[LCP] Questions Regarding FIFO

[Ludwig Isaac Lim]

Hi:

   According to Linux man pages fifo(7), when processes
exchange data using a fifo, the kernel passes all data
internaly without writing to a file.

   Supposing I have a "producer" process which passes data
to "consumer" process using a fifo, and the consumer
process is slower than the producer. Where does  the kernel
store the unprocessed messages? Assuming the kernel stored
it in the memory. Is there a limitation on the size of the
"backlog"? Is there something like message queue's MSGMAX
and MSGMNB parameters?

   Many thanks,

ludwig lim


       
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