREAM sum bandwidth: 0.00 MB/sec

STREAM triad latency: inf nanoseconds

STREAM triad bandwidth: 0.00 MB/sec

STREAM2 fill latency: inf nanoseconds

STREAM2 fill bandwidth: 0.00 MB/sec

STREAM2 copy latency: inf nanoseconds

STREAM2 copy bandwidth: 0.00 MB/sec

STREAM2 daxpy latency: inf nanoseconds

STREAM2 daxpy bandwidth: 0.00 MB/sec

STREAM2 sum latency: inf nanoseconds

STREAM2 sum bandwidth: 0.00 MB/sec



Memory load latency

"stride=128

Last edited by Linfish; 07-13-2004 at 04:18 AM.
 
  


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