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  #1  
Old 1st June 2006, 04:07 AM
eltoky Offline
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Question Help with very slow system under FC5

I just make a new installation of Fedora FC5 x86_64 and my system is very slow. Here are the main problems:
- udev failed at startup on some interfaces
- boot of the system is very slow (it takes around 30s to 2 mns between each stage of the boot process -> between each OK)
- Gnome is too much slow: take more than 5 mns to boot and then slow response and slow apps

My specs are:
- P930D + 4Mb of memory, SLI motherboard, 2xFx7600 GT, 300 Gb SATA disk

I have updated drivers for video card (through livna) and also update the kernel and all drivers.

When i want to install a new drivers or anything, it takes hours.... Even the regular install was very very slow: more than 5 hours to install it.

Do you have any hints that can help me to solve this issue?

(btw, the system is working perfectly under windows...)

Last edited by eltoky; 1st June 2006 at 09:55 AM.
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  #2  
Old 1st June 2006, 05:58 PM
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Processor type?

X86_64 targets AMD64 processors... Unless you have one, you should install the i386 version.

J
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  #3  
Old 3rd June 2006, 09:46 AM
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I thought it should work also for Pentium 64bits processors. Which release should i install for Pentium dual core one then?
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  #4  
Old 3rd June 2006, 12:15 PM
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It should work for Intel 64-bit processors like Xeon and Itanium. But AFAIK, the Pentium Dual Core processors are still 32-bit.

When in doubt, install the i386 version.

Jason
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  #5  
Old 3rd June 2006, 06:47 PM
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But on fedora install docs, they say: 86_64 is for 64-bit AMD processors such as Athlon64, Turion64, Opteron; and Intel 64-bit processors such as EM64T

and pentium dual core 930D is EM64T from my understanding
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  #6  
Old 3rd June 2006, 07:26 PM
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Judging from the Intel.com website - the dual core processors are 32-bit.
http://www.intel.com/design/mobile/c...umentation.htm

Note how the technical documentation covers the IA_32 architecture, not IA_64. And really, when you think about what the name "Dual Core" implies - two Pentium cores, it really looks like 32-bit is the final answer.

Jason
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  #7  
Old 3rd June 2006, 08:50 PM
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Quote:
Originally Posted by jtang613
It should work for Intel 64-bit processors like Xeon and Itanium. But AFAIK, the Pentium Dual Core processors are still 32-bit.

When in doubt, install the i386 version.

Jason
I don't think the x86-64 fedora will run on Itanium.
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  #8  
Old 3rd June 2006, 08:56 PM
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Quote:
Originally Posted by jtang613
Judging from the Intel.com website - the dual core processors are 32-bit.
http://www.intel.com/design/mobile/c...umentation.htm

Note how the technical documentation covers the IA_32 architecture, not IA_64. And really, when you think about what the name "Dual Core" implies - two Pentium cores, it really looks like 32-bit is the final answer.

Jason
That link is to "Core Duo", that's not what he has, he has a Pentium 930D presler
which is 64bit enabled.

http://www.intel.com/cd/products/ser...m_d/216403.htm

Mark

Last edited by marko; 3rd June 2006 at 09:01 PM. Reason: add link to intel info
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  #9  
Old 3rd June 2006, 09:16 PM
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Quote:
Originally Posted by marko
That link is to "Core Duo", that's not what he has, he has a Pentium 930D presler
which is 64bit enabled.

http://www.intel.com/cd/products/ser...m_d/216403.htm

Mark
Yep, you might be right about that.
http://www.intel.com/cd/channel/rese...ture/index.htm
(leave it to Intel to produce a million different versions of the same architecture just to confuse me )

Regardless... If he can't get the x86_64 Fedora to work, I will repeat my original recommendation: Try the i386 version.

J
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  #10  
Old 4th June 2006, 02:27 AM
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I will try today to install the 32 bits release of Fedora 5 and see how it performs then.
It may be that i have to wait in order to get a stable release for my proc...
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  #11  
Old 4th June 2006, 11:58 AM
eltoky Offline
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I installed the 32 bits release of Fedora5, and i still face the same issue with a very slow system.
However that time, the install was very fast and all GUI very responsive, but after booting the computer then it starts again to be very slow...

Do you have any hints?
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  #12  
Old 4th June 2006, 01:32 PM
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Just a side note: I think I was checking something off the rescue CD (64bit) on my laptop (32 bit) one day and booted off of it. It did a check and said that I didn't have a 64 bit processor.
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  #13  
Old 4th June 2006, 06:45 PM
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eltoky

Run in a terminal window the command dmesg
and look for suspicious warning messages.
Also look in /var/log/messages (might need to be root user for
that due to the file permissions). Most of the messages
are informative but some flag problems. I'd especially
look for things that time out.

also run this command:

uname -a

does the resulting string have "SMP" in it? You installed the i386 kernel
but I want to be sure it was the i386 SMP kernel since it's a 930D chip.
Of course even the plain uni-processor kernel would be fast on your
machine

The only other thing I see that's odd about your system is the
very large amount of ram, you wrote "4Mbit" but I'm sure you
really meant 4GB since it's impossible to put 4Mbit of ram in
a modern PC. There are some negative effects that happen
with linux at very high ram amounts when you use the default
precompiled kernel. You can reduce those by compiling your
own kernel and when you are doing the make xconfig step
set the flags like this:

NOHIGHMEM 4G
HIGHMEM4G true/selected

then compile the kernel

reference:
http://www.linux-m32r.org/lxr/http/s...h/i386/Kconfig

As an aside, this is one of the advantages of using the AMD64 EMT64
extensions kernels, you don't have to even think about this ram stuff,
it's just plain flat model no matter what amount you have (well,
that's effectively true, the limit is so high you'd never install that much)

I don't like compiling my own, I tend to forget or not know about
some setting and then something breaks. (last time I broke automounting)

If you want to diagnose if the memory size is an issue, you can
just fool linux into thinking there's only 1GB of ram, reboot, and
see if it's faster. Become root and put in the /boot/grub/grub.conf
file for the kernel you use:

mem=1G

Like in my case it would look like:

default=0
timeout=10
title Fedora Core (2.6.16-1.2122_FC5smp)
root (hd0,0)
kernel /vmlinuz-2.6.16-1.2122_FC5smp mem=1G ro root=LABEL=/
initrd /initrd-2.6.16-1.2122_FC5smp.img

save that and reboot and run with that kernel and see if it's
faster. Make sure you remember to remove the "mem=1G" later
after the test.

Other than this I don't get what's wrong, even if it's a memory issue
that kernel buffering is usually pretty small effect, you'd noticed it
if you were doing something ram heavy like Oracle but I doubt
a home user would notice.

Mark

Last edited by marko; 4th June 2006 at 06:48 PM.
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  #14  
Old 20th June 2006, 02:19 PM
eltoky Offline
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Sorry for the delay, I was outside my city for business purpose. I checked with the memory, and it's running fine if I put mem=1Gb but very slow if I do not put it. I think it is then related to some support of my 4Gb with default linux kernel.

I have few questions:
- do you think i should compile if for support of highmem?
- do you think this problem is same for 64bits support (my processor is really 64bits indeed)?

Regards,

Frank
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  #15  
Old 21st June 2006, 01:07 AM
eltoky Offline
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Just to add a few note. By limiting the memory, i also do not experienced problem with udev at boot time !
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