Starting a VM for Win98SE:
posidon:root> /usr/local/kvm-15/bin/qemu -m 128 -hda Win98SE-2.kvm
exception 13 (0)
rax f000ff53 rbx rcx 005a rdx
000e
rsi 001100c4 rdi 0002a002 rsp 00086650 rbp
667a
r8
al as long as there is a legitimate need to
support old hardware.
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ay also do that, with more or
less valid reasons.
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tes should be slower than O_DIRECT.
Other than the copy to buffer taking CPU and memory resources.
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already explained that that site has nothing to do with
kernel.org. why do you care?
Some people find the site useful for browsing this list. It's a
resource. Not all useful Linux sites are controlled by kernel.org.
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p/1GB bs=1M count=1024; sync"
which will actually time the write with the time command.
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Denis Vlasenko wrote:
On Friday 26 January 2007 19:23, Bill Davidsen wrote:
Denis Vlasenko wrote:
On Thursday 25 January 2007 21:45, Michael Tokarev wrote:
Phillip Susi wrote:
[...]
But even single-threaded I/O but in large quantities benefits from O_DIRECT
significantly, and I
Denis Vlasenko wrote:
On Saturday 27 January 2007 15:01, Bodo Eggert wrote:
Denis Vlasenko <[EMAIL PROTECTED]> wrote:
On Friday 26 January 2007 19:23, Bill Davidsen wrote:
Denis Vlasenko wrote:
On Thursday 25 January 2007 21:45, Michael Tokarev wrote:
But even single-thread
may assist in
understanding this. Either use RAID-10 or add md2 to the mdadm.conf to
get it started at boot. I suggest using RAID-10.
--
Bill Davidsen <[EMAIL PROTECTED]>
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Michael Tokarev wrote:
Bill Davidsen wrote:
[]
RAID-10 is not the same as RAID 0+1.
It is. Yes, there's separate module for raid10, but what it - basically -
does is the same as raid0 module over two raid1 modules will do. It's
just a bit more efficient (less levels, more room
people read that even if they can't cope with LKML volume.
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therefore it's a bad idea" type
simply contribute nothing.
Because user threading can avoid context switches, there will always be
cases where it will outperform o/s threads for hardware reasons.
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Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from the bungli
that.
I think you are just running out of bus.
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. at least this part of
your argument seems to be incorrect ;)
How does that work? Switching between kernel threads requires going into
the kernel, user level thread switches are all done in user mode.
Do you have some way to change o/s threads w/o going into the kernel?
--
Bill Davidsen <[EM
result, the
routing. And if that changes, it need only change in one place.
Making good administration difficult because it fits some pedantic metal
model is NOT a good way to decide which features to offer in a kernel.
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from the b
Jakub Jelinek wrote:
On Sun, Feb 04, 2007 at 03:12:32PM -0500, Bill Davidsen wrote:
Arjan van de Ven wrote:
Because user threading can avoid context switches, there will always be
cases where it will outperform o/s threads for hardware reasons.
actually.. switching from one
ostly" for remote mirrors I do have a few
systems doing >2 mirrors as well. This set of patches definitely will be
in my kernel by this afternoon.
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bill davidsen <[EMAIL PROTECTED]>
CTO TMR Associates, Inc
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able.
The nbd0 device _should_ feel an NBD_DISCONNECT because the nbd-server
is no longer running (the node it was running on was powered off)...
however the nbd-client is still connected to the kernel (meaning the
kernel didn't return an error back to userspace).
Also, MD is still blockin
series is
still passing my tests and Neil's tests in mdadm.
When you are ready for wider testing, if you have a patch against a
released kernel it makes testing easy, characteristics are pretty well
known already.
--
bill davidsen <[EMAIL PROTECTED]>
CTO TMR Associates, Inc
Doing inter
Paul Clements wrote:
Bill Davidsen wrote:
Second, AFAIK nbd hasn't working in a while. I haven't tried it in
ages, but was told it wouldn't work with smp and I kind of lost
interest. If Neil thinks it should work in 2.6.21 or later I'll test
it, since I have a machine which wants a fresh
ertise, and lots of time and
coffee?).
