Re: Availability of kdb

2000-09-19 Thread Marek Habersack
** On Sep 19, Marty Fouts scribbled: > Gene did the instruction set architecture along with some others. I think he > was also involved in the i/o architecture. Marty, could you _please_ stop posting to this thread on lkml and _PLEASE_ learn how to snip messages and _DON'T_ quote everything you

RE: Availability of kdb

2000-09-19 Thread Tigran Aivazian
On Mon, 18 Sep 2000, Marty Fouts wrote: > It contains a wee bit of wisdom. be not wise in thine own eyes, yea, let other man praise thee. ;) Regards, Tigran - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the

RE: Availability of kdb

2000-09-19 Thread Tigran Aivazian
On Mon, 18 Sep 2000, Marty Fouts wrote: It contains a wee bit of wisdom. be not wise in thine own eyes, yea, let other man praise thee. ;) Regards, Tigran - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the

Re: Availability of kdb

2000-09-19 Thread Marek Habersack
** On Sep 19, Marty Fouts scribbled: Gene did the instruction set architecture along with some others. I think he was also involved in the i/o architecture. Marty, could you _please_ stop posting to this thread on lkml and _PLEASE_ learn how to snip messages and _DON'T_ quote everything you

Re: Availability of kdb

2000-09-18 Thread Keith Owens
Please kill this thread. Linus has stated he does not want a kernel debugger in the standard kernel. As the maintainer of kdb I accept that decision and will maintain kdb outside the kernel. Any other discussion is just noise. - To unsubscribe from this list: send the line "unsubscribe

RE: Availability of kdb

2000-09-18 Thread Marty Fouts
] Subject: RE: Availability of kdb Gene Amdahl I think... On Mon, 18 Sep 2000, Marty Fouts wrote: > I think that more people quote Brooks than have read him and that more > people know him from the Mythical Man Month than from the POO. > > He wasn't, by the way, the principle architect o

RE: Availability of kdb

2000-09-18 Thread Joel Jaeggli
TED]] > Sent: Monday, September 18, 2000 3:22 AM > To: [EMAIL PROTECTED] > Subject: Re: Availability of kdb > > Marty Fouts writes: > > Here's another piece of free advice, worth less than you paid for it: in > 25 > > years, only the computer history trivia geeks are going

RE: Availability of kdb

2000-09-18 Thread Marty Fouts
of MMM is Brooks' apology to Gries about being wrong about information hiding. -Original Message- From: Malcolm Beattie [mailto:[EMAIL PROTECTED]] Sent: Monday, September 18, 2000 3:22 AM To: [EMAIL PROTECTED] Subject: Re: Availability of kdb Marty Fouts writes: > Here's another pi

RE: Availability of kdb

2000-09-18 Thread Marty Fouts
AM To: Marty Fouts Cc: 'Larry McVoy'; 'Linus Torvalds'; Oliver Xymoron; Daniel Phillips; Kernel Mailing List Subject: RE: Availability of kdb On Sun, 17 Sep 2000, Marty Fouts wrote: > I've probably debugged more operating systems under more varied environments > than nearly anyone here,

Re: Availability of kdb

2000-09-18 Thread Jeff V. Merkey
"J. Dow" wrote: > > Jeff et al who might prefer a kernel debugger, > > One should note that when a person or critter is backed into a corner > and pressured hard enough that he makes an "over my dead body" > level statement more pressure is likely to solidify the position rather > than change

Re: Availability of kdb

2000-09-18 Thread J. Dow
From: "Jeff V. Merkey" <[EMAIL PROTECTED]> > > Marty, > > I think they said they could care less about kernel debuggers. Just go > write one, use Keith's or ours or whatever, and do what you want with > your Linux development -- Linus doesn't seem to care if you just make a > fork of Linux or

Re: Availability of kdb

2000-09-18 Thread yodaiken
On Sun, Sep 17, 2000 at 08:40:33PM -0700, Larry McVoy wrote: > On Sun, Sep 17, 2000 at 02:33:40PM -0700, Marty Fouts wrote: > I'm sort of in the middle. I know BitKeeper very well, and it's actually > a larger wad of code than the kernel if you toss out the device drivers. > About the only thing

Re: Availability of kdb

2000-09-18 Thread Jeff V. Merkey
Marty, I think they said they could care less about kernel debuggers. Just go write one, use Keith's or ours or whatever, and do what you want with your Linux development -- Linus doesn't seem to care if you just make a fork of Linux or someone else does with a debugger for your projects.

