search for: bogos

Hi ! Kenrel 2.6.21 (kernel.org) Patch lguest-2.6.21-254.patch Distro Slackware 11.0 GCC 3.4.6 GLIBC 2.3.6 HW model name : AMD Duron(tm) procu{s{ Module Size Used by tun 7680 0 lg 54600 0 just started playing with lguest - patching, compiling and booting the host-kernel goes ok - compiling lguest is ok as well after

Hi ! Kenrel 2.6.21 (kernel.org) Patch lguest-2.6.21-254.patch Distro Slackware 11.0 GCC 3.4.6 GLIBC 2.3.6 HW model name : AMD Duron(tm) procu{s{ Module Size Used by tun 7680 0 lg 54600 0 just started playing with lguest - patching, compiling and booting the host-kernel goes ok - compiling lguest is ok as well after

...tion). By using `test::black_box`, one would have ```rust #[bench] fn bench_xor_1000_ints(b: &mut Bencher) { b.iter(|| { let n = test::black_box(1000); // optional test::black_box((0..n).fold(0, |old, new| old ^ new)); }); } ``` and the microbenchmark wouldn't have bogos 0ns measurements anymore. Now, as I stated in the proposal, `test::black_box` currently uses no-op inline asm to "read" from its argument in a way the optimizations can't see. Conceptually, this seems like something that should be modelled in LLVM's IR rather than by hacks higher...

On Mon, Nov 2, 2015 at 9:16 PM, Daniel Berlin <dberlin at dberlin.org> wrote: > I'm very unclear and why you think a generic black box intrinsic will have > any different performance impact ;-) > > > I'm also unclear on what the goal with this intrinsic is. > I understand the symptoms you are trying to solve - what exactly is the > disease. > > IE you say

Can you say a Virtualized Asterisk with a PRI card! http://www.phoronix.com/scan.php?page=news_item&px=OTY0OQ Doug -- Ben Franklin quote: "Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety."

Hi. I experimented a bit with collecting entropy from the time it takes for device_attach() to run (in CPU cycles). It seems that those times have enough variation that we can use it for entropy harvesting. It happens even before root is mounted, so pretty early. On the machine I'm testing it, which has minimal kernel plus NIC driver I see 75 device_attach() calls. I'm being very careful