I just double-checked for certainty and it looks good:
sdhc0: SDHC 3.0, rev 153, platform DMA, 250000 kHz, HS SDR50 3.3V,
re-tuning mode 1, 1024 byte blocks
sdmmc0 at sdhc0 slot 0
uhub0 at usb0: vendor 0000 DWC2 root hub, class 9/0, rev 2.00/1.00, addr 1
uhub0: 1 port with 1 removable, self powered
uhub1 at uhub0 port 1: vendor 0424 product 9514, class 9/0, rev 2.00/2.00,
addr 2
uhub1: multiple transaction translators
uhub1: 5 ports with 4 removable, self powered
ld0 at sdmmc0: <0x82:0x4a54:NCard:0x10:0x3360f1f3:0x0ea>
ld0: 15087 MB, 7663 cyl, 64 head, 63 sec, 512 bytes/sect x 30898176 sectors
ld0: 4-bit width, SDR50, 100.000 MHz
Sequential write speed was about 8,6 MB/s this time. However, it fluctuates
between ~3 - 11 MB/s.
tty ld0 CPU
tin tout KB/t t/s MB/s us ni sy in id
2 50 52.15 79 4.034 0 0 12 1 86
0 44 62.86 55 3.403 0 0 25 0 75
0 44 62.84 54 3.342 0 0 15 0 84
0 44 61.63 53 3.218 0 0 7 0 93
0 44 62.59 44 2.663 1 0 5 0 93
0 44 60.20 132 7.741 0 0 16 1 82
0 44 62.51 128 7.797 1 0 14 0 85
0 44 63.50 127 7.859 0 0 14 0 85
0 44 64.00 126 7.859 1 0 15 0 83
0 44 59.48 160 9.317 0 0 22 1 77
0 7553 64.00 110 6.869 1 0 15 0 83
0 44 52.44 160 8.215 0 0 15 0 84
0 44 64.00 177 11.08 0 0 23 0 77
0 44 64.00 177 11.08 0 0 23 2 75
0 44 64.00 167 10.46 2 0 20 2 76
tty ld0 CPU
tin tout KB/t t/s MB/s us ni sy in id
0 44 63.73 175 10.91 0 0 23 0 77
0 131 64.00 121 7.550 0 0 16 1 83
0 44 63.20 79 4.889 0 0 11 0 89
0 44 63.61 164 10.21 1 0 21 0 78
0 44 64.00 174 10.89 0 0 24 5 71
0 44 63.63 169 10.52 1 0 21 1 77
0 44 64.00 73 4.579 0 0 9 0 91
1 158 62.93 177 10.89 0 0 14 0 86
0 44 58.70 82 4.711 0 0 3 1 96
0 44 61.79 106 6.393 0 0 0 1 99
0 44 0.000 0 0.000 0 0 0 0 100
0 45 0.000 0 0.000 0 0 0 0 100
This is the locking situation within a 30 sec. period:
Elapsed time: 30.00 seconds.
-- Adaptive mutex spin
Total% Count Time/ms Lock Caller
------ ------- --------- ----------------------
------------------------------
72.12 1236 2.97 0000000081d48a00 <all>
11.94 192 0.49 0000000081d48a00 uvm_aio_aiodone+b4
10.28 111 0.42 0000000081d48a00 ufs_balloc_range+114
7.50 173 0.31 0000000081d48a00 biodone2+18
6.88 86 0.28 0000000081d48a00 genfs_getpages+30c
6.44 117 0.26 0000000081d48a00 uvm_aio_aiodone_pages+68
6.22 103 0.26 0000000081d48a00 genfs_lock+68
4.96 114 0.20 0000000081d48a00 biowait+18
4.53 84 0.19 0000000081d48a00 uvm_vnp_setwritesize+20
4.03 92 0.17 0000000081d48a00 brelsel+268
2.92 43 0.12 0000000081d48a00 ufs_balloc_range+1f0
2.40 46 0.10 0000000081d48a00 uvm_vnp_setsize+48
2.31 45 0.09 0000000081d48a00 ufs_post_write_update.isra.2+9c
1.09 14 0.04 0000000081d48a00 ubc_fault+1f4
0.24 8 0.01 0000000081d48a00 ubc_alloc+53c
0.14 3 0.01 0000000081d48a00 nestiobuf_done+24
0.09 2 0.00 0000000081d48a00 genfs_getpages+38c
0.06 1 0.00 0000000081d48a00 ffs_write+408
0.06 1 0.00 0000000081d48a00 ubc_fault+13c
0.02 1 0.00 0000000081d48a00 bdwrite+a4