Hi again,
Now I have poked around some more in the current read-ahead code.
Both normal and mmaped.
This is how I think it best can be used for this specific application:
* Let the butler thread read big bursts from alternating channels, i.e.
not trying to keep all channels with equal read-ahead at all times.
Suppose there are n channels.
Init: let the butler read at least BUTLER_READ_AHEAD from all channels.
Cycle channels (i for all n): read BUTLER_READ_AHEAD from channel[i]
Master reads cached from all channels every cycle (Tmaster ms).
BUTLER_READ_AHEAD * Tbutler >= MASTER_READ * n * Tmaster
/RogerL
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Fri Apr 07 2000 - 21:00:07 EST