In article <[EMAIL PROTECTED]>, Daniel B. <[EMAIL PROTECTED]> wrote: >Does anyone know why Linux can't seem to maintain a diald-dialed serial >PPP connection while performing lots of disk I/O, especially on a PIO-mode >IDE disk?
Because the IDE driver turns off interrupt processing completely when issuing commands to / reading data from the drive. With DMA, you don't really notice, in PIO mode, you do .. >Does the kernel not handle serial port interrupts with higher priority >than disk interrupts to make sure that serial data doesn't overrun >buffers? Because the IDE driver simply turns all interrupts *off* ... To change this, see "man hdparm", -u option. Mike. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
