Re: Algoritmic Complexity Attacks and 2.4.20 the dcache code
From: David S. Miller (firstname.lastname@example.org)
Date: Sat May 31 2003 - 04:04:30 EST
From: Willy Tarreau <willy@xxxxxxxxx>
Date: Sat, 31 May 2003 10:56:12 +0200
Considering that the Alpha and the UltraSparc can issue up to 4
instruction per cycle,
Ultrasparc only has 2 integer units. So it really can only do 2
integer operations per cycle. GCC is giving it an optimal schedule
for -mtune=ultrasparc, I know because I wrote that instruction
You can get 4 issue if you're doing floating point stuff.
I believe the current generation Alpha has 3 integer units.
GCC should be doing a good job there too.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/