Comment 43 for bug 31709

K3B as well as growisofs show very poor burning speed here.

~> dmesg | grep DMA
[ 0.000000] DMA 0x00000000 -> 0x00001000
[ 0.000000] DMA zone: 32 pages used for memmap
[ 0.000000] DMA zone: 0 pages reserved
[ 0.000000] DMA zone: 3939 pages, LIFO batch:0
[ 1.991904] ata1: SATA max UDMA/133 cmd 0x30b0 ctl 0x30a4 bmdma 0x3090 irq 23
[ 1.991907] ata2: SATA max UDMA/133 cmd 0x30a8 ctl 0x30a0 bmdma 0x3098 irq 23
[ 2.876235] ata1.00: ATA-7: Hitachi HTS541616J9SA00, SB4OC7BP, max UDMA/100
[ 2.892248] ata1.00: configured for UDMA/100
[ 4.061904] ata3: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0x3080 irq 14
[ 4.061907] ata4: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0x3088 irq 15
[ 4.388465] ata4.00: ATAPI: MATSHITADVD-RAM UJ-851S, 1.50, max MWDMA2