Hi John, and Connie Thanks for you answers. I Have been trying to set SL-5.3 x8_64 in an Asus F3jr The devices are these : [root@iskandhar ~]# lspci 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) 00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port (rev 03) 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02) 00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02) 01:00.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon X2300 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01) 03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) 06:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller 06:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 19) 06:01.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 01) 06:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 0a) The results of hdparm are those... [root@iskandhar ~]# hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 104 MB in 3.04 seconds = 34.21 MB/sec [root@iskandhar ~]# hdparm -T /dev/sda /dev/sda: Timing cached reads: 3452 MB in 2.00 seconds = 1727.37 MB/sec [root@iskandhar ~]# Trying in an install that i made ( everything the same, except crypto ) in an external HDD amounted to the same delays in I/O... The *buntu I am talking about is Ubuntu 8.04 amd 64 LTS, or a clone of it ( CaeLinux 2009 ) which were installed before in this very same laptop. Same Hardware, no disk I/O delay... what other tests can I run to diagnose this stuff...? BRGDS Alex PS: I send my dmesg as attachment 2009/9/30 Stephen John Smoogen <[log in to unmask]> > On Wed, Sep 30, 2009 at 11:43 AM, Alexandre Pereira > <[log in to unmask]> wrote: > > Hi Forum > > > > I have installed SL-5.3 x86_64 default installation/partitioning scheme > in > > my laptop... the only... call it "different" thing that I have done is an > > LVM Luks encryption of my HDD ( It is a laptop, and I carry a lot of > sensble > > stuff in it... ) In know it is not "MIL-SPEC hard" as a pkcs #13 > protocol ( > > Elliptic Curve cryptography over discrete fields ) but man... I do not > > carry warhead design plans, and sizing calculations with me... :-) > > > > Anyway... Trying to dump the content of DVD data, 4.5 Gb of it into my > > desktop took me about 70mn... THIS IS NUTS... Trying to do the same > in > > another install , unencrypted this time, in another machine ammounted to > the > > same... > > > > now, this IS an issue... this laptop will be used in heavy number > > crunching engineering applications... meaning disk I/O operations in the > GB > > range ( Finite elements meshes, Genetic algorithm operations... massive > data > > transfers to put it simply ) > > > > Can this be solved... ? > > > > I used (aaarrgghhhh !!! ) Ubuntu with this same lappy and this problem > was > > not there.... > > > > Well you can give a lot more info because there isn't enough to help with: > 1) What kind of laptop. What kind of disk drive? What kind of DVD drive > 2) What version of Ubuntu did you use (there a ton of different > versions so it will help to figure out what it was ) > 3) what does iostat or another performance program say > 4) Did you get the data from a DVD or network? You reference a desktop > and a laptop.. not sure if you mean 2 differnet types of hardware or > one. > > Realize that IO on laptops is slow. Your standard Laptop drive is > 5400 RPM, and the channel to talk through it is usually not even as > fast as commodity desktops. > > > > > -- > Stephen J Smoogen. > > Ah, but a man's reach should exceed his grasp. Or what's a heaven for? > -- Robert Browning >