I had 2GB x4 memory in my desktop, however recently one of them failed to pass memtest. Left three 2GB memory can be used temporarily, so I am wondering what exactly DUAL channel memory make sense.
Below are number I tested with mbw .
About mbw
mbw(1) General Commands Manual mbw(1)
NAME
mbw - Memory BandWidth benchmark
SYNOPSIS
mbw [options] arraysize_in_MiB
DESCRIPTION
mbw determines available memory bandwidth by copying large arrays of data in memory.
The combinations
2GB+2GB DUAL CHANNEL
hmc@hmc-P55A-UD3:~$ mbw 1024
Long uses 8 bytes. Allocating 2*134217728 elements = 2147483648 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.25170 MiB: 1024.00000 Copy: 4068.416 MiB/s
1 Method: MEMCPY Elapsed: 0.26332 MiB: 1024.00000 Copy: 3888.804 MiB/s
2 Method: MEMCPY Elapsed: 0.26424 MiB: 1024.00000 Copy: 3875.294 MiB/s
3 Method: MEMCPY Elapsed: 0.28211 MiB: 1024.00000 Copy: 3629.841 MiB/s
4 Method: MEMCPY Elapsed: 0.27033 MiB: 1024.00000 Copy: 3787.907 MiB/s
5 Method: MEMCPY Elapsed: 0.26815 MiB: 1024.00000 Copy: 3818.801 MiB/s
6 Method: MEMCPY Elapsed: 0.27420 MiB: 1024.00000 Copy: 3734.446 MiB/s
7 Method: MEMCPY Elapsed: 0.26919 MiB: 1024.00000 Copy: 3803.990 MiB/s
8 Method: MEMCPY Elapsed: 0.27002 MiB: 1024.00000 Copy: 3792.326 MiB/s
9 Method: MEMCPY Elapsed: 0.27435 MiB: 1024.00000 Copy: 3732.472 MiB/s
AVG Method: MEMCPY Elapsed: 0.26876 MiB: 1024.00000 Copy: 3810.087 MiB/s
0 Method: DUMB Elapsed: 0.16932 MiB: 1024.00000 Copy: 6047.863 MiB/s
1 Method: DUMB Elapsed: 0.16700 MiB: 1024.00000 Copy: 6131.626 MiB/s
2 Method: DUMB Elapsed: 0.16870 MiB: 1024.00000 Copy: 6070.019 MiB/s
3 Method: DUMB Elapsed: 0.16806 MiB: 1024.00000 Copy: 6093.135 MiB/s
4 Method: DUMB Elapsed: 0.16730 MiB: 1024.00000 Copy: 6120.851 MiB/s
5 Method: DUMB Elapsed: 0.16778 MiB: 1024.00000 Copy: 6103.230 MiB/s
6 Method: DUMB Elapsed: 0.16818 MiB: 1024.00000 Copy: 6088.606 MiB/s
7 Method: DUMB Elapsed: 0.16698 MiB: 1024.00000 Copy: 6132.398 MiB/s
8 Method: DUMB Elapsed: 0.16601 MiB: 1024.00000 Copy: 6168.266 MiB/s
9 Method: DUMB Elapsed: 0.16980 MiB: 1024.00000 Copy: 6030.731 MiB/s
AVG Method: DUMB Elapsed: 0.16791 MiB: 1024.00000 Copy: 6098.414 MiB/s
0 Method: MCBLOCK Elapsed: 0.21192 MiB: 1024.00000 Copy: 4831.944 MiB/s
1 Method: MCBLOCK Elapsed: 0.17160 MiB: 1024.00000 Copy: 5967.227 MiB/s
2 Method: MCBLOCK Elapsed: 0.17416 MiB: 1024.00000 Copy: 5879.617 MiB/s
3 Method: MCBLOCK Elapsed: 0.17381 MiB: 1024.00000 Copy: 5891.559 MiB/s
4 Method: MCBLOCK Elapsed: 0.17415 MiB: 1024.00000 Copy: 5880.124 MiB/s
5 Method: MCBLOCK Elapsed: 0.17529 MiB: 1024.00000 Copy: 5841.781 MiB/s
6 Method: MCBLOCK Elapsed: 0.17485 MiB: 1024.00000 Copy: 5856.515 MiB/s
7 Method: MCBLOCK Elapsed: 0.17552 MiB: 1024.00000 Copy: 5833.960 MiB/s
8 Method: MCBLOCK Elapsed: 0.17847 MiB: 1024.00000 Copy: 5737.627 MiB/s
9 Method: MCBLOCK Elapsed: 0.17409 MiB: 1024.00000 Copy: 5881.846 MiB/s
AVG Method: MCBLOCK Elapsed: 0.17839 MiB: 1024.00000 Copy: 5740.332 MiB/s
hmc@hmc-P55A-UD3:~$ mbw 512
Long uses 8 bytes. Allocating 2*67108864 elements = 1073741824 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.12873 MiB: 512.00000 Copy: 3977.348 MiB/s
1 Method: MEMCPY Elapsed: 0.12578 MiB: 512.00000 Copy: 4070.729 MiB/s
2 Method: MEMCPY Elapsed: 0.12749 MiB: 512.00000 Copy: 4015.938 MiB/s
3 Method: MEMCPY Elapsed: 0.12885 MiB: 512.00000 Copy: 3973.644 MiB/s
4 Method: MEMCPY Elapsed: 0.12719 MiB: 512.00000 Copy: 4025.505 MiB/s
5 Method: MEMCPY Elapsed: 0.12878 MiB: 512.00000 Copy: 3975.680 MiB/s
6 Method: MEMCPY Elapsed: 0.12947 MiB: 512.00000 Copy: 3954.554 MiB/s
7 Method: MEMCPY Elapsed: 0.12625 MiB: 512.00000 Copy: 4055.317 MiB/s
8 Method: MEMCPY Elapsed: 0.12857 MiB: 512.00000 Copy: 3982.174 MiB/s
9 Method: MEMCPY Elapsed: 0.12934 MiB: 512.00000 Copy: 3958.589 MiB/s
