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Old 10-06-2010, 02:33 PM
Charlie Kravetz
 
Default Fw: Installation issues in school lab.

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Hash: SHA1

An almost happy school teacher! Do we know what causes that initial
boot slowdown?

Begin forwarded message:

Date: Wed, 06 Oct 2010 17:14:01 +0300
From: Prekates Alexandros <aprekates@gmail.com>
To: xubuntu-users <xubuntu-users@lists.ubuntu.com>
Subject: [xubuntu-users] Installation issues in school lab.


Hello to the list.


I'm teacher and i've installed Xubuntu10.04 in two school labs .
1) 9 PCs : 256MB ,P4 adsl internet connection
2) 8 PCs : 756MB, P4 ,isdn internet connection

Overall i managed to have a usable lab with software suitable for my
students, and almost all hardware recognized (web camera,scanner,sound).
So a great thanks to foss community and xubuntu.

In the spirit of futher advance i want to share the tho major issues i
encountered:
a) in the isdn lab the installer was taking much much time possible
getting updates? , and i had to unplug network cable to have a cd-only
installation (with the intention to put apt-cache in the server)

b) in both labs the first time i booted ,almost in all PCs, the system
was extremely slow and according to system monitor more than 90% of ram
was in use! Strangely i'could find a process to justify that so i guess
the kernel must be responisible,but how ?
In the second reboot ram utilization dropped to normal levels of 120MB
most and system was usable again.


Thanks.
Alexander.


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Charlie Kravetz
Linux Registered User Number 425914 [http://counter.li.org/]
Never let anyone steal your DREAM. [http://keepingdreams.com]
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Old 10-06-2010, 02:53 PM
"Jonathan Carter (highvoltage)"
 
Default Fw: Installation issues in school lab.

Hi Charlie

I guess updates over the ISDN line was much slower since ISDN is, well,
typically slower then DSL

The first boot was probably slower because it was doing readahead profiling?

-Jonathan

On 06/10/2010 10:33, Charlie Kravetz wrote:
> An almost happy school teacher! Do we know what causes that initial
> boot slowdown?
>
> Begin forwarded message:
>
> Date: Wed, 06 Oct 2010 17:14:01 +0300
> From: Prekates Alexandros <aprekates@gmail.com>
> To: xubuntu-users <xubuntu-users@lists.ubuntu.com>
> Subject: [xubuntu-users] Installation issues in school lab.
>
>
> Hello to the list.
>
>
> I'm teacher and i've installed Xubuntu10.04 in two school labs .
> 1) 9 PCs : 256MB ,P4 adsl internet connection
> 2) 8 PCs : 756MB, P4 ,isdn internet connection
>
> Overall i managed to have a usable lab with software suitable for my
> students, and almost all hardware recognized (web camera,scanner,sound).
> So a great thanks to foss community and xubuntu.
>
> In the spirit of futher advance i want to share the tho major issues i
> encountered:
> a) in the isdn lab the installer was taking much much time possible
> getting updates? , and i had to unplug network cable to have a cd-only
> installation (with the intention to put apt-cache in the server)
>
> b) in both labs the first time i booted ,almost in all PCs, the system
> was extremely slow and according to system monitor more than 90% of ram
> was in use! Strangely i'could find a process to justify that so i guess
> the kernel must be responisible,but how ?
> In the second reboot ram utilization dropped to normal levels of 120MB
> most and system was usable again.
>
>
> Thanks.
> Alexander.
>
>
-- xubuntu-devel mailing list xubuntu-devel@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/xubuntu-devel

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Old 10-06-2010, 09:04 PM
Kari Aliranta
 
Default Fw: Installation issues in school lab.

06.10.2010 17:53, Jonathan Carter (highvoltage) kirjoitti:
>
> The first boot was probably slower because it was doing readahead profiling?
>

See
https://bugs.launchpad.net/ubuntu/+source/ureadahead/+bug/501715
- but this should be fixed already.

Kari

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Old 10-08-2010, 02:15 PM
Kari Aliranta
 
Default Fw: Installation issues in school lab.

06.10.2010 17:53, Jonathan Carter (highvoltage) kirjoitti:
>
> The first boot was probably slower because it was doing readahead profiling?
>

See possibly
https://bugs.launchpad.net/ubuntu/+source/ureadahead/+bug/501715
- which should be fixed already.

Kari

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