Well, I gave you two thoughts, one which would be slow until a repair
but sounds easy to do, and one which is slightly harder but works better
and minimizes performance impact.
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bill davidsen <[EMAIL PROTECTED]>
CTO TMR Associates, Inc
Doing
to a maintinance window and then recreate the array
and reload from backup.
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the b
. I am going to try some tests
on a uniprocessor, though, I have been running everything on either SMP
or HT CPUs. But so far it looks fine.
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Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from the bungling of the incompetent than from
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ow my movie and echo my typing, and if
that's hard on compiles or the file transfer, so be it. Con doesn't want
to compromise his goals, I agree but want to have an option if I don't
share them.
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from the bungling of t
has tried this, perhaps they would report what they saw. People are
talking about smoothness, but not how many pages per second come out of
their overloaded web server.
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Bill Davidsen <[EMAIL PROTECTED]>
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th
be soluble.
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d for some database applications, everyone in a group may connect with
the same login-id, then do sub authorization to the database
application. euid may be an issue there as well.
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Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from the bungling of the incompetent than f
retty nice
from many POVs) is the real challenge.
yeah.
Ingo
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The small attached script does a nice job of showing animation glitches
in the glxgears animation. I have run one set of tests, and will have
several more tomorrow. I'm off to a poker game, and would like to let
people draw their own conclusions.
Based on just this script as load I would say
I am not sure a binary attachment will go thru, I will move to the web
ste if not.
GL2.6.21-rc7-git6-CFSv5_nice0_jump
Description: Binary data
GL2.6.21-rc7-git6-CFSv5_nice0_nojump
Description: Binary data
GL2.6.21-rc7-git6-CFSv5_nice19_nojump
Description: Binary data
in stable and mainline before N+1 release.
Measuring releases or your own value against perfection is thankless!
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
-
To
ot;
of policy, I think that's a reasonable commitment to the people doing
the work.
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Bill Davidsen <[EMAIL PROTECTED]>
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have forgotten some things.
Honestly, I like this laptop when it works flawlessly, so I don't see
many reasons to try *susp* again. I'll do it when I'm bored, just not
today.
Actually on some old laptops I just use the apm command, with -s (or -S,
I forget by now), and that works.
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Bill Davidsen
doing, I wish I
could have found a nicer way to say that.
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em, VM, SysV
semaphore state, namespaces etc.
The "struct signal_struct" is the random *leftovers* from all the other
stuff. It's *not* about "processes". Never has been, and never will be.
I proposed "struct task_shared_ctx" but you ducked :)
Descriptive, correct,
umbers (even counting stats for
dead threads)
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ld getppid() and start sending signals to a program not expecting
them. Invites undefined behavior.
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e mounting garbage, and isn't
likely to suffer terminal damage.
I wonder what happens if the device is really read-only and the o/s
tries to replay the journal as part of a r/o mount? I suspect the system
will refuse totally with an i/o error, not what you want.
--
Bill Davidsen <[EMAIL PROT
Eric W. Biederman wrote:
Bill Davidsen <[EMAIL PROTECTED]> writes:
As long as the original parent is preserved for getppid(). There are programs
out there which communicate between the parent and child with signals, and if
the original parent dies, it undesirable to have the child g
with a company which seemed to have a whole part of
purchasing dedicated to buying same. :-(
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Mark Lord wrote:
[EMAIL PROTECTED] wrote:
From: Bill Davidsen
And having gotten same, are you going to code up what appears to be a
solution, based on this feedback?
The feedback was helpful in verifying whether there are any arguments
against my approach. The real proof is in the pudding
f power.
I haven't checked on that in a while, I'm just supplying one reason
since you wondered.
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Robert P. J. Day wrote:
On Tue, 17 Apr 2007, Bill Davidsen wrote:
Rafael J. Wysocki wrote:
[appropriate CCs added]
On Friday, 13 April 2007 02:33, Robert P. J. Day wrote:
just something i threw together, not in final form, but it represents
tossing the legacy PM stuff
relatively light load:
nice -10 make -j4 -s
of a kernel would cause jumps on the video, gears or youtube.
