Venti dumps were taking forever, so we investigated... turns out DMA was turned off. I know I said "use DMA" when I installed, and plan9.ini contains dmamode=ask, but DMA is not enabled at boot and I am not asked if I want to use DMA. Additionally, the dmamode= option is not documented in plan9.ini(8); I'm looking at the source right now but so far I've been unable to find where the value is read. I thought options given at installation were used in the system after installing? I know that's the case for mouseport and vgasize, but not for DMA? Why isn't dmamode= documented in plan9.ini(8)? Do you turn on DMA in plan9.ini or by just putting an echo command in cpurc?
John