AVG Method: MEMCPY Elapsed: 0.12805 MiB: 512.00000 Copy: 3998.579 MiB/s
0 Method: DUMB Elapsed: 0.08313 MiB: 512.00000 Copy: 6159.102 MiB/s
1 Method: DUMB Elapsed: 0.08282 MiB: 512.00000 Copy: 6182.380 MiB/s
2 Method: DUMB Elapsed: 0.08241 MiB: 512.00000 Copy: 6212.612 MiB/s
3 Method: DUMB Elapsed: 0.08278 MiB: 512.00000 Copy: 6184.994 MiB/s
4 Method: DUMB Elapsed: 0.08298 MiB: 512.00000 Copy: 6170.236 MiB/s
5 Method: DUMB Elapsed: 0.08273 MiB: 512.00000 Copy: 6188.583 MiB/s
6 Method: DUMB Elapsed: 0.08374 MiB: 512.00000 Copy: 6114.163 MiB/s
7 Method: DUMB Elapsed: 0.08243 MiB: 512.00000 Copy: 6211.482 MiB/s
8 Method: DUMB Elapsed: 0.08273 MiB: 512.00000 Copy: 6189.181 MiB/s
9 Method: DUMB Elapsed: 0.08272 MiB: 512.00000 Copy: 6189.331 MiB/s
AVG Method: DUMB Elapsed: 0.08285 MiB: 512.00000 Copy: 6180.089 MiB/s
0 Method: MCBLOCK Elapsed: 0.08727 MiB: 512.00000 Copy: 5866.917 MiB/s
1 Method: MCBLOCK Elapsed: 0.08827 MiB: 512.00000 Copy: 5800.385 MiB/s
2 Method: MCBLOCK Elapsed: 0.08897 MiB: 512.00000 Copy: 5754.749 MiB/s
3 Method: MCBLOCK Elapsed: 0.08819 MiB: 512.00000 Copy: 5805.713 MiB/s
4 Method: MCBLOCK Elapsed: 0.08797 MiB: 512.00000 Copy: 5819.901 MiB/s
5 Method: MCBLOCK Elapsed: 0.08767 MiB: 512.00000 Copy: 5839.816 MiB/s
6 Method: MCBLOCK Elapsed: 0.08864 MiB: 512.00000 Copy: 5775.978 MiB/s
7 Method: MCBLOCK Elapsed: 0.08828 MiB: 512.00000 Copy: 5799.728 MiB/s
8 Method: MCBLOCK Elapsed: 0.08821 MiB: 512.00000 Copy: 5804.199 MiB/s
9 Method: MCBLOCK Elapsed: 0.08842 MiB: 512.00000 Copy: 5790.480 MiB/s
AVG Method: MCBLOCK Elapsed: 0.08819 MiB: 512.00000 Copy: 5805.634 MiB/s
hmc@hmc-P55A-UD3:~$ mbw 256
Long uses 8 bytes. Allocating 2*33554432 elements = 536870912 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.06817 MiB: 256.00000 Copy: 3755.373 MiB/s
1 Method: MEMCPY Elapsed: 0.06396 MiB: 256.00000 Copy: 4002.314 MiB/s
2 Method: MEMCPY Elapsed: 0.06331 MiB: 256.00000 Copy: 4043.276 MiB/s
3 Method: MEMCPY Elapsed: 0.06520 MiB: 256.00000 Copy: 3926.140 MiB/s
4 Method: MEMCPY Elapsed: 0.06455 MiB: 256.00000 Copy: 3966.102 MiB/s
5 Method: MEMCPY Elapsed: 0.06359 MiB: 256.00000 Copy: 4025.790 MiB/s
6 Method: MEMCPY Elapsed: 0.06506 MiB: 256.00000 Copy: 3935.071 MiB/s
7 Method: MEMCPY Elapsed: 0.06506 MiB: 256.00000 Copy: 3934.648 MiB/s
8 Method: MEMCPY Elapsed: 0.06614 MiB: 256.00000 Copy: 3870.343 MiB/s
9 Method: MEMCPY Elapsed: 0.06316 MiB: 256.00000 Copy: 4053.327 MiB/s
AVG Method: MEMCPY Elapsed: 0.06482 MiB: 256.00000 Copy: 3949.343 MiB/s
0 Method: DUMB Elapsed: 0.04194 MiB: 256.00000 Copy: 6104.540 MiB/s
1 Method: DUMB Elapsed: 0.04206 MiB: 256.00000 Copy: 6085.964 MiB/s
2 Method: DUMB Elapsed: 0.04207 MiB: 256.00000 Copy: 6084.807 MiB/s
3 Method: DUMB Elapsed: 0.04221 MiB: 256.00000 Copy: 6064.914 MiB/s
4 Method: DUMB Elapsed: 0.04204 MiB: 256.00000 Copy: 6090.018 MiB/s
5 Method: DUMB Elapsed: 0.04180 MiB: 256.00000 Copy: 6124.841 MiB/s
6 Method: DUMB Elapsed: 0.04184 MiB: 256.00000 Copy: 6117.962 MiB/s
7 Method: DUMB Elapsed: 0.04221 MiB: 256.00000 Copy: 6065.057 MiB/s
8 Method: DUMB Elapsed: 0.04243 MiB: 256.00000 Copy: 6033.609 MiB/s
9 Method: DUMB Elapsed: 0.04193 MiB: 256.00000 Copy: 6105.268 MiB/s
AVG Method: DUMB Elapsed: 0.04205 MiB: 256.00000 Copy: 6087.585 MiB/s
0 Method: MCBLOCK Elapsed: 0.04232 MiB: 256.00000 Copy: 6049.149 MiB/s
1 Method: MCBLOCK Elapsed: 0.04271 MiB: 256.00000 Copy: 5993.351 MiB/s
2 Method: MCBLOCK Elapsed: 0.04250 MiB: 256.00000 Copy: 6023.813 MiB/s
3 Method: MCBLOCK Elapsed: 0.04296 MiB: 256.00000 Copy: 5959.170 MiB/s
4 Method: MCBLOCK Elapsed: 0.04243 MiB: 256.00000 Copy: 6032.898 MiB/s
5 Method: MCBLOCK Elapsed: 0.04251 MiB: 256.00000 Copy: 6021.546 MiB/s
6 Method: MCBLOCK Elapsed: 0.04216 MiB: 256.00000 Copy: 6071.818 MiB/s