Re: Availability of kdb

2000-09-18 Thread Malcolm Beattie
Marty Fouts writes: > Here's another piece of free advice, worth less than you paid for it: in 25 > years, only the computer history trivia geeks are going to remember you, > just as only a very small handful of us now remember who wrote OS/360. You mean like Fred Brooks who managed the

RE: Availability of kdb

2000-09-18 Thread Tigran Aivazian
On Sun, 17 Sep 2000, Marty Fouts wrote: > I've probably debugged more operating systems under more varied environments > than nearly anyone here, having brought up a new OS, compiler, and CPU yea yea yea, if you are so good then you should be concentrating on giving your goodness and wisdom and

RE: Availability of kdb

2000-09-18 Thread Marty Fouts
17, 2000 10:40 PM To: Marty Fouts Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: Availability of kdb From: Marty Fouts <[EMAIL PROTECTED]> Date:Sun, 17 Sep 2000 22:42:22 -0700 I've pr

RE: Availability of kdb

2000-09-18 Thread Tigran Aivazian
On Sun, 17 Sep 2000, Marty Fouts wrote: I've probably debugged more operating systems under more varied environments than nearly anyone here, having brought up a new OS, compiler, and CPU yea yea yea, if you are so good then you should be concentrating on giving your goodness and wisdom and

Re: Availability of kdb

2000-09-18 Thread Malcolm Beattie
Marty Fouts writes: Here's another piece of free advice, worth less than you paid for it: in 25 years, only the computer history trivia geeks are going to remember you, just as only a very small handful of us now remember who wrote OS/360. You mean like Fred Brooks who managed the development

RE: Availability of kdb

2000-09-18 Thread Marty Fouts
AM To: Marty Fouts Cc: 'Larry McVoy'; 'Linus Torvalds'; Oliver Xymoron; Daniel Phillips; Kernel Mailing List Subject: RE: Availability of kdb On Sun, 17 Sep 2000, Marty Fouts wrote: I've probably debugged more operating systems under more varied environments than nearly anyone here, having

RE: Availability of kdb

2000-09-18 Thread Joel Jaeggli
] Subject: Re: Availability of kdb Marty Fouts writes: Here's another piece of free advice, worth less than you paid for it: in 25 years, only the computer history trivia geeks are going to remember you, just as only a very small handful of us now remember who wrote OS/360. You mean

RE: Availability of kdb

2000-09-18 Thread Marty Fouts
] Subject: RE: Availability of kdb Gene Amdahl I think... On Mon, 18 Sep 2000, Marty Fouts wrote: I think that more people quote Brooks than have read him and that more people know him from the Mythical Man Month than from the POO. He wasn't, by the way, the principle architect of OS/360; he

Re: Availability of kdb

2000-09-18 Thread Keith Owens
Please kill this thread. Linus has stated he does not want a kernel debugger in the standard kernel. As the maintainer of kdb I accept that decision and will maintain kdb outside the kernel. Any other discussion is just noise. - To unsubscribe from this list: send the line "unsubscribe

Re: Availability of kdb

2000-09-18 Thread Jeff V. Merkey
Marty, I think they said they could care less about kernel debuggers. Just go write one, use Keith's or ours or whatever, and do what you want with your Linux development -- Linus doesn't seem to care if you just make a fork of Linux or someone else does with a debugger for your projects.

Re: Availability of kdb

2000-09-18 Thread yodaiken
On Sun, Sep 17, 2000 at 08:40:33PM -0700, Larry McVoy wrote: On Sun, Sep 17, 2000 at 02:33:40PM -0700, Marty Fouts wrote: I'm sort of in the middle. I know BitKeeper very well, and it's actually a larger wad of code than the kernel if you toss out the device drivers. About the only thing I

Re: Availability of kdb

2000-09-18 Thread J. Dow
From: "Jeff V. Merkey" [EMAIL PROTECTED] Marty, I think they said they could care less about kernel debuggers. Just go write one, use Keith's or ours or whatever, and do what you want with your Linux development -- Linus doesn't seem to care if you just make a fork of Linux or someone

