From: Duzgun GUL (duzgung@rt.net.tr)
Date: Fri 13 Oct 2000 - 13:17:49 EEST
On Fri, 13 Oct 2000, Andreas Mueller wrote:
> On Thu, Oct 12, 2000 at 05:32:29PM +0300, Duzgun GUL wrote:
> >
> >
> > Bunlar denenip de yazilmis seyler mi yoksa bir yerden gordum de yazayim
> > tarzinda olan saptamalar mi ?
> >
>
> practise ( i setuped 3 German Universities ) & theory ( University
> for Computer Science, part Operating Systems ) & many years experience :)
>
eh o zaman ya size ogretilende sorun var ya da benim gozumle gorup, elimle
yaptigim islemlerde sorun var ? hangisine inanacagim ??
> >
> > On Thu, 12 Oct 2000, Andreas Mueller wrote:
> >
> > > On Thu, Oct 12, 2000 at 02:42:19PM +0300, Gorkem Cetin wrote:
> > >
> > > * with Linux or PC's it's not possible to handele more than 20.000
> > > Users.
> >
> > sebep ???
> >
>
> TCP/IP of Linux is the worst Part of Linux, at University you'll be
> teached also about Mircosystems/Systemarchitectures. Companies like
> IBM / SCO / SUN developed a long time their "UNIX". I'll not say Linux
> is bad, for Middle-Companies, or Highend-Server, Linux is not good
> enought. Linux has, as i said, generell problems with Filehandling,
> Sockets. You can use Linux for small ISP's with less than 5.000 Users
iyi bir makine uzerinde calistirir adam gibi konfigure edersen cok rahat
20000 kullaniciya hizmet edersin.
>
> > > * Metu has about 20.000 Users 2 paralell Computers, 3 Mailserver
> > > the system running on AIX 4, based on a RISC - System, 3 RISC Server
> > > share the Jobs, only "orca" has 4GB RAM, and 100 GIG SCSI
> >
> > Su anda calismis oldugum sirketin eski mail serveri ( 25 bin kullanici )
> >
> > Sun U10 300 Mhz Sparc - 512 GB RAM - 8.GB x 3 SCSI HD , Metu kaynaklarini
> > boyle hoyratca kullaniyorsa bu METU'nun sorunu..
> >
>
> 512 GB RAM ? it's not possibible with a U10 :) A U10 is U5 familar
> with max. 1GB RAM, the benchmark is about 22.
512 MB olacakti, typo
>
> made some time ago tests with the U10, at least as ~500 Users
> connected she got big trouble, i'll not believe you have 25.000 Users
root:/var/adm#prtconf
System Configuration: Sun Microsystems sun4u
Memory size: 576 Megabytes
System Peripherals (Software Nodes):
SUNW,Ultra-5_10
root:/var/adm#cat /etc/passwd | wc -l
29081
ayni makine uzerinde AAA ve DNS de calismakta idi..
> It's possible if send extremly less email, you running no sql-server
> or ftp-server at this maschine. Just account for yourself,
>
> service ( login ) in kb * childprozess ( users ) lets say 1000Users =
> 200MB
> service ( ftp ) in kb * childprozess ( users ) lets say 500Users =
> 125MB
> service ( web ) in kb * childprozess ( users ) let say 100Users =
> 200MB
>
> just with "3 services" which run at the maschine your're out of RAM
> i'll not point the the busspeed at this moment. Physically impossible
> you run 25.000 User at the maschine.
anlatilan derslerde hala sorun var gibi gorunuyor ..
>
> > > * using NFS3,4 slows down the hole System, generally NFS is slowly
> >
> > Disk Array kullanilabilir..
> >
>
> if you transfer from a "nativ" Ethernetcard Datas you're faster, than
> sucking NFS, try fror youself, transfer a File with 5GB with
> Ethernet and NFS
>
> > > * zmailer+patch is a very nice mailer for this job.
> > > * mysql is nice if you work with < 10 Users, Postgresql is nice for
> > > middle Systems it rocks until 100Users, for big Systems orcacle, is a
> > > must.
> >
>
> .. forgot postfix, btw. the most busy Internetside, ftp.cdrom.com (
> ftp.download.com ) running with FreeBSD.
>
> > Su anki kurmus oldugum sistemde ise
> >
> > mysql> select count(*) from rt_net_tr;
> > +----------+
> > | count(*) |
> > +----------+
> > | 37929 |
> > +----------+
> > 1 row in set (0.02 sec)
> >
> >
> > kullanici mevcut ? Sorun yok, cikacak gibi de gorunmuyor..
> >
>
> You forget the most importent factor, how many user use the
> System/Services at the same time ?
>
> Andreas Mueller
> Debian TR
Bandwidth'e ve zamana gore degisen seyler bunlar..
-duzgun
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