ScienceMark Membench | |||
| 处理器 | 双路E5430 | 双路E5430 | 双路E5430 |
| 内存技术参数 | 2GB FBD ECC DDR2-667 SDRAM x1 | 2GB FBD ECC DDR2-667 SDRAM x2 | 2GB FBD ECC DDR2-667 SDRAM x4 |
| L1带宽(MB/s) | 74610.85 | 73006.88 | 74612.09 |
| L2带宽(MB/s) | 22332.97 | 22336.02 | 22328.73 |
| 内存带宽(MB/s) | 2691.79 | 3757.80 | 4479.89 |
| L1 Cache Latency(ns) | |||
| 32 Bytes Stride | 1.13 | 1.13 | 1.13 |
| L2 Cache Latency(ns) | |||
| 4 Bytes Stride | 1.13 | 1.13 | 1.13 |
| 16 Bytes Stride | 1.50 | 1.50 | 1.50 |
| 64 Bytes Stride | 4.51 | 4.51 | 4.51 |
| 256 Bytes Stride | 4.51 | 4.51 | 4.51 |
| 512 Bytes Stride | 4.89 | 4.89 | 4.89 |
| Memory Latency(ns) | |||
| 4 Bytes Stride | 1.13 | 1.13 | 1.13 |
| 16 Bytes Stride | 5.64 | 4.89 | 4.89 |
| 64 Bytes Stride | 22.56 | 19.55 | 19.17 |
| 256 Bytes Stride | 64.66 | 61.28 | 59.77 |
| 512 Bytes Stride | 85.71 | 81.20 | 68.04 |
| Memory Algorithm Bandwidth(MB/s) | |||
| Compiler | 2320.00 | 2882.35 | 3193.00 |
| REP MOVSD | 2324.80 | 2908.28 | 3217.40 |
| ALU Reg Copy | 1897.52 | 2379.98 | 2709.99 |
| MMX Reg Copy | 1896.39 | 2435.80 | 2972.15 |
| MMX Reg 3dNow | --- | --- | --- |
| MMX Reg SSE | 2688.02 | 3735.71 | 4012.77 |
| SSE PAlign | 2687.01 | 3755.37 | 4323.58 |
| SSE PAlign SSE | 2690.93 | 3757.80 | 4440.32 |
| SSE2 PAlign | 2688.09 | 3757.38 | 4323.10 |
| SSE2 PAlign SSE | 2691.79 | 3751.54 | 4436.87 |
| MMX Block 4kb | 2583.20 | 3252.40 | 4061.82 |
| MMX Block 16kb | 2310.93 | 2994.33 | 4475.66 |
| SSE Block 4kb | 2599.01 | 3313.57 | 4073.28 |
| SSE Block 16kb | 2313.20 | 2995.12 | 4479.89 |
首先我们考察的是单处理器情况下内存容量不同对于测试结果的影响。我们将服务器内存容量配置为2GB、4GB、8GB三种规格，得到了不同的测试数据。
从测试结果的表现来看，随着内存容量的增加，内存带宽和各项指令集的测试成绩也会随之增加。难道内存容量决定了测试性能的高低？不过随后的测试却出现了另外的一种情况。