Re: Availability of kdb

2000-09-18 Thread Jeff V. Merkey
"J. Dow" wrote: Jeff et al who might prefer a kernel debugger, One should note that when a person or critter is backed into a corner and pressured hard enough that he makes an "over my dead body" level statement more pressure is likely to solidify the position rather than change it. In

RE: Availability of kdb

2000-09-18 Thread Marty Fouts
17, 2000 10:40 PM To: Marty Fouts Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: Availability of kdb From: Marty Fouts [EMAIL PROTECTED] Date:Sun, 17 Sep 2000 22:42:22 -0700 I've probably debugged

Re: Availability of kdb

2000-09-17 Thread David S. Miller
From: Marty Fouts <[EMAIL PROTECTED]> Date:Sun, 17 Sep 2000 22:42:22 -0700 I've probably debugged more operating systems under more varied environments than nearly anyone here Which one of them was %100 distributed where no two of the developers were in the same building and

RE: Availability of kdb

2000-09-17 Thread Marty Fouts
0 8:41 PM To: Marty Fouts Cc: 'Linus Torvalds'; Oliver Xymoron; Tigran Aivazian; Daniel Phillips; Kernel Mailing List Subject: Re: Availability of kdb On Sun, Sep 17, 2000 at 02:33:40PM -0700, Marty Fouts wrote: > Um, for what ever it is worth, if you want to compare "power user" carp

RE: Availability of kdb

2000-09-17 Thread Marty Fouts
er Xymoron; Tigran Aivazian; Daniel Phillips; Kernel Mailing List Subject: RE: Availability of kdb On Sun, 17 Sep 2000, Marty Fouts wrote: > > Craftsmanship is in the way you approach what you do, not in the tools you > use to do it. And, frankly, if you wish to artificially limit your u

Re: Availability of kdb

2000-09-17 Thread Larry McVoy
On Sun, Sep 17, 2000 at 02:33:40PM -0700, Marty Fouts wrote: > Um, for what ever it is worth, if you want to compare "power user" carpentry > to "hand tools only" you can actually do it fairly easily on PBS in the US. > There used to be a program done by a guy who did everything by hand. I >

Re: Availability of kdb

2000-09-17 Thread root
Linus Torvalds wrote: > On Sun, 17 Sep 2000, Marty Fouts wrote: > > > > Craftsmanship is in the way you approach what you do, not in the tools you > > use to do it. And, frankly, if you wish to artificially limit your use of > > tools, all you are doing is hobbling yourself. > > You know what?

RE: Availability of kdb

2000-09-17 Thread Linus Torvalds
On Sun, 17 Sep 2000, Marty Fouts wrote: > > Craftsmanship is in the way you approach what you do, not in the tools you > use to do it. And, frankly, if you wish to artificially limit your use of > tools, all you are doing is hobbling yourself. You know what? Start your own kernel (or split

Re: Availability of kdb

2000-09-17 Thread root
Linus Torvalds wrote: On Sun, 17 Sep 2000, Marty Fouts wrote: Craftsmanship is in the way you approach what you do, not in the tools you use to do it. And, frankly, if you wish to artificially limit your use of tools, all you are doing is hobbling yourself. You know what? Start

Re: Availability of kdb

2000-09-17 Thread Larry McVoy
On Sun, Sep 17, 2000 at 02:33:40PM -0700, Marty Fouts wrote: Um, for what ever it is worth, if you want to compare "power user" carpentry to "hand tools only" you can actually do it fairly easily on PBS in the US. There used to be a program done by a guy who did everything by hand. I loved

RE: Availability of kdb

2000-09-17 Thread Marty Fouts
er Xymoron; Tigran Aivazian; Daniel Phillips; Kernel Mailing List Subject: RE: Availability of kdb On Sun, 17 Sep 2000, Marty Fouts wrote: Craftsmanship is in the way you approach what you do, not in the tools you use to do it. And, frankly, if you wish to artificially limit your use of t

Re: Availability of kdb

2000-09-17 Thread David S. Miller
From: Marty Fouts [EMAIL PROTECTED] Date:Sun, 17 Sep 2000 22:42:22 -0700 I've probably debugged more operating systems under more varied environments than nearly anyone here Which one of them was %100 distributed where no two of the developers were in the same building and