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Stefan Seyfried wrote:
Hi,
On Sat, May 26, 2007 at 06:42:37PM -0400, Bill Davidsen wrote:
I was testing susp2disk in 2.6.21.1 under FC6, to support reliable computing
environment (RCE) needs. The idea is that if power fails, after some short
time on UPS the system does susp2disk with a time
kernel, or that it should be added to gcc, but in some use like embedded
applications where memory use is an important cost driver, people are
probably doing it already by hand to pack struct arrays into minimal
bytes. It's neither impossible nor totally useless.
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bill davidsen <[EM
on... what people will tolerate is a bounded value.
Not an easy thing to do, but probably very complementary to your work IMHO.
Agree, not easy at all.
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bill davidsen <[EMAIL PROTECTED]>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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I am just running a new series of response tests, which I expect to send
to the list today or tomorrow. It includes operating at some high
(LA>20) loads, and gathering reproducible statistics. In the process I
used the file completion feature while load was high, and noted that
with sd0.48
I have posted the results of my initial testing, measuring IPC rates
using various schedulers under no load, limited nice load, and heavy
load at nice 0.
http://www.tmr.com/~davidsen/ctxbench_testing.html
--
bill davidsen <[EMAIL PROTECTED]>
CTO TMR Associates, Inc
Doing interesting
mmittee, a committee is a poor way to get
innovation, and a good way to have a bunch of know legible people shoot
down bad ideas.
It was a fun experience, where I first learned the modern equivalent of
Occam's Razor, Plauger's "Law of least astonishment," which compiler
writers r
]>
Status : Unknown
There is currently zero proof that this has anything to do with I2C.
I believe in another thread this has been traced to a change in the
interface and can be solved with an upgrade for the applet.
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear
g on three
machines, with dual-core, hyperthreaded uni, and pure uni. Unless I see
a hint that one of these cases is handled less well than the others I
won't compare.
--
Bill Davidsen
He was a full-time professional cat, not some moonlighting
ferret or weasel. He knew about these things.
a675
for -stable, if it isn't already there.
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lover who is a confessed serial killer.
I'm surprised the case hasn't been adapter for 'Boston legal' and 'Law
and Order' like other high profile crimes.
I see nothing wrong with jörnfs, and there's room for numbers at the end...
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have mor
workload where sequential write is dominant.
I also expect that FTL for PC environment will have better quality spec
than the disposable storage.
The recent technology announcements from Intel are encouraging in that
respect.
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more t
scheduler
developers would like me to try other tunings or new versions let me know.
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Ray Lee wrote:
On 5/19/07, Bill Davidsen <[EMAIL PROTECTED]> wrote:
I generated a table of results from the latest glitch1 script, using an
HTML postprocessor I not *quite* ready to foist on the word. In any case
it has some numbers for frames per second, fairness of the processo
e Core2duo in x86 (32 bit) mode, I'm
now off to rerun in x86_64 mode, and on a single CPU hyperthreaded
machine, and a pure uniprocessor. I'm going to create a page for all the
results in one place for anyone who cares.
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more to f
Miguel Figueiredo wrote:
Bill Davidsen wrote:
I generated a table of results from the latest glitch1 script, using
an HTML postprocessor I not *quite* ready to foist on the word. In
any case it has some numbers for frames per second, fairness of the
processor time allocated to the compute
It is derived from original LZO 2.02 code found at:
http://www.oberhumer.com/opensource/lzo/download/
The code has also been reformatted to match general kernel style.
--
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the m
r save for ipw2200 (and probably many other things).
Dare we hope that this will allow use of USB on laptops without draining
the battery?
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the same conditions as I did let me know your results.
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the machinations o
description it sounds as though it would be useful in
applications where voice connect was useful and visual wasn't, such as
blind users and embedded applications where a USB pluggable interface
might be useful in unusual situations.
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more t
sing sites with heavy JS and or flash usage. Mouse
movement is pathetic and audio starts to skip. I haven't face this behavior
with CFS till v11.
