Hi
I ripped regexp library from FreeBSD 4 and use it in another program. I
get random crashes because the library casts char to int and uses it as
array index ... the most obvious case is engine.i:189:
register char *dp;
dp += charjump[(int)*dp];
but there are many more and I'm
Hi
I ripped regexp library from FreeBSD 4 and use it in another program. I
get random crashes because the library casts char to int and uses it as
array index ... the most obvious case is engine.i:189:
register char *dp;
dp += charjump[(int)*dp];
but there are many more and I'm unable to spot
Hi
I use FreeBSD-4.9-RC1 on a machine with hyperthreading (it seems that
hyperthreading support was ripped out of final 4.9 release --- why?)
I get random SIGBUSes when compiling (once I got SIGSEGV too). When I
compile only with make -j 1, I get no errors. Is it known problem with
FreeBSD? Or
Hi
I use FreeBSD-4.9-RC1 on a machine with hyperthreading (it seems that
hyperthreading support was ripped out of final 4.9 release --- why?)
I get random SIGBUSes when compiling (once I got SIGSEGV too). When I
compile only with make -j 1, I get no errors. Is it known problem with
Hi
I installed FreeBSD 4.9RC1 on P4 3GHz with hyperthreading and I see
drastic slowdown when kernel with hyperthreading is booted. For example
program compilation took this time:
hyperthreading kernel, make -j 1 --- 1:09
hyperthreading kernel, make -j 2 --- 0:42
singlethreading kernel, make -j
In message [EMAIL PROTECTED], Kris Kennaway writes:
Yes, that's because (as discussed in the archives) the kernel treats
it like an extra, completely decoupled physical CPU and schedules
processes on it without further consideration. This is presumably the
cause of the slowdown, because it's
On Tue, 26 Aug 2003, Dan Lukes wrote:
Mikulas Patocka napsal/wrote, On 08/20/03 01:39:
I am reading FreeBSD ATA drivers because I want to use them as base for my
ATA driver and I found a total nonsence: in ata-dma.c in FreeBSD 4.8,
there is line
if (!((pci_read_config(parent,0x40,4
Hi
I am reading FreeBSD ATA drivers because I want to use them as base for my
ATA driver and I found a total nonsence: in ata-dma.c in FreeBSD 4.8,
there is line
if (!((pci_read_config(parent,0x40,4)(ch-unit8))0x4000)) {
if ch-unit is 1, config word is shifted by 256 bytes, which gives
On Wed, 20 Aug 2003, Mikulas Patocka wrote:
Hi
I am reading FreeBSD ATA drivers because I want to use them as base for my
ATA driver and I found a total nonsence: in ata-dma.c in FreeBSD 4.8,
there is line
if (!((pci_read_config(parent,0x40,4)(ch-unit8))0x4000)) {
if ch-unit is 1
The key thing with patents is that they are meaningless until the
patent holder decides to protect them in court by challenging the
people who are supposedly in violation of the patent. If a patent
holder decides to go after you, it can be costly even if you win.
They can't
: Well, the application date is what counts, and that's mar1992, but I'm
: pretty sure that Bill Jolitz had them beat to that date already...
I'm pretty sure that VMS 3.x used a similar technique. I have my old
VMS internals docs from that time frame (maybe they are from 4.x).
We're
So it looks like we have prior art by around 6 years, which would
invalidate the patent iff it was the same thing.
Does it mean that the algorithm is free to use by everyone or free to use
only in freebsd? I would like to implemet these page table back pointers
too and I'm scared by the
It skips queue pq[index PQ_L2_MASK].
That's correct. The inline function vm_page_list_find() in vm_page.h
has already failed to allocate a page of the desired color, index,
and so _vm_page_list_find() is called to allocate a page of ANY other
color it can find.
Oh, yes. I didn't
Hi.
Isn't the page coloring algoritm in _vm_page_list_find totally bogus?
It skips queue pq[index PQ_L2_MASK].
If it doesn't find page with desired color, it allocates page with nearest
color - as a result there are two pages with same color mapped at two
adjacent virtual adresses - this is
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