7 Method: MCBLOCK Elapsed: 0.04288 MiB: 256.00000 Copy: 5970.288 MiB/s
8 Method: MCBLOCK Elapsed: 0.04289 MiB: 256.00000 Copy: 5968.757 MiB/s
9 Method: MCBLOCK Elapsed: 0.04272 MiB: 256.00000 Copy: 5992.790 MiB/s
AVG Method: MCBLOCK Elapsed: 0.04261 MiB: 256.00000 Copy: 6008.149 MiB/s
2GB +2GB non dual channel
hmc@hmc-P55A-UD3:~$ mbw 1024
Long uses 8 bytes. Allocating 2*134217728 elements = 2147483648 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.42441 MiB: 1024.00000 Copy: 2412.750 MiB/s
1 Method: MEMCPY Elapsed: 0.42094 MiB: 1024.00000 Copy: 2432.674 MiB/s
2 Method: MEMCPY Elapsed: 0.41692 MiB: 1024.00000 Copy: 2456.095 MiB/s
3 Method: MEMCPY Elapsed: 0.41926 MiB: 1024.00000 Copy: 2442.410 MiB/s
4 Method: MEMCPY Elapsed: 0.41979 MiB: 1024.00000 Copy: 2439.315 MiB/s
5 Method: MEMCPY Elapsed: 0.41942 MiB: 1024.00000 Copy: 2441.490 MiB/s
6 Method: MEMCPY Elapsed: 0.42052 MiB: 1024.00000 Copy: 2435.051 MiB/s
7 Method: MEMCPY Elapsed: 0.42470 MiB: 1024.00000 Copy: 2411.085 MiB/s
8 Method: MEMCPY Elapsed: 0.42207 MiB: 1024.00000 Copy: 2426.167 MiB/s
9 Method: MEMCPY Elapsed: 0.42684 MiB: 1024.00000 Copy: 2398.997 MiB/s
AVG Method: MEMCPY Elapsed: 0.42149 MiB: 1024.00000 Copy: 2429.491 MiB/s
0 Method: DUMB Elapsed: 0.25677 MiB: 1024.00000 Copy: 3987.958 MiB/s
1 Method: DUMB Elapsed: 0.25691 MiB: 1024.00000 Copy: 3985.847 MiB/s
2 Method: DUMB Elapsed: 0.25899 MiB: 1024.00000 Copy: 3953.760 MiB/s
3 Method: DUMB Elapsed: 0.25449 MiB: 1024.00000 Copy: 4023.734 MiB/s
4 Method: DUMB Elapsed: 0.25552 MiB: 1024.00000 Copy: 4007.483 MiB/s
5 Method: DUMB Elapsed: 0.25518 MiB: 1024.00000 Copy: 4012.822 MiB/s
6 Method: DUMB Elapsed: 0.25545 MiB: 1024.00000 Copy: 4008.659 MiB/s
7 Method: DUMB Elapsed: 0.25473 MiB: 1024.00000 Copy: 4019.911 MiB/s
8 Method: DUMB Elapsed: 0.25240 MiB: 1024.00000 Copy: 4057.052 MiB/s
9 Method: DUMB Elapsed: 0.24977 MiB: 1024.00000 Copy: 4099.837 MiB/s
AVG Method: DUMB Elapsed: 0.25502 MiB: 1024.00000 Copy: 4015.348 MiB/s
0 Method: MCBLOCK Elapsed: 0.28630 MiB: 1024.00000 Copy: 3576.730 MiB/s
1 Method: MCBLOCK Elapsed: 0.28747 MiB: 1024.00000 Copy: 3562.061 MiB/s
2 Method: MCBLOCK Elapsed: 0.29100 MiB: 1024.00000 Copy: 3518.961 MiB/s
3 Method: MCBLOCK Elapsed: 0.29045 MiB: 1024.00000 Copy: 3525.576 MiB/s
4 Method: MCBLOCK Elapsed: 0.28885 MiB: 1024.00000 Copy: 3545.080 MiB/s
5 Method: MCBLOCK Elapsed: 0.29142 MiB: 1024.00000 Copy: 3513.877 MiB/s
6 Method: MCBLOCK Elapsed: 0.28991 MiB: 1024.00000 Copy: 3532.192 MiB/s
7 Method: MCBLOCK Elapsed: 0.28529 MiB: 1024.00000 Copy: 3589.330 MiB/s
8 Method: MCBLOCK Elapsed: 0.28598 MiB: 1024.00000 Copy: 3580.607 MiB/s
9 Method: MCBLOCK Elapsed: 0.28637 MiB: 1024.00000 Copy: 3575.794 MiB/s
AVG Method: MCBLOCK Elapsed: 0.28830 MiB: 1024.00000 Copy: 3551.819 MiB/s
hmc@hmc-P55A-UD3:~$ mbw 512
Long uses 8 bytes. Allocating 2*67108864 elements = 1073741824 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.19148 MiB: 512.00000 Copy: 2673.853 MiB/s
1 Method: MEMCPY Elapsed: 0.18887 MiB: 512.00000 Copy: 2710.917 MiB/s
2 Method: MEMCPY Elapsed: 0.18966 MiB: 512.00000 Copy: 2699.511 MiB/s
3 Method: MEMCPY Elapsed: 0.18839 MiB: 512.00000 Copy: 2717.723 MiB/s
4 Method: MEMCPY Elapsed: 0.18804 MiB: 512.00000 Copy: 2722.839 MiB/s
5 Method: MEMCPY Elapsed: 0.18984 MiB: 512.00000 Copy: 2696.951 MiB/s
6 Method: MEMCPY Elapsed: 0.18917 MiB: 512.00000 Copy: 2706.575 MiB/s
7 Method: MEMCPY Elapsed: 0.18858 MiB: 512.00000 Copy: 2714.985 MiB/s
8 Method: MEMCPY Elapsed: 0.18881 MiB: 512.00000 Copy: 2711.735 MiB/s
9 Method: MEMCPY Elapsed: 0.18876 MiB: 512.00000 Copy: 2712.482 MiB/s
AVG Method: MEMCPY Elapsed: 0.18916 MiB: 512.00000 Copy: 2706.692 MiB/s
0 Method: DUMB Elapsed: 0.11565 MiB: 512.00000 Copy: 4427.227 MiB/s
1 Method: DUMB Elapsed: 0.11709 MiB: 512.00000 Copy: 4372.630 MiB/s