'm not seeing this, do have a site or two as examples?
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from the bungling of the
Ingo Molnar wrote:
* Bill Davidsen <[EMAIL PROTECTED]> wrote:
I have posted the results of my initial testing, measuring IPC rates
using various schedulers under no load, limited nice load, and heavy
load at nice 0.
http://www.tmr.com/~davidsen/ctxbench_testing.html
William Lee Irwin III wrote:
On Thu, May 17, 2007 at 07:26:38PM -0400, Bill Davidsen wrote:
I have posted the results of my initial testing, measuring IPC rates
using various schedulers under no load, limited nice load, and heavy
load at nice 0.
http://www.tmr.com/~davidsen
Miguel Figueiredo wrote:
Bill Davidsen wrote:
Miguel Figueiredo wrote:
Ray Lee wrote:
On 5/20/07, Miguel Figueiredo <[EMAIL PROTECTED]> wrote:
As I tryied myself kernels 2.6.21, 2.6.21-cfs-v13, and 2.6.21-ck2
on the
same machine i found *very* odd those numbers you posted, so i
I was unable to reproduce the numbers Miguel generated, comments below.
The -ck2 patch seems to run nicely, although the memory repopulation
from swap would be most useful on system which have a lot of memory
pressure.
Bill Davidsen wrote:
Miguel Figueiredo wrote:
Hi Bill,
if i've
Con Kolivas wrote:
On Wednesday 23 May 2007 10:28, Bill Davidsen wrote:
kernel2.6.21-cfs-v132.6.21-ck2
a)194464254669
b)54159124
Everyone seems to like ck2, this makes it look as if the video display
would be really pretty unusable. While sd-0.48 does
t rig, based on a 15
year old boy and several cans of high caffeine soda, is used for. ;-)
Anyway, I'm still in the process of collecting data or more precisely
until recently constantly refined what data to collect and how. I plan
to provide new benchmark results on CPU intensive tasks in a couple
Miguel Figueiredo wrote:
Bill Davidsen wrote:
I was unable to reproduce the numbers Miguel generated, comments
below. The -ck2 patch seems to run nicely, although the memory
repopulation from swap would be most useful on system which have a
lot of memory pressure.
I spent a few hours
." cases, could someone cover
this and state that it either can't happen because {reason} or that if
it does the result will be {description}.
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does fine.
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in POST at cold boot. It may
need some BIOS setting to be visible.
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Junio C Hamano wrote:
This introduces a shared header file that defines the entries
for two dma blacklists in ide-dma.c and libata-core.c to make it
easier to keep them in sync.
Why wasn't this done this way in the first place? Out of tree
development for libata or something?
--
Bill
.
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Not in the ABI doc, is there and doc at all, and if not could someone
who knows where it's used might give me a hint, as a quick look didn't
bring enlightenment. Or is it a future hook which doesn't work yet?
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from t
Rafael J. Wysocki wrote:
Hi,
On Sunday, 27 May 2007 01:51, Bill Davidsen wrote:
Not in the ABI doc, is there and doc at all, and if not could someone
who knows where it's used might give me a hint, as a quick look didn't
bring enlightenment. Or is it a future hook which doesn't work yet
David Greaves wrote:
Bill Davidsen wrote:
Anyway, I pulled the plug on the UPS, and the system shut down. But when
it powered up, it booted the default kernel rather than the test kernel,
decided that it couldn't resume, and then did a cold boot.
Booting the machine isn't the kernel's job
Rafael J. Wysocki wrote:
On Sunday, 27 May 2007 14:53, Bill Davidsen wrote:
Rafael J. Wysocki wrote:
Hi,
On Sunday, 27 May 2007 01:51, Bill Davidsen wrote:
Not in the ABI doc, is there and doc at all, and if not could someone
who knows where it's used might give me a hint
Pavel Machek wrote:
On Sat 2007-05-26 18:42:37, Bill Davidsen wrote:
I was testing susp2disk in 2.6.21.1 under FC6, to
support reliable computing environment (RCE) needs. The
idea is that if power fails, after some short time on
UPS the system does susp2disk with a time set, and boots
Bill Davidsen wrote:
Pavel Machek wrote:
On Sat 2007-05-26 18:42:37, Bill Davidsen wrote:
I was testing susp2disk in 2.6.21.1 under FC6, to support reliable
computing environment (RCE) needs. The idea is that if power fails,
after some short time on UPS the system does susp2disk with a time
, rather than have code in each f/s to cope
with odd behavior.