Re: Availability of kdb

2000-09-12 Thread Mike Galbraith
On Tue, 12 Sep 2000, Jeff V. Merkey wrote: > > Ted, > > I am looking at these sources as well. One thing I went back and looked > at was related to a comment from Mike G. I believe regarding drivers > conflicts with int 0x13 requests potentially hosing the IDE driver. In Hmm.. must be a

Re: Availability of kdb

2000-09-12 Thread Jeff V. Merkey
Ted, I am looking at these sources as well. One thing I went back and looked at was related to a comment from Mike G. I believe regarding drivers conflicts with int 0x13 requests potentially hosing the IDE driver. In MANOS, since DOS is resident underneath the OS, I instrumented the code a

Re: Availability of kdb

2000-09-12 Thread Theodore Y. Ts'o
Date: Mon, 11 Sep 2000 17:51:20 -0600 From: "Jeff V. Merkey" <[EMAIL PROTECTED]> I support source level in the kernel. Based on Andi Klein's review, I have grabbed ext2utils and am looking at a minimal int 0x13 interface to load files into memory. hardest problem here for Linux

Re: Availability of kdb

2000-09-12 Thread Theodore Y. Ts'o
On Mon, 11 Sep 2000, Jeff V. Merkey wrote: > > Thanks Ted. I know, but a kernel debugger is one of those nasty pieaces > of software that can quickly get out of sync if it's maintained > separately from the tree -- the speed at which changes occur in Linux > would render it a very difficult

Re: Availability of kdb

2000-09-12 Thread Theodore Y. Ts'o
On Mon, 11 Sep 2000, Jeff V. Merkey wrote: Thanks Ted. I know, but a kernel debugger is one of those nasty pieaces of software that can quickly get out of sync if it's maintained separately from the tree -- the speed at which changes occur in Linux would render it a very difficult project

Re: Availability of kdb

2000-09-12 Thread Theodore Y. Ts'o
Date: Mon, 11 Sep 2000 17:51:20 -0600 From: "Jeff V. Merkey" [EMAIL PROTECTED] I support source level in the kernel. Based on Andi Klein's review, I have grabbed ext2utils and am looking at a minimal int 0x13 interface to load files into memory. hardest problem here for Linux is

Re: Availability of kdb

2000-09-12 Thread Jeff V. Merkey
Ted, I am looking at these sources as well. One thing I went back and looked at was related to a comment from Mike G. I believe regarding drivers conflicts with int 0x13 requests potentially hosing the IDE driver. In MANOS, since DOS is resident underneath the OS, I instrumented the code a

Re: Availability of kdb

2000-09-12 Thread Mike Galbraith
On Tue, 12 Sep 2000, Jeff V. Merkey wrote: Ted, I am looking at these sources as well. One thing I went back and looked at was related to a comment from Mike G. I believe regarding drivers conflicts with int 0x13 requests potentially hosing the IDE driver. In Hmm.. must be a different

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Keith Owens wrote: > > On Mon, 11 Sep 2000 16:19:14 -0600, > "Jeff V. Merkey" <[EMAIL PROTECTED]> wrote: > >Who pays you? > > I used to work on kdb in my own time, for free. Then I joined SGI and > now I get paid to work on it. If I left SGI I would continue to work > on kdb, the original

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
The code is at vger.timpanogas.org. If you want to review it, it's there. We are posting another MANOS kernel with full VM end of the month. The version Darren and I are hacking on now has the debugger broken out as a module as a prelude to put it in Linux. I am working on your kdb stubs in

Re: Availability of kdb

2000-09-11 Thread Keith Owens
On Mon, 11 Sep 2000 16:24:32 -0600, "Jeff V. Merkey" <[EMAIL PROTECTED]> wrote: >Keith, > >If you are volunteering to maintain the MANOS debugger after I hack it >into Linux, then I accept. I'll give you an ftp and telnet account on >vger.timpanogas.org and you can run with it. How on earth

Re: Availability of kdb

2000-09-11 Thread Keith Owens
On Mon, 11 Sep 2000 16:19:14 -0600, "Jeff V. Merkey" <[EMAIL PROTECTED]> wrote: >Who pays you? I used to work on kdb in my own time, for free. Then I joined SGI and now I get paid to work on it. If I left SGI I would continue to work on kdb, the original kdb developer left SGI but still

