Hi All,
I have lot of work to do, so of course I had to procrastinate and translate
this! If it's wrong, then "jota" can blame himself for posting in a foreign
language. Maybe it will help someone.
Joanne
Translation -
I had this problem, too.
Note that the comparison is made with Linux 2.2 (Sun JVM
The sun virtual machine _is_ slow.
Another thing to keep in mind is that there was a big change in the linux
kernel since version 2.4.7, if I remember correctly. The change was in
virtual memory management (VMM)
In regards to the version, it's necessary to clear up a few things (I found
out [about this] recently)
There is a stable verison of the kernel that is headed by Linus Torvalds, it
is the one that can be downloaded from www.kernel.org. On the other hand,
there are patches to the kernel that are available but which have not been
added to the Linus's branch because he has not approved them.
The distributions (RedHat, SuSE, etc) come with a kernel that is different
than that on the official branch, they incorporate the patches that they
think are worthwhile. Por example, RH7.2 comes with kernel 2.4.7, with
support for EXT3 and con the old VMM, while the official (Linus) version
2.4.7 does not have support for ext3, but _does_ have the new VMM.
The issue of the VMM resulted in a big argument and Alan Cox (Redhat's
Kernel Guru) made his own branch in which he incorporated many more kernel
patches, but which still had the classic VMM.
At my "work station" with the original distribution + the applications that
I was running, it was running under strain, suddenly you could see a lot of
swapping. Aferwards, after updating some libraries and changing the kernel
to the official 2.4.17 everything worked a lot better, on the same
equiptment. . . afterwords they upgraded me to 256 MB of RAM and now the
difference isn't as noticeable.
This thing about the new VMM is more or less recent ( 3 or 4 months ago)
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Friday, February 08, 2002 9:44 AM
To: Orion-Interest
Subject: Re: Orion+Linux under heavy load
José:
I-ve found another mail about the subject.
Sorry for the rest because this one is in spanish.
--->
Tengo tambien esto
Notese que se hace la comparacion con Linux 2.2(Sun JVM
La maquina virtual de sun _es_ lenta.
Otra cosa a tomar en cuenta es que se hizo un cambio bastante fuerte en el
kernel de linux a partir de la version 2.4.7 si no mal recuerdo. El
cambio fue en el manejo de la memoria virtual (VMM)
Sobre la version, hay que aclarar algunas cosas (yo me enteré no hace
mucho)
Hay una version estable del kernel que es liderada por Linus Torvalds, es
la que se baja de www.kernel.org. Por otra parte hay parches al kernel
que estan disponibles pero no han pasado a la rama de Linus porque él no
los ha aprobado.
Las distribuciones (RedHat, SuSE, etc) vienen con un kernel distinto a la
rama oficial, ellos incorporan los parches que estimen convenientes. Por
ejemplo RH7.2 viene con kernel 2.4.7, con soporte de EXT3 y con el antiguo
VMM, mientras que el oficial (Linus) version 2.4.7 no tiene soporte para
ext3, pero si cuenta con la nueva VMM.
Con el asunto de la VMM se produjo una gran discusion y Alan Cox (Kernerl
Guru de RedHat) creo su propia rama en donde incorporaba muchos mas
parches del kernel, pero con la VMM clasica.
En mi "estacion de trabajo" con la distribucion original + las
aplicaciones que tenia andando le costaba andar, de repente se notaba
harto swap. Despues con las actualizaciones de algunas librerias, y el
cambio del kernel al oficial 2.4.17 funcionaba muchisimo mejor todo, en el
mismo equipos... despues me subieron a 256MB en RAM y ya no se nota tanto
la diferencia.
Esto de la nueva VMM es mas o menos reciente (unos 3 o 4 meses atras)
--
Franco Catrin L. <[EMAIL PROTECTED]>
http://www2.netexplora.cl/ancelot
http://defx.sourceforge.net
ICQ#:30449379
- Original Message -
From: "josete" <[EMAIL PROTECTED]>
To: "Orion-Interest" <[EMAIL PROTECTED]>
Sent: Thursday, February 07, 2002 4:58 PM
Subject: Re: Orion+Linux under heavy load
> Wich problem do you say they've fixed? threads under linux? i've done some
> tests with a redhat 6.2.(sorry i can't remember exactly the kernel
version)
> and jboss, and only at start time it was about three times slower than the
> same jboss in a windows 2000.
> If with the new kernel versions it runs more efficiently, it would be
great
> because i'm a linux fan that has been forced to use windows by this
> problem... XD
>
> - Original Message -
> From: "Jorge Jimenez C" <[EMAIL PROTECTED]>
> To: "Orion-Interest" <[EMAIL PROTECTED]>
> Sent: Thursday, February 07, 2002 3:29 PM
> Subject: Re: Orion+Linux under heavy load
>
>
> > Don't worry. That problem is already fixed in the latest linux kernel
> > releases. I don't remember exactly release number but you can easily
find
> > it. I've made some tests with JBoss and i