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Doing interesting things with small computers since 1979
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the body of a mess
time to iowait instead of system
I don't see anything to fix, but I would like to understand.
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birds with a single store, but will avoid having to
re-solve the problem at sometime in the future. That's good software!
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"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
Linux code, including x86_64 3D drivers, was released in April, so
there's no lack of new features and activity.
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from the bungling of the incompetent than from
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-
To
Satyam Sharma wrote:
Hi Bill,
On 5/29/07, Bill Davidsen <[EMAIL PROTECTED]> wrote:
I recently noted that my system was spending a lot of time in i/o wait
when doing some tasks which I thought didn't involve i/o, as noted by
the lack of disk light activity most of the time. I thought of n
Rik van Riel wrote:
Bill Davidsen wrote:
I recently noted that my system was spending a lot of time in i/o
wait when doing some tasks which I thought didn't involve i/o, as
noted by the lack of disk light activity most of the time. I thought
of network, certainly the NIC had no activity
rpm drive.
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e, it's at a level closer to the
device, and status should come back from the physical i/o request.
For 'iscsi', I guess it works just the same as SCSI...
Hopefully.
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bill davidsen <[EMAIL PROTECTED]>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
proposed
a project which uses one? :-(
I think the goal is good, more choice is almost always better choice, I
just want to be sure there won't be big disk performance regressions.
--
bill davidsen <[EMAIL PROTECTED]>
CTO TMR Associates, Inc
Doing interesting things with small computers
Jens Axboe wrote:
On Thu, May 31 2007, Bill Davidsen wrote:
Jens Axboe wrote:
On Thu, May 31 2007, David Chinner wrote:
On Thu, May 31, 2007 at 08:26:45AM +0200, Jens Axboe wrote:
On Thu, May 31 2007, David Chinner wrote:
IOWs, there are two
anything special about getting it
onto the media.
My impression is that the sync will return when the i/o has been
delivered to the device, and will get special treatment by the elevator
code (I looked quickly, more is needed). I'm sore someone will tell me
if I misread this. ;-)
--
bill
.
Battery backed cache doesn't prevect failures between the cache and the
platter.
--
bill davidsen <[EMAIL PROTECTED]>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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the b
Jens Axboe wrote:
On Fri, Jun 01 2007, Bill Davidsen wrote:
Jens Axboe wrote:
On Thu, May 31 2007, Bill Davidsen wrote:
Jens Axboe wrote:
On Thu, May 31 2007, David Chinner wrote:
On Thu, May 31, 2007 at 08:26:45AM +0200, Jens Axboe wrote
s a proof of concept for a pthreads presentation I was giving, and it
happened to be useful.
--
Bill Davidsen <[EMAIL PROTECTED]>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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Lee Revell wrote:
On 5/8/07, Bill Davidsen <[EMAIL PROTECTED]> wrote:
I think I have a reasonable grip on the voluntary and full preempt
models, can anyone give me any wisdom on the preempt of the BKL? I know
what it does, the question is where it might make a difference under
normal
to be a
+"stupid legacy" issue in this regard.
It would seem that any variable which is (a) subject to change by other
threads or hardware, and (b) the value of which is going to be used
without writing the variable, would be a valid use for volatile.
--
Bill Davidsen <[EMAIL PROTECTED
Krzysztof Halasa wrote:
Robert Hancock <[EMAIL PROTECTED]> writes:
You don't need volatile in that case, rmb() can be used.
rmb() invalidates all compiler assumptions, it can be much slower.
Yes, why would you use rmb() when a read of a volatile generates optimal
code?
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