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Keith, If you are volunteering to maintain the MANOS debugger after I hack it into Linux, then I accept. I'll give you an ftp and telnet account on vger.timpanogas.org and you can run with it. :-) Jeff "Jeff V. Merkey" wrote: > > Who pays you? > > Keith Owens wrote: > > > > On Mon, 11 Sep

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Who pays you? Keith Owens wrote: > > On Mon, 11 Sep 2000 09:46:15 -0600, > "Jeff V. Merkey" <[EMAIL PROTECTED]> wrote: > >Thanks Ted. I know, but a kernel debugger is one of those nasty pieaces > >of software that can quickly get out of sync if it's maintained > >separately from the tree --

Re: Availability of kdb

2000-09-11 Thread Keith Owens
On Mon, 11 Sep 2000 09:46:15 -0600, "Jeff V. Merkey" <[EMAIL PROTECTED]> wrote: >Thanks Ted. I know, but a kernel debugger is one of those nasty pieaces >of software that can quickly get out of sync if it's maintained >separately from the tree -- the speed at which changes occur in Linux >would

Re: Availability of kdb

2000-09-11 Thread Rik van Riel
On Mon, 11 Sep 2000, Jamie Lokier wrote: > Jeff V. Merkey wrote: > > In NetWare, we didn't care if the page was touched or not since we > > used our own bits in field bits 11-9 to store page specific stuff, > > like whether the page was dirty or not. > > Linux does actually look at both bits,

Re: Availability of kdb

2000-09-11 Thread Rik van Riel
On Mon, 11 Sep 2000, Jamie Lokier wrote: > Rik van Riel wrote: > > The main difference between Linux and Netware here is the > > fact that Linux has a real userland, which can touch the > > pages on its own without going through the kernel. > > > > This causes "spontaneously" dirtied or accessed

Re: Availability of kdb

2000-09-11 Thread Jamie Lokier
Rik van Riel wrote: > The main difference between Linux and Netware here is the > fact that Linux has a real userland, which can touch the > pages on its own without going through the kernel. > > This causes "spontaneously" dirtied or accessed pages, > meaning that we really want to use the

Re: Availability of kdb

2000-09-11 Thread Val Henson
One way of increasing signal to noise ratio (place in .procmailrc): :0 * ^FROM.*jmerkey@timpanogas\.com /dev/null On Mon, Sep 11, 2000 at 03:53:48PM -0400, [EMAIL PROTECTED] wrote: > On Mon, 11 Sep 2000, Jeff V. Merkey wrote: > Now will you stop trying to incite pointless riots and allow those

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
[EMAIL PROTECTED] wrote: > Now will you stop trying to incite pointless riots and allow those of us > who are trying to use linux-kernel as a useful means of communicating > development issues a chance for a decent signal to noise ratio? > > -ben Ben, Read the thread before

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
I'll give it some thought. Most of Linux has better paging than NetWare already -- NetWare is pretty simple in this respect. THe process mapping stuff in Netware (PCB's are mapped to recursively point to themselves with a global brach table) is unique, but not as good as what's in Linux. :-)

Re: Availability of kdb

2000-09-11 Thread kernel
On Mon, 11 Sep 2000, Jeff V. Merkey wrote: > If you need to know if the page has been accessed, you can clear this > bit when a page is first mapped, and when someone touches it, the > hardware will set this bit. It set's it by doing a R/M/W operation on We've set the accessed bit for a long

Re: Availability of kdb

2000-09-11 Thread Jamie Lokier
Jeff V. Merkey wrote: > One of the best references that describes the bus transaction model for > Intel in "plain english" is the Pentium Pro Processor System > Architecture Manual by Tom Shanley of Mindshare, Inc., Addison Wesley, > ISBN: 0-201-47953-2. It explains a very good detail how the

Re: Availability of kdb

2000-09-11 Thread Jamie Lokier
Rik van Riel wrote: > > The person writing and updating page table entries in NetWare > > 4.1 was clearing the accessed bit in the PTE and did not know > > that the processor would assert a hidden R/M/W operation and > > assert a bus lock to set this bit everytime someone cleared it > > -- it