2 Method: DUMB Elapsed: 0.11617 MiB: 512.00000 Copy: 4407.372 MiB/s
3 Method: DUMB Elapsed: 0.11625 MiB: 512.00000 Copy: 4404.263 MiB/s
4 Method: DUMB Elapsed: 0.11619 MiB: 512.00000 Copy: 4406.651 MiB/s
5 Method: DUMB Elapsed: 0.11740 MiB: 512.00000 Copy: 4361.047 MiB/s
6 Method: DUMB Elapsed: 0.11601 MiB: 512.00000 Copy: 4413.451 MiB/s
7 Method: DUMB Elapsed: 0.11605 MiB: 512.00000 Copy: 4411.777 MiB/s
8 Method: DUMB Elapsed: 0.11601 MiB: 512.00000 Copy: 4413.299 MiB/s
9 Method: DUMB Elapsed: 0.11729 MiB: 512.00000 Copy: 4365.435 MiB/s
AVG Method: DUMB Elapsed: 0.11641 MiB: 512.00000 Copy: 4398.206 MiB/s
0 Method: MCBLOCK Elapsed: 0.12970 MiB: 512.00000 Copy: 3947.663 MiB/s
1 Method: MCBLOCK Elapsed: 0.13012 MiB: 512.00000 Copy: 3934.860 MiB/s
2 Method: MCBLOCK Elapsed: 0.13027 MiB: 512.00000 Copy: 3930.419 MiB/s
3 Method: MCBLOCK Elapsed: 0.13131 MiB: 512.00000 Copy: 3899.140 MiB/s
4 Method: MCBLOCK Elapsed: 0.12970 MiB: 512.00000 Copy: 3947.480 MiB/s
5 Method: MCBLOCK Elapsed: 0.12947 MiB: 512.00000 Copy: 3954.645 MiB/s
6 Method: MCBLOCK Elapsed: 0.13021 MiB: 512.00000 Copy: 3931.959 MiB/s
7 Method: MCBLOCK Elapsed: 0.13152 MiB: 512.00000 Copy: 3892.944 MiB/s
8 Method: MCBLOCK Elapsed: 0.13052 MiB: 512.00000 Copy: 3922.710 MiB/s
9 Method: MCBLOCK Elapsed: 0.13055 MiB: 512.00000 Copy: 3921.869 MiB/s
AVG Method: MCBLOCK Elapsed: 0.13034 MiB: 512.00000 Copy: 3928.275 MiB/s
hmc@hmc-P55A-UD3:~$ mbw 256
Long uses 8 bytes. Allocating 2*33554432 elements = 536870912 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.09508 MiB: 256.00000 Copy: 2692.611 MiB/s
1 Method: MEMCPY Elapsed: 0.09609 MiB: 256.00000 Copy: 2664.086 MiB/s
2 Method: MEMCPY Elapsed: 0.09655 MiB: 256.00000 Copy: 2651.448 MiB/s
3 Method: MEMCPY Elapsed: 0.09687 MiB: 256.00000 Copy: 2642.635 MiB/s
4 Method: MEMCPY Elapsed: 0.09707 MiB: 256.00000 Copy: 2637.163 MiB/s
5 Method: MEMCPY Elapsed: 0.11169 MiB: 256.00000 Copy: 2292.099 MiB/s
6 Method: MEMCPY Elapsed: 0.11025 MiB: 256.00000 Copy: 2322.038 MiB/s
7 Method: MEMCPY Elapsed: 0.11284 MiB: 256.00000 Copy: 2268.619 MiB/s
8 Method: MEMCPY Elapsed: 0.10727 MiB: 256.00000 Copy: 2386.568 MiB/s
9 Method: MEMCPY Elapsed: 0.10817 MiB: 256.00000 Copy: 2366.667 MiB/s
AVG Method: MEMCPY Elapsed: 0.10319 MiB: 256.00000 Copy: 2480.904 MiB/s
0 Method: DUMB Elapsed: 0.06330 MiB: 256.00000 Copy: 4044.298 MiB/s
1 Method: DUMB Elapsed: 0.06149 MiB: 256.00000 Copy: 4163.482 MiB/s
2 Method: DUMB Elapsed: 0.06126 MiB: 256.00000 Copy: 4178.978 MiB/s
3 Method: DUMB Elapsed: 0.06130 MiB: 256.00000 Copy: 4176.046 MiB/s
4 Method: DUMB Elapsed: 0.06057 MiB: 256.00000 Copy: 4226.515 MiB/s
5 Method: DUMB Elapsed: 0.05994 MiB: 256.00000 Copy: 4271.009 MiB/s
6 Method: DUMB Elapsed: 0.06348 MiB: 256.00000 Copy: 4032.703 MiB/s
7 Method: DUMB Elapsed: 0.06033 MiB: 256.00000 Copy: 4243.117 MiB/s
8 Method: DUMB Elapsed: 0.06389 MiB: 256.00000 Copy: 4006.761 MiB/s
9 Method: DUMB Elapsed: 0.06376 MiB: 256.00000 Copy: 4015.371 MiB/s
AVG Method: DUMB Elapsed: 0.06193 MiB: 256.00000 Copy: 4133.586 MiB/s
0 Method: MCBLOCK Elapsed: 0.07098 MiB: 256.00000 Copy: 3606.701 MiB/s
1 Method: MCBLOCK Elapsed: 0.07154 MiB: 256.00000 Copy: 3578.468 MiB/s
2 Method: MCBLOCK Elapsed: 0.07568 MiB: 256.00000 Copy: 3382.709 MiB/s
3 Method: MCBLOCK Elapsed: 0.07848 MiB: 256.00000 Copy: 3261.894 MiB/s
4 Method: MCBLOCK Elapsed: 0.07390 MiB: 256.00000 Copy: 3463.906 MiB/s
5 Method: MCBLOCK Elapsed: 0.07406 MiB: 256.00000 Copy: 3456.657 MiB/s
6 Method: MCBLOCK Elapsed: 0.07167 MiB: 256.00000 Copy: 3572.176 MiB/s
7 Method: MCBLOCK Elapsed: 0.07113 MiB: 256.00000 Copy: 3599.095 MiB/s
8 Method: MCBLOCK Elapsed: 0.07047 MiB: 256.00000 Copy: 3632.545 MiB/s
9 Method: MCBLOCK Elapsed: 0.07082 MiB: 256.00000 Copy: 3614.747 MiB/s
