freebsd-hackers Digest, Vol 130, Issue 5

Lin, Shih-Min sl151 at waikato.ac.nz
Fri Sep 16 14:30:05 PDT 2005 




-----Original Message-----
From: owner-freebsd-hackers at freebsd.org on behalf of freebsd-hackers-request at freebsd.org
Sent: Sat 9/17/2005 12:00 AM
To: freebsd-hackers at freebsd.org
Subject: freebsd-hackers Digest, Vol 130, Issue 5
 
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Today's Topics:

   1. IO schedulers in FBSD... (Pranav Peshwe)
   2. Re: IO schedulers in FBSD... (Luigi Rizzo)
   3. Re: IO schedulers in FBSD... (Pranav Peshwe)
   4. Re: IO schedulers in FBSD... (Luigi Rizzo)
   5. Re: {get,set}_fsbase, {get,set}_gsbase and Valgrind (John Baldwin)
   6. ELF binary type "0" not known. (Wouter van Rooij)


----------------------------------------------------------------------

Message: 1
Date: Thu, 15 Sep 2005 18:45:27 +0530
From: "Pranav Peshwe" <pranavpeshwe at gmail.com>
Subject: IO schedulers in FBSD...
To: <freebsd-hackers at FreeBSD.org>
Message-ID: <00bd01c5b9f7$8f629370$0201a8c0 at pranav>
Content-Type: text/plain;	charset="iso-8859-1"

Hello,
        Which is the I/O scheduler used by FBSD 5.4 ? 
I googled in various ways but could not get an answer.
I do not have access to the source code.

TIA.

Sincere regards,
Pranav.J.Peshwe

---------------------------------------------------------------------------
A picture is worth a thousand words.
A formula is worth a thousand pictures.
- Edsger W. Dijkstra


------------------------------

Message: 2
Date: Thu, 15 Sep 2005 06:01:32 -0700
From: Luigi Rizzo <rizzo at icir.org>
Subject: Re: IO schedulers in FBSD...
To: Pranav Peshwe <pranavpeshwe at gmail.com>
Cc: freebsd-hackers at freebsd.org
Message-ID: <20050915060132.A64948 at xorpc.icir.org>
Content-Type: text/plain; charset=us-ascii

On Thu, Sep 15, 2005 at 06:45:27PM +0530, Pranav Peshwe wrote:
> Hello,
>         Which is the I/O scheduler used by FBSD 5.4 ? 
> I googled in various ways but could not get an answer.

it is called FCFSUSIIABPIWCTTOIS, which stands for
First Come First Serve Unless Someone Is In A Better Position
In Which Case The Temporal Order Is Subverted

also known as the standard one-way elevator taught in all operating
system courses.

> I do not have access to the source code.

you do, it is at
	
	http://www.freebsd.org/cgi/cvsweb.cgi/

ready for your perusal.

cheers
luigi

> TIA.
> 
> Sincere regards,
> Pranav.J.Peshwe
> 
> ---------------------------------------------------------------------------
> A picture is worth a thousand words.
> A formula is worth a thousand pictures.
> - Edsger W. Dijkstra
> _______________________________________________
> freebsd-hackers at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers
> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe at freebsd.org"


------------------------------

Message: 3
Date: Thu, 15 Sep 2005 19:52:15 +0530
From: "Pranav Peshwe" <pranavpeshwe at gmail.com>
Subject: Re: IO schedulers in FBSD...
To: "Luigi Rizzo" <rizzo at icir.org>,	<freebsd-hackers at freebsd.org>
Message-ID: <000801c5ba04$b82efd90$0201a8c0 at pranav>
Content-Type: text/plain;	charset="iso-8859-1"


----- Original Message -----
From: "Luigi Rizzo" <rizzo at icir.org>
To: "Pranav Peshwe" <pranavpeshwe at gmail.com>
Cc: <freebsd-hackers at freebsd.org>
Sent: Thursday, September 15, 2005 6:31 PM
Subject: Re: IO schedulers in FBSD...


> On Thu, Sep 15, 2005 at 06:45:27PM +0530, Pranav Peshwe wrote:
> > Hello,
> >         Which is the I/O scheduler used by FBSD 5.4 ?
> > I googled in various ways but could not get an answer.
>
> it is called FCFSUSIIABPIWCTTOIS, which stands for
> First Come First Serve Unless Someone Is In A Better Position
> In Which Case The Temporal Order Is Subverted
>
> also known as the standard one-way elevator taught in all operating
> system courses.
>
> > I do not have access to the source code.
>
> you do, it is at
>
> http://www.freebsd.org/cgi/cvsweb.cgi/
>
> ready for your perusal.
>
> cheers
> luigi


Thank you very much for the name and the source
link.Is there any documentation available on this
topic(fbsd io schedulers) ?
Where is the io scheduler located in the
src code tree ?
--
I found one more source for browsing the sources.
http://fxr.watson.org/
--

TIA.

Sincere regards,
Pranav

---------------------------------------------------------------------------
When I die, I want to die like my friend's grandmother, who died peacefully
in her sleep. Not screaming like all the passengers in her car.



------------------------------

Message: 4
Date: Thu, 15 Sep 2005 07:39:27 -0700
From: Luigi Rizzo <rizzo at icir.org>
Subject: Re: IO schedulers in FBSD...
To: Pranav Peshwe <pranavpeshwe at gmail.com>
Cc: freebsd-hackers at freebsd.org
Message-ID: <20050915073927.A65819 at xorpc.icir.org>
Content-Type: text/plain; charset=us-ascii

On Thu, Sep 15, 2005 at 07:52:15PM +0530, Pranav Peshwe wrote:
...
> Thank you very much for the name and the source
> link.Is there any documentation available on this
> topic(fbsd io schedulers) ?
> Where is the io scheduler located in the
> src code tree ?

see http://wikitest.freebsd.org/moin.cgi/Hybrid there is more docs on this

cheers
luigi


------------------------------

Message: 5
Date: Thu, 15 Sep 2005 11:37:31 -0400
From: John Baldwin <jhb at FreeBSD.org>
Subject: Re: {get,set}_fsbase, {get,set}_gsbase and Valgrind
To: freebsd-hackers at freebsd.org
Cc: Simon Barner <barner at freebsd.org>
Message-ID: <200509151137.32110.jhb at FreeBSD.org>
Content-Type: text/plain;  charset="iso-8859-6"

On Thursday 15 September 2005 06:48 am, Simon Barner wrote:
> Doug,
> hackers,
>
> a user of the valgrind port reported that it crashed due to an unhandled
> sysarch call (ports/86007).
>
> I found out, that this was because of the get_fsbase, set_fsbase,
> get_gsbase and set_gsbase calls, which were introduced in FreeBSD 6.
>
> I'd be happy if somebody could review my attached patch. It's quite
> possible that it does not make sense at all since I created it by
> adopting the code for the other cases without having a real clue about
> what I was doing :-/
>
> Also, since I could not find any documentation for these calls, it would
> be very nice to know what they are good for, and if programs like
> valgrind have to take special care of them.
>
> Best regards,
>  Simon

Your best bet is probably to mail the patch in a followup to the PR so that it 
doesn't get lost.

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org


------------------------------

Message: 6
Date: Fri, 16 Sep 2005 11:56:09 +0000
From: Wouter van Rooij <aentgood at gmail.com>
Subject: ELF binary type "0" not known.
To: freebsd-hackers at freebsd.org
Message-ID: <7603e5d805091604561e83e2f2 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

I have this error message when i'm wanting to start mozilla for example. Do 
some of you know whats wrong and what I can do to get it working again?

Wouter van Rooij


------------------------------

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