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Allright, You've convinced me. I'll do it. It will require consierable support moving forward. :-) Jeff Miles Lane wrote: > > On Mon, 11 Sep 2000, Jeff V. Merkey wrote: > > > > > > > "Theodore Y. Ts'o" wrote: > > > > > > > > If you come up with robust, easy to patch source-code-level

Re: Availability of kdb

2000-09-11 Thread Miles Lane
On Mon, 11 Sep 2000, Jeff V. Merkey wrote: > > > "Theodore Y. Ts'o" wrote: > > > > > If you come up with robust, easy to patch source-code-level debugger for > > Linux, some people will use it, and some people won't. If it's better > > than kdb, eventually it'll displace kdb as the

Re: Availability of kdb

2000-09-11 Thread Gary Lawrence Murphy
> "A" == Alexander Viro <[EMAIL PROTECTED]> writes: A> As for the "greater social good" (or world domination, for that A> matter) - excuse me, but quite a few of us couldn't care A> less. Thanks for the comment, and please don't feel guilty about it, it is a perfectly valid

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Jamie, I referenced a great book an an email to Rik Van Reil. It's got a great explanation of this stuff. :-) Jeff Jamie Lokier wrote: > > Jeff V. Merkey wrote: > > This means it completely unnecessary to assert LOCK# for the unlock > > case, since there are no ordering issues persay -

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Rik, One of the best references that describes the bus transaction model for Intel in "plain english" is the Pentium Pro Processor System Architecture Manual by Tom Shanley of Mindshare, Inc., Addison Wesley, ISBN: 0-201-47953-2. It explains a very good detail how the cache controllers and

Re: Availability of kdb

2000-09-11 Thread Rik van Riel
On Sun, 10 Sep 2000, Jeff V. Merkey wrote: > The person writing and updating page table entries in NetWare > 4.1 was clearing the accessed bit in the PTE and did not know > that the processor would assert a hidden R/M/W operation and > assert a bus lock to set this bit everytime someone cleared

Re: Availability of kdb

2000-09-11 Thread Jamie Lokier
Jeff V. Merkey wrote: > This means it completely unnecessary to assert LOCK# for the unlock > case, since there are no ordering issues persay - the other processors > are spinning on the lock already and cannot get through. Yes I know I left out the context. Doesn't change what I'm about to

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Jamie Lokier wrote: > > Jeff V. Merkey wrote: > > The best info I know of is to get an analyser that plugs into the > > processor socket (like an american arium) and enable branch trace > > messaging to monitor the interaction between the processor and the cache > > controllers. You get info

Re: Availability of kdb

2000-09-11 Thread Jamie Lokier
Lars Marowsky-Bree wrote: > > I still don't see how processor traces will tell me what ordering > > guarantees I can rely on across the range of processors. > > It will tell you when your assumptions were wrong. Indeed. Like testing, but better. -- Jamie - To unsubscribe from this list: send

Re: Availability of kdb

2000-09-11 Thread Lars Marowsky-Bree
On 2000-09-11T18:11:11, Jamie Lokier <[EMAIL PROTECTED]> said: > I still don't see how processor traces will tell me what ordering > guarantees I can rely on across the range of processors. It will tell you when your assumptions were wrong. Sincerely, Lars Marowsky-Brée <[EMAIL

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Jamie, I should have never brought this example up. The thread "spin_unlock() optimization" that went on for three weeks with Intel and the whole planet getting into the fray speaks for itself, and anyone wanting to search the kernel archives can do so and for their own opinion. I won't use a

Re: Availability of kdb

2000-09-11 Thread Martin Dalecki
Gary Lawrence Murphy wrote: > The analogy to typing hex codes or toggling code at the console is > also apt. Unix ascended over Multix in no small part because of C, > which drew sneers from the trad programmer of the day. Personally, I > tend to debug intuitively based on my knowledge of

Re: Availability of kdb

2000-09-11 Thread Mike Porter
> > But in the end, maybe the rule to only use hand power makes sense. Not > > because hand-power is _better_. But because it brings in the kind of > > people who love to work with their hands, who love to _feel_ the wood with > > their fingers, and because of that their holes are not always

Re: Availability of kdb

2000-09-11 Thread Alexander Viro
On 11 Sep 2000, Gary Lawrence Murphy wrote: > > "H" == Horst von Brand <[EMAIL PROTECTED]> writes: > > H> In the end, this is Linus' game. If you want to play, you'll > H> have to pay the admission price he sets. > > Is it fair to ask about the purpose of Linux? > > The

