Messages in this thread | | | Date | Sat, 12 Jan 2008 13:58:02 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] serial: remove "too much work for irq" printk |
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Alan Cox wrote: >> This is going to put trouble in other places unless, at least, it can be >> turned off. The UART serial interface is heavily emulated as a console >> interface without an actual serial port behind it, both in hardware and >> software. Rates will typically vastly exceed real serial port rates, > > Yes Dell do it, HP do it, IBM do it. Have done for years, never caused us > a problem. Its only KVM tripping it. > > As to bit rate we support up to about 1 to 1.5 Mbit. >
FWIW, the highest rate I've seen in hardware is a FIFO about 4K deep that can be polled at about 25 MHz when all the overhead is accounted for.
-hpa
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