AVG Method: MCBLOCK Elapsed: 0.07287 MiB: 256.00000 Copy: 3512.946 MiB/s
6GB = 2GB +2GB (dual channel) + 2GB (STANDALONE)
hmc@hmc-P55A-UD3:~$ mbw 1024
Long uses 8 bytes. Allocating 2*134217728 elements = 2147483648 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.27084 MiB: 1024.00000 Copy: 3780.886 MiB/s
1 Method: MEMCPY Elapsed: 0.26853 MiB: 1024.00000 Copy: 3813.340 MiB/s
2 Method: MEMCPY Elapsed: 0.26685 MiB: 1024.00000 Copy: 3837.304 MiB/s
3 Method: MEMCPY Elapsed: 0.26641 MiB: 1024.00000 Copy: 3843.642 MiB/s
4 Method: MEMCPY Elapsed: 0.27048 MiB: 1024.00000 Copy: 3785.834 MiB/s
5 Method: MEMCPY Elapsed: 0.26700 MiB: 1024.00000 Copy: 3835.134 MiB/s
6 Method: MEMCPY Elapsed: 0.27118 MiB: 1024.00000 Copy: 3776.104 MiB/s
7 Method: MEMCPY Elapsed: 0.27515 MiB: 1024.00000 Copy: 3721.606 MiB/s
8 Method: MEMCPY Elapsed: 0.27256 MiB: 1024.00000 Copy: 3756.957 MiB/s
9 Method: MEMCPY Elapsed: 0.26711 MiB: 1024.00000 Copy: 3833.584 MiB/s
AVG Method: MEMCPY Elapsed: 0.26961 MiB: 1024.00000 Copy: 3798.043 MiB/s
0 Method: DUMB Elapsed: 0.16116 MiB: 1024.00000 Copy: 6354.092 MiB/s
1 Method: DUMB Elapsed: 0.16050 MiB: 1024.00000 Copy: 6379.943 MiB/s
2 Method: DUMB Elapsed: 0.16118 MiB: 1024.00000 Copy: 6353.224 MiB/s
3 Method: DUMB Elapsed: 0.16137 MiB: 1024.00000 Copy: 6345.862 MiB/s
4 Method: DUMB Elapsed: 0.16034 MiB: 1024.00000 Copy: 6386.628 MiB/s
5 Method: DUMB Elapsed: 0.16053 MiB: 1024.00000 Copy: 6378.830 MiB/s
6 Method: DUMB Elapsed: 0.16184 MiB: 1024.00000 Copy: 6327.198 MiB/s
7 Method: DUMB Elapsed: 0.16127 MiB: 1024.00000 Copy: 6349.679 MiB/s
8 Method: DUMB Elapsed: 0.16116 MiB: 1024.00000 Copy: 6354.052 MiB/s
9 Method: DUMB Elapsed: 0.16107 MiB: 1024.00000 Copy: 6357.682 MiB/s
AVG Method: DUMB Elapsed: 0.16104 MiB: 1024.00000 Copy: 6358.673 MiB/s
0 Method: MCBLOCK Elapsed: 0.18362 MiB: 1024.00000 Copy: 5576.735 MiB/s
1 Method: MCBLOCK Elapsed: 0.18377 MiB: 1024.00000 Copy: 5572.213 MiB/s
2 Method: MCBLOCK Elapsed: 0.18396 MiB: 1024.00000 Copy: 5566.427 MiB/s
3 Method: MCBLOCK Elapsed: 0.18418 MiB: 1024.00000 Copy: 5559.778 MiB/s
4 Method: MCBLOCK Elapsed: 0.18490 MiB: 1024.00000 Copy: 5538.219 MiB/s
5 Method: MCBLOCK Elapsed: 0.18587 MiB: 1024.00000 Copy: 5509.108 MiB/s
6 Method: MCBLOCK Elapsed: 0.18397 MiB: 1024.00000 Copy: 5566.034 MiB/s
7 Method: MCBLOCK Elapsed: 0.18440 MiB: 1024.00000 Copy: 5553.085 MiB/s
8 Method: MCBLOCK Elapsed: 0.18420 MiB: 1024.00000 Copy: 5559.175 MiB/s
9 Method: MCBLOCK Elapsed: 0.18551 MiB: 1024.00000 Copy: 5519.978 MiB/s
AVG Method: MCBLOCK Elapsed: 0.18444 MiB: 1024.00000 Copy: 5551.992 MiB/s
hmc@hmc-P55A-UD3:~$ mbw 512
Long uses 8 bytes. Allocating 2*67108864 elements = 1073741824 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.13962 MiB: 512.00000 Copy: 3667.070 MiB/s
1 Method: MEMCPY Elapsed: 0.13900 MiB: 512.00000 Copy: 3683.533 MiB/s
2 Method: MEMCPY Elapsed: 0.13892 MiB: 512.00000 Copy: 3685.627 MiB/s
3 Method: MEMCPY Elapsed: 0.13958 MiB: 512.00000 Copy: 3668.121 MiB/s
4 Method: MEMCPY Elapsed: 0.13903 MiB: 512.00000 Copy: 3682.605 MiB/s
5 Method: MEMCPY Elapsed: 0.14128 MiB: 512.00000 Copy: 3623.983 MiB/s
6 Method: MEMCPY Elapsed: 0.14006 MiB: 512.00000 Copy: 3655.628 MiB/s
7 Method: MEMCPY Elapsed: 0.14008 MiB: 512.00000 Copy: 3655.002 MiB/s
8 Method: MEMCPY Elapsed: 0.13891 MiB: 512.00000 Copy: 3685.760 MiB/s
9 Method: MEMCPY Elapsed: 0.13932 MiB: 512.00000 Copy: 3674.993 MiB/s
AVG Method: MEMCPY Elapsed: 0.13958 MiB: 512.00000 Copy: 3668.139 MiB/s
0 Method: DUMB Elapsed: 0.08039 MiB: 512.00000 Copy: 6369.031 MiB/s
1 Method: DUMB Elapsed: 0.08131 MiB: 512.00000 Copy: 6296.501 MiB/s
2 Method: DUMB Elapsed: 0.08040 MiB: 512.00000 Copy: 6368.159 MiB/s
3 Method: DUMB Elapsed: 0.08054 MiB: 512.00000 Copy: 6357.326 MiB/s