Re: Availability of kdb

2000-09-11 Thread Gary Lawrence Murphy
> "H" == Horst von Brand <[EMAIL PROTECTED]> writes: H> In the end, this is Linus' game. If you want to play, you'll H> have to pay the admission price he sets. Is it fair to ask about the purpose of Linux? The purpose I most often hear talks about world domination and about

Re: Availability of kdb

2000-09-11 Thread Jamie Lokier
Jeff V. Merkey wrote: > To cite a Linux specific example, let's take the issue with the memory > write for a spin_unlock(). Linus seemed to have trouble grasping why > a simple ' mov , 0' would work as opposed to a 'lock dec > ' No logic analyser will tell you the subtleties of _why_ it works.

Re: Availability of kdb

2000-09-11 Thread Marco Colombo
On Wed, 6 Sep 2000, Linus Torvalds wrote: > > > On Wed, 6 Sep 2000, Marco Colombo wrote: > > > > As you said, the are two kinds of reactions. I don't understand why you > > think that the presence of a debugger will *prevent* people from doing > > the Right Thing and "think about problems

Re: Availability of kdb

2000-09-11 Thread Henning P. Schmiedehausen
[EMAIL PROTECTED] (Jeff V. Merkey) writes: [ Jeff V. Merkey, super man ] Huh. Once again, none of your facts is straight or correct: >Famous double YY's of history: >Good: [...] >Albert Einstein --- cut --- http://www.aip.org/history/einstein/einbrain.htm Was Einstein's Brain Different?

Re: Availability of kdb

2000-09-11 Thread Henning P. Schmiedehausen
[EMAIL PROTECTED] (Jeff V. Merkey) writes: >They are bad because they cost people money that could be spent more >productively in other areas due to the lengthening of the development You still miss the point. Most kernel developers don't give a damn about money. If you're in kernel

Re: Availability of kdb

2000-09-11 Thread Marco Colombo
On Sun, 10 Sep 2000, Jeff V. Merkey wrote: > Since Linus has rejected kdb there's every indication he will reject any other > kernel debugger submissions -- also his right. I think my time would be better > spent completing the merge of the Linux code base onto MANOS since moving the > debugger

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
"Jeff V. Merkey" wrote: > "David S. Miller" wrote: > > >Date:Sun, 10 Sep 2000 18:14:03 -0600 > >From: "Jeff V. Merkey" <[EMAIL PROTECTED]> > > > >Linus' apparently did not understand this, or he would have > >immediately realized that double locking was always generating

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
"David S. Miller" wrote: >Date:Sun, 10 Sep 2000 18:14:03 -0600 >From: "Jeff V. Merkey" <[EMAIL PROTECTED]> > >Linus' apparently did not understand this, or he would have >immediately realized that double locking was always generating a >second non-cacheable memory

Re: Availability of kdb

2000-09-11 Thread Marco Colombo
On Sun, 10 Sep 2000, Jeff V. Merkey wrote: Since Linus has rejected kdb there's every indication he will reject any other kernel debugger submissions -- also his right. I think my time would be better spent completing the merge of the Linux code base onto MANOS since moving the debugger

Re: Availability of kdb

2000-09-11 Thread Marco Colombo
On Wed, 6 Sep 2000, Linus Torvalds wrote: On Wed, 6 Sep 2000, Marco Colombo wrote: As you said, the are two kinds of reactions. I don't understand why you think that the presence of a debugger will *prevent* people from doing the Right Thing and "think about problems another way".

Re: Availability of kdb

2000-09-11 Thread Gary Lawrence Murphy
"H" == Horst von Brand [EMAIL PROTECTED] writes: H In the end, this is Linus' game. If you want to play, you'll H have to pay the admission price he sets. Is it fair to ask about the purpose of Linux? The purpose I most often hear talks about world domination and about having the

Re: Availability of kdb

2000-09-11 Thread Alexander Viro
On 11 Sep 2000, Gary Lawrence Murphy wrote: "H" == Horst von Brand [EMAIL PROTECTED] writes: H In the end, this is Linus' game. If you want to play, you'll H have to pay the admission price he sets. Is it fair to ask about the purpose of Linux? The purpose I most often

