>
> I have an application where I need to receive data constantly on
> a serial port at 38,400. When we write the data to a database,
> we constantly see dropped chars on the incoming serial port.
>
> Is the stock PC serial hardware capable of sustained thruput at
> 38.4K?
Easily, modulo other peripherals which can interfere with this.
> Is there an ioctl option or something to improve the buffering
> on the serial ports ?
No. You probably have a PCI peripheral that's hogging the bus for
sufficiently long to cause the FIFO in your serial device to overflow.
IDE disks doing DMA are prime culprits for this, and X servers have been
known to cause it as well (by disabling interrupts entirely).
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