Re: Cache incoherencies

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 27 Aug 1999 00:33:02 +0100 (BST)

Messages sorted by: [ date ][ thread ][ subject ][ author ]
Next message: Shane Shrybman: "Re: 2.0.38 compiling problems - gcc 2.7.2.1"
Previous message: Joe: "searchable kernel archive"
In reply to: Christian Groessler: "compile of 2.2.12 SMP fails on i386"
Next in thread: Andrea Arcangeli: "Re: Cache incoherencies"

> Say i have 12Mb RAM. So that's 3 4Mb pages. When I need an uncached
> page, I'd map it into the 64M-68M range, mark that range as uncached,
> and return the pointer in the 64-68M range. Now we have a "hole" in

And the rest of that 4Mb range is loaded with critical data now running
uncached. Your box crawls like a 286.

Play again ?

Alan

-
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/

Next message: Shane Shrybman: "Re: 2.0.38 compiling problems - gcc 2.7.2.1"
Previous message: Joe: "searchable kernel archive"
In reply to: Christian Groessler: "compile of 2.2.12 SMP fails on i386"
Next in thread: Andrea Arcangeli: "Re: Cache incoherencies"