Re: Availability of kdb

2000-09-11 Thread Mike Porter
But in the end, maybe the rule to only use hand power makes sense. Not because hand-power is _better_. But because it brings in the kind of people who love to work with their hands, who love to _feel_ the wood with their fingers, and because of that their holes are not always perfectly

Re: Availability of kdb

2000-09-11 Thread Martin Dalecki
Gary Lawrence Murphy wrote: The analogy to typing hex codes or toggling code at the console is also apt. Unix ascended over Multix in no small part because of C, which drew sneers from the trad programmer of the day. Personally, I tend to debug intuitively based on my knowledge of code,

Re: Availability of kdb

2000-09-11 Thread Lars Marowsky-Bree
On 2000-09-11T18:11:11, Jamie Lokier [EMAIL PROTECTED] said: I still don't see how processor traces will tell me what ordering guarantees I can rely on across the range of processors. It will tell you when your assumptions were wrong. Sincerely, Lars Marowsky-Brée [EMAIL PROTECTED]

Re: Availability of kdb

2000-09-11 Thread Jamie Lokier
Lars Marowsky-Bree wrote: I still don't see how processor traces will tell me what ordering guarantees I can rely on across the range of processors. It will tell you when your assumptions were wrong. Indeed. Like testing, but better. -- Jamie - To unsubscribe from this list: send the

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Jamie Lokier wrote: Jeff V. Merkey wrote: The best info I know of is to get an analyser that plugs into the processor socket (like an american arium) and enable branch trace messaging to monitor the interaction between the processor and the cache controllers. You get info that's

Re: Availability of kdb

2000-09-11 Thread Jamie Lokier
Jeff V. Merkey wrote: This means it completely unnecessary to assert LOCK# for the unlock case, since there are no ordering issues persay - the other processors are spinning on the lock already and cannot get through. Yes I know I left out the context. Doesn't change what I'm about to say.

Re: Availability of kdb

2000-09-11 Thread Rik van Riel
On Sun, 10 Sep 2000, Jeff V. Merkey wrote: The person writing and updating page table entries in NetWare 4.1 was clearing the accessed bit in the PTE and did not know that the processor would assert a hidden R/M/W operation and assert a bus lock to set this bit everytime someone cleared it

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Rik, One of the best references that describes the bus transaction model for Intel in "plain english" is the Pentium Pro Processor System Architecture Manual by Tom Shanley of Mindshare, Inc., Addison Wesley, ISBN: 0-201-47953-2. It explains a very good detail how the cache controllers and

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
Jamie, I referenced a great book an an email to Rik Van Reil. It's got a great explanation of this stuff. :-) Jeff Jamie Lokier wrote: Jeff V. Merkey wrote: This means it completely unnecessary to assert LOCK# for the unlock case, since there are no ordering issues persay - the

Re: Availability of kdb

2000-09-11 Thread Gary Lawrence Murphy
"A" == Alexander Viro [EMAIL PROTECTED] writes: A As for the "greater social good" (or world domination, for that A matter) - excuse me, but quite a few of us couldn't care A less. Thanks for the comment, and please don't feel guilty about it, it is a perfectly valid reason for

Re: Availability of kdb

2000-09-11 Thread Miles Lane
On Mon, 11 Sep 2000, Jeff V. Merkey wrote: "Theodore Y. Ts'o" wrote: If you come up with robust, easy to patch source-code-level debugger for Linux, some people will use it, and some people won't. If it's better than kdb, eventually it'll displace kdb as the external kernel

Re: Availability of kdb

2000-09-11 Thread Jeff V. Merkey
[EMAIL PROTECTED] wrote: Now will you stop trying to incite pointless riots and allow those of us who are trying to use linux-kernel as a useful means of communicating development issues a chance for a decent signal to noise ratio? -ben Ben, Read the thread before

Re: Availability of kdb

2000-09-11 Thread Val Henson
One way of increasing signal to noise ratio (place in .procmailrc): :0 * ^FROM.*jmerkey@timpanogas\.com /dev/null On Mon, Sep 11, 2000 at 03:53:48PM -0400, [EMAIL PROTECTED] wrote: On Mon, 11 Sep 2000, Jeff V. Merkey wrote: snip Now will you stop trying to incite pointless riots and allow

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