4 Method: DUMB Elapsed: 0.08120 MiB: 512.00000 Copy: 6305.263 MiB/s
5 Method: DUMB Elapsed: 0.08048 MiB: 512.00000 Copy: 6362.145 MiB/s
6 Method: DUMB Elapsed: 0.08099 MiB: 512.00000 Copy: 6321.846 MiB/s
7 Method: DUMB Elapsed: 0.08118 MiB: 512.00000 Copy: 6307.050 MiB/s
8 Method: DUMB Elapsed: 0.08055 MiB: 512.00000 Copy: 6356.064 MiB/s
9 Method: DUMB Elapsed: 0.08066 MiB: 512.00000 Copy: 6347.632 MiB/s
AVG Method: DUMB Elapsed: 0.08077 MiB: 512.00000 Copy: 6338.987 MiB/s
0 Method: MCBLOCK Elapsed: 0.09177 MiB: 512.00000 Copy: 5579.226 MiB/s
1 Method: MCBLOCK Elapsed: 0.09209 MiB: 512.00000 Copy: 5560.080 MiB/s
2 Method: MCBLOCK Elapsed: 0.09215 MiB: 512.00000 Copy: 5556.400 MiB/s
3 Method: MCBLOCK Elapsed: 0.09302 MiB: 512.00000 Copy: 5504.429 MiB/s
4 Method: MCBLOCK Elapsed: 0.09206 MiB: 512.00000 Copy: 5561.409 MiB/s
5 Method: MCBLOCK Elapsed: 0.09246 MiB: 512.00000 Copy: 5537.470 MiB/s
6 Method: MCBLOCK Elapsed: 0.09254 MiB: 512.00000 Copy: 5532.503 MiB/s
7 Method: MCBLOCK Elapsed: 0.09258 MiB: 512.00000 Copy: 5530.292 MiB/s
8 Method: MCBLOCK Elapsed: 0.09275 MiB: 512.00000 Copy: 5520.037 MiB/s
9 Method: MCBLOCK Elapsed: 0.09251 MiB: 512.00000 Copy: 5534.477 MiB/s
AVG Method: MCBLOCK Elapsed: 0.09239 MiB: 512.00000 Copy: 5541.551 MiB/s
hmc@hmc-P55A-UD3:~$ mbw 256
Long uses 8 bytes. Allocating 2*33554432 elements = 536870912 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.07053 MiB: 256.00000 Copy: 3629.713 MiB/s
1 Method: MEMCPY Elapsed: 0.07003 MiB: 256.00000 Copy: 3655.733 MiB/s
2 Method: MEMCPY Elapsed: 0.07104 MiB: 256.00000 Copy: 3603.807 MiB/s
3 Method: MEMCPY Elapsed: 0.07064 MiB: 256.00000 Copy: 3624.163 MiB/s
4 Method: MEMCPY Elapsed: 0.06991 MiB: 256.00000 Copy: 3661.694 MiB/s
5 Method: MEMCPY Elapsed: 0.07098 MiB: 256.00000 Copy: 3606.701 MiB/s
6 Method: MEMCPY Elapsed: 0.07023 MiB: 256.00000 Copy: 3644.958 MiB/s
7 Method: MEMCPY Elapsed: 0.07012 MiB: 256.00000 Copy: 3650.832 MiB/s
8 Method: MEMCPY Elapsed: 0.06997 MiB: 256.00000 Copy: 3658.815 MiB/s
9 Method: MEMCPY Elapsed: 0.07008 MiB: 256.00000 Copy: 3653.020 MiB/s
AVG Method: MEMCPY Elapsed: 0.07035 MiB: 256.00000 Copy: 3638.829 MiB/s
0 Method: DUMB Elapsed: 0.03986 MiB: 256.00000 Copy: 6422.156 MiB/s
1 Method: DUMB Elapsed: 0.03988 MiB: 256.00000 Copy: 6419.902 MiB/s
2 Method: DUMB Elapsed: 0.03997 MiB: 256.00000 Copy: 6405.124 MiB/s
3 Method: DUMB Elapsed: 0.03986 MiB: 256.00000 Copy: 6422.801 MiB/s
4 Method: DUMB Elapsed: 0.04007 MiB: 256.00000 Copy: 6388.979 MiB/s
5 Method: DUMB Elapsed: 0.03980 MiB: 256.00000 Copy: 6431.676 MiB/s
6 Method: DUMB Elapsed: 0.04020 MiB: 256.00000 Copy: 6368.793 MiB/s
7 Method: DUMB Elapsed: 0.04051 MiB: 256.00000 Copy: 6319.115 MiB/s
8 Method: DUMB Elapsed: 0.04023 MiB: 256.00000 Copy: 6362.620 MiB/s
9 Method: DUMB Elapsed: 0.04010 MiB: 256.00000 Copy: 6384.677 MiB/s
AVG Method: DUMB Elapsed: 0.04005 MiB: 256.00000 Copy: 6392.409 MiB/s
0 Method: MCBLOCK Elapsed: 0.04671 MiB: 256.00000 Copy: 5480.273 MiB/s
1 Method: MCBLOCK Elapsed: 0.04701 MiB: 256.00000 Copy: 5445.302 MiB/s
2 Method: MCBLOCK Elapsed: 0.04679 MiB: 256.00000 Copy: 5471.488 MiB/s
3 Method: MCBLOCK Elapsed: 0.04615 MiB: 256.00000 Copy: 5547.490 MiB/s
4 Method: MCBLOCK Elapsed: 0.04636 MiB: 256.00000 Copy: 5521.644 MiB/s
5 Method: MCBLOCK Elapsed: 0.04634 MiB: 256.00000 Copy: 5524.862 MiB/s
6 Method: MCBLOCK Elapsed: 0.04680 MiB: 256.00000 Copy: 5470.202 MiB/s
7 Method: MCBLOCK Elapsed: 0.04626 MiB: 256.00000 Copy: 5533.460 MiB/s
8 Method: MCBLOCK Elapsed: 0.04653 MiB: 256.00000 Copy: 5501.590 MiB/s
9 Method: MCBLOCK Elapsed: 0.04636 MiB: 256.00000 Copy: 5522.002 MiB/s
AVG Method: MCBLOCK Elapsed: 0.04653 MiB: 256.00000 Copy: 5501.649 MiB/s
Finally I got one to one exchanged after I send the Kingston memory for service.
8GB=2GB+2GB+2GB+2GB 2x DUAL CHANNEL
hmc@hmc-P55A-UD3:~/.mozilla/plugins$ mbw 1024
Long uses 8 bytes. Allocating 2*134217728 elements = 2147483648 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.27377 MiB: 1024.00000 Copy: 3740.366 MiB/s
1 Method: MEMCPY Elapsed: 0.27325 MiB: 1024.00000 Copy: 3747.525 MiB/s
2 Method: MEMCPY Elapsed: 0.27273 MiB: 1024.00000 Copy: 3754.588 MiB/s
3 Method: MEMCPY Elapsed: 0.27165 MiB: 1024.00000 Copy: 3769.626 MiB/s
4 Method: MEMCPY Elapsed: 0.27144 MiB: 1024.00000 Copy: 3772.417 MiB/s
5 Method: MEMCPY Elapsed: 0.27104 MiB: 1024.00000 Copy: 3778.096 MiB/s
6 Method: MEMCPY Elapsed: 0.27625 MiB: 1024.00000 Copy: 3706.760 MiB/s
7 Method: MEMCPY Elapsed: 0.27174 MiB: 1024.00000 Copy: 3768.280 MiB/s
8 Method: MEMCPY Elapsed: 0.27318 MiB: 1024.00000 Copy: 3748.485 MiB/s
9 Method: MEMCPY Elapsed: 0.27101 MiB: 1024.00000 Copy: 3778.486 MiB/s
AVG Method: MEMCPY Elapsed: 0.27261 MiB: 1024.00000 Copy: 3756.345 MiB/s
0 Method: DUMB Elapsed: 0.16348 MiB: 1024.00000 Copy: 6263.725 MiB/s
1 Method: DUMB Elapsed: 0.16312 MiB: 1024.00000 Copy: 6277.779 MiB/s
2 Method: DUMB Elapsed: 0.16424 MiB: 1024.00000 Copy: 6234.892 MiB/s
3 Method: DUMB Elapsed: 0.16255 MiB: 1024.00000 Copy: 6299.716 MiB/s
4 Method: DUMB Elapsed: 0.16270 MiB: 1024.00000 Copy: 6293.599 MiB/s
5 Method: DUMB Elapsed: 0.16331 MiB: 1024.00000 Copy: 6270.284 MiB/s
6 Method: DUMB Elapsed: 0.16300 MiB: 1024.00000 Copy: 6282.170 MiB/s
7 Method: DUMB Elapsed: 0.16328 MiB: 1024.00000 Copy: 6271.397 MiB/s
8 Method: DUMB Elapsed: 0.16315 MiB: 1024.00000 Copy: 6276.240 MiB/s
9 Method: DUMB Elapsed: 0.16307 MiB: 1024.00000 Copy: 6279.666 MiB/s
AVG Method: DUMB Elapsed: 0.16319 MiB: 1024.00000 Copy: 6274.902 MiB/s
0 Method: MCBLOCK Elapsed: 0.19477 MiB: 1024.00000 Copy: 5257.375 MiB/s
1 Method: MCBLOCK Elapsed: 0.19399 MiB: 1024.00000 Copy: 5278.623 MiB/s
2 Method: MCBLOCK Elapsed: 0.19529 MiB: 1024.00000 Copy: 5243.404 MiB/s
3 Method: MCBLOCK Elapsed: 0.19587 MiB: 1024.00000 Copy: 5228.064 MiB/s
4 Method: MCBLOCK Elapsed: 0.19450 MiB: 1024.00000 Copy: 5264.781 MiB/s
5 Method: MCBLOCK Elapsed: 0.19498 MiB: 1024.00000 Copy: 5251.767 MiB/s
6 Method: MCBLOCK Elapsed: 0.19489 MiB: 1024.00000 Copy: 5254.219 MiB/s
7 Method: MCBLOCK Elapsed: 0.19470 MiB: 1024.00000 Copy: 5259.238 MiB/s
8 Method: MCBLOCK Elapsed: 0.19503 MiB: 1024.00000 Copy: 5250.367 MiB/s
9 Method: MCBLOCK Elapsed: 0.19473 MiB: 1024.00000 Copy: 5258.617 MiB/s
AVG Method: MCBLOCK Elapsed: 0.19488 MiB: 1024.00000 Copy: 5254.615 MiB/s
hmc@hmc-P55A-UD3:~/.mozilla/plugins$ mbw 512
Long uses 8 bytes. Allocating 2*67108864 elements = 1073741824 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.13452 MiB: 512.00000 Copy: 3806.210 MiB/s
1 Method: MEMCPY Elapsed: 0.13578 MiB: 512.00000 Copy: 3770.806 MiB/s
2 Method: MEMCPY Elapsed: 0.13605 MiB: 512.00000 Copy: 3763.350 MiB/s
3 Method: MEMCPY Elapsed: 0.13528 MiB: 512.00000 Copy: 3784.687 MiB/s
4 Method: MEMCPY Elapsed: 0.13592 MiB: 512.00000 Copy: 3766.839 MiB/s
5 Method: MEMCPY Elapsed: 0.13602 MiB: 512.00000 Copy: 3764.235 MiB/s
6 Method: MEMCPY Elapsed: 0.13369 MiB: 512.00000 Copy: 3829.669 MiB/s
7 Method: MEMCPY Elapsed: 0.13598 MiB: 512.00000 Copy: 3765.121 MiB/s
8 Method: MEMCPY Elapsed: 0.13901 MiB: 512.00000 Copy: 3683.215 MiB/s
9 Method: MEMCPY Elapsed: 0.13823 MiB: 512.00000 Copy: 3703.891 MiB/s
AVG Method: MEMCPY Elapsed: 0.13605 MiB: 512.00000 Copy: 3763.356 MiB/s
0 Method: DUMB Elapsed: 0.07980 MiB: 512.00000 Copy: 6415.719 MiB/s
1 Method: DUMB Elapsed: 0.08045 MiB: 512.00000 Copy: 6364.439 MiB/s
2 Method: DUMB Elapsed: 0.07975 MiB: 512.00000 Copy: 6420.385 MiB/s
3 Method: DUMB Elapsed: 0.07991 MiB: 512.00000 Copy: 6407.529 MiB/s
4 Method: DUMB Elapsed: 0.07915 MiB: 512.00000 Copy: 6469.057 MiB/s
5 Method: DUMB Elapsed: 0.07941 MiB: 512.00000 Copy: 6447.145 MiB/s
6 Method: DUMB Elapsed: 0.07919 MiB: 512.00000 Copy: 6465.544 MiB/s
7 Method: DUMB Elapsed: 0.08044 MiB: 512.00000 Copy: 6364.676 MiB/s
8 Method: DUMB Elapsed: 0.07933 MiB: 512.00000 Copy: 6453.809 MiB/s
9 Method: DUMB Elapsed: 0.07942 MiB: 512.00000 Copy: 6447.064 MiB/s
AVG Method: DUMB Elapsed: 0.07968 MiB: 512.00000 Copy: 6425.332 MiB/s
0 Method: MCBLOCK Elapsed: 0.09705 MiB: 512.00000 Copy: 5275.685 MiB/s
1 Method: MCBLOCK Elapsed: 0.09741 MiB: 512.00000 Copy: 5255.972 MiB/s
2 Method: MCBLOCK Elapsed: 0.09755 MiB: 512.00000 Copy: 5248.806 MiB/s
3 Method: MCBLOCK Elapsed: 0.09784 MiB: 512.00000 Copy: 5233.247 MiB/s
4 Method: MCBLOCK Elapsed: 0.09781 MiB: 512.00000 Copy: 5234.853 MiB/s
5 Method: MCBLOCK Elapsed: 0.09760 MiB: 512.00000 Copy: 5245.633 MiB/s
6 Method: MCBLOCK Elapsed: 0.09735 MiB: 512.00000 Copy: 5259.481 MiB/s
7 Method: MCBLOCK Elapsed: 0.09764 MiB: 512.00000 Copy: 5243.591 MiB/s
8 Method: MCBLOCK Elapsed: 0.09764 MiB: 512.00000 Copy: 5243.591 MiB/s
9 Method: MCBLOCK Elapsed: 0.09803 MiB: 512.00000 Copy: 5223.051 MiB/s
AVG Method: MCBLOCK Elapsed: 0.09759 MiB: 512.00000 Copy: 5246.353 MiB/s
hmc@hmc-P55A-UD3:~/.mozilla/plugins$ mbw 256
Long uses 8 bytes. Allocating 2*33554432 elements = 536870912 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.06656 MiB: 256.00000 Copy: 3846.443 MiB/s
1 Method: MEMCPY Elapsed: 0.06772 MiB: 256.00000 Copy: 3780.439 MiB/s
2 Method: MEMCPY Elapsed: 0.06691 MiB: 256.00000 Copy: 3825.806 MiB/s
3 Method: MEMCPY Elapsed: 0.06685 MiB: 256.00000 Copy: 3829.240 MiB/s
4 Method: MEMCPY Elapsed: 0.06660 MiB: 256.00000 Copy: 3843.613 MiB/s
5 Method: MEMCPY Elapsed: 0.06633 MiB: 256.00000 Copy: 3859.549 MiB/s
6 Method: MEMCPY Elapsed: 0.06631 MiB: 256.00000 Copy: 3860.946 MiB/s
7 Method: MEMCPY Elapsed: 0.06636 MiB: 256.00000 Copy: 3857.920 MiB/s
8 Method: MEMCPY Elapsed: 0.06916 MiB: 256.00000 Copy: 3701.776 MiB/s
9 Method: MEMCPY Elapsed: 0.06583 MiB: 256.00000 Copy: 3888.864 MiB/s
AVG Method: MEMCPY Elapsed: 0.06686 MiB: 256.00000 Copy: 3828.782 MiB/s
0 Method: DUMB Elapsed: 0.04020 MiB: 256.00000 Copy: 6367.684 MiB/s
1 Method: DUMB Elapsed: 0.03981 MiB: 256.00000 Copy: 6431.030 MiB/s
2 Method: DUMB Elapsed: 0.04032 MiB: 256.00000 Copy: 6349.679 MiB/s
3 Method: DUMB Elapsed: 0.04047 MiB: 256.00000 Copy: 6325.361 MiB/s
4 Method: DUMB Elapsed: 0.04054 MiB: 256.00000 Copy: 6315.374 MiB/s
5 Method: DUMB Elapsed: 0.04039 MiB: 256.00000 Copy: 6337.732 MiB/s
6 Method: DUMB Elapsed: 0.03991 MiB: 256.00000 Copy: 6415.075 MiB/s
7 Method: DUMB Elapsed: 0.04110 MiB: 256.00000 Copy: 6228.710 MiB/s
8 Method: DUMB Elapsed: 0.03991 MiB: 256.00000 Copy: 6413.950 MiB/s
9 Method: DUMB Elapsed: 0.04009 MiB: 256.00000 Copy: 6384.995 MiB/s
AVG Method: DUMB Elapsed: 0.04027 MiB: 256.00000 Copy: 6356.442 MiB/s
0 Method: MCBLOCK Elapsed: 0.04697 MiB: 256.00000 Copy: 5450.752 MiB/s
1 Method: MCBLOCK Elapsed: 0.04661 MiB: 256.00000 Copy: 5492.501 MiB/s
2 Method: MCBLOCK Elapsed: 0.04729 MiB: 256.00000 Copy: 5413.063 MiB/s
3 Method: MCBLOCK Elapsed: 0.04693 MiB: 256.00000 Copy: 5455.165 MiB/s
4 Method: MCBLOCK Elapsed: 0.04758 MiB: 256.00000 Copy: 5380.073 MiB/s
5 Method: MCBLOCK Elapsed: 0.04689 MiB: 256.00000 Copy: 5460.052 MiB/s
6 Method: MCBLOCK Elapsed: 0.04754 MiB: 256.00000 Copy: 5385.052 MiB/s
7 Method: MCBLOCK Elapsed: 0.04731 MiB: 256.00000 Copy: 5410.889 MiB/s
8 Method: MCBLOCK Elapsed: 0.04789 MiB: 256.00000 Copy: 5345.137 MiB/s
9 Method: MCBLOCK Elapsed: 0.04723 MiB: 256.00000 Copy: 5420.628 MiB/s
AVG Method: MCBLOCK Elapsed: 0.04722 MiB: 256.00000 Copy: 5421.007 MiB/s
Conclusion
Comparing the 2GB+2GB , DUAL channel and non-dual channel configurations, we can it is about 50% faster for using dual channel setup.
Popular Posts
-
configured "CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 2 TIMES TO DISK; " when RMAN> delete noprompt archivelog u...
-
I have one PT env using storage sync for database sync. Thought need to re-register DB after DB refresh, so unregister and register again....
-
Encountered this problem during import data from 9i to 10g database. Table structure was already laid out. . . importing table &...
-
[symptoms] orarac2poc:ORCL2:/home/oracle> . ./oms_agent_env orarac2poc:ORCL2:/home/oracle> $AGENT_HOME/bin/emctl start agent Oracl...
-
I hit the error when using RMAN duplicate command to create a physical standby database, with purpose of using same directory structure in...
-
As I have CPU issue with physical standby database in previous post, I have to remove it before I have the solution. In 12c Enterprise Man... -
RMAN> show all; RMAN configuration parameters for database with db_unique_name ORCL are: CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # de...
-
after rounds of recovery testing, I believer there are tons of obsolete files in FRA. There are some stubborn datafile copy can't be de...
-
SQL> select * from dba_data_files where tablespace_name='TESTBS'; FILE_NAME ...
-
Oracle collects Active Session History (ASH) statistics (mostly wait statistics for different events) for all active sessions every second f...