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viz
Guest
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 Posted: Tue Nov 11, 2008 4:12 am Post subject: Intel Quad Core performance on CentOS 5.2 is slower |
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Hello everyone,
I recently got a system with the following specs:
* Intel Quad Core 2.5Ghz with 1333Mhz FSB 6MB L2 cache
* 4GB DDR2 memory
* 320GB Seagate Barracuda SATA 7200rpm hard disk
* Geforce 8400gs graphics card (fanless) (I installed the most recent
driver)
I installed CentOS 5.2 (kernel 2.6.18-92.1.17.el5) on this machine. I
expected the system to be faster compared to my another machine (Intel
P4 CPU 2.53 GHz, 1GB RAM) assuming it makes effective use of 4 cores.
However, the system is slow while running any application. When I
check the processor usage in the system monitor, it shows only one
core being used most of the time. Load on other cores is 1-3% during
this time.
Any idea what I should check on my system and how can I make it
faster? It takes lot of time even in booting up and executing simple
commands on the terminal.
Sincerely,
Kumar Vijay Mishra. |
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viz
Guest
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| Posted: Tue Nov 11, 2008 7:35 am Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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On Nov 10, 9:38 pm, ray <r...@zianet.com> wrote:
| Quote: |
Unless your application is specifically coded for parallel optimization
you won't see any significant speed up no matter how many cores or cpus
you throw at it. If you try running three or four applications or three or
four instances of the same one, you should see more than one processor
loaded and see appropriate speed ups.
|
Thanks ray for your reply. I can understand that it is more for the
applications to make use of the multi-core cpu. But what alarms me is
that this machine is even slower than my Intel P4, 1GB Ram one. It
takes a lot of time for simple tasks like downloading files over
internet (the connections are same for both the machines), executing
commands like vi, cd, tar etc. Isn't that unusual? |
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ray
Guest
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| Posted: Tue Nov 11, 2008 8:34 am Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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On Mon, 10 Nov 2008 20:12:01 -0800, viz wrote:
| Quote: | Hello everyone,
I recently got a system with the following specs:
* Intel Quad Core 2.5Ghz with 1333Mhz FSB 6MB L2 cache * 4GB DDR2 memory
* 320GB Seagate Barracuda SATA 7200rpm hard disk * Geforce 8400gs
graphics card (fanless) (I installed the most recent driver)
I installed CentOS 5.2 (kernel 2.6.18-92.1.17.el5) on this machine. I
expected the system to be faster compared to my another machine (Intel
P4 CPU 2.53 GHz, 1GB RAM) assuming it makes effective use of 4 cores.
However, the system is slow while running any application. When I check
the processor usage in the system monitor, it shows only one core being
used most of the time. Load on other cores is 1-3% during this time.
Any idea what I should check on my system and how can I make it faster?
It takes lot of time even in booting up and executing simple commands on
the terminal.
Sincerely,
Kumar Vijay Mishra.
|
Unless your application is specifically coded for parallel optimization
you won't see any significant speed up no matter how many cores or cpus
you throw at it. If you try running three or four applications or three or
four instances of the same one, you should see more than one processor
loaded and see appropriate speed ups. |
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General Schvantzkoph
Guest
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| Posted: Tue Nov 11, 2008 7:03 pm Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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On Mon, 10 Nov 2008 20:12:01 -0800, viz wrote:
| Quote: | Hello everyone,
I recently got a system with the following specs:
* Intel Quad Core 2.5Ghz with 1333Mhz FSB 6MB L2 cache * 4GB DDR2 memory
* 320GB Seagate Barracuda SATA 7200rpm hard disk * Geforce 8400gs
graphics card (fanless) (I installed the most recent driver)
I installed CentOS 5.2 (kernel 2.6.18-92.1.17.el5) on this machine. I
expected the system to be faster compared to my another machine (Intel
P4 CPU 2.53 GHz, 1GB RAM) assuming it makes effective use of 4 cores.
However, the system is slow while running any application. When I check
the processor usage in the system monitor, it shows only one core being
used most of the time. Load on other cores is 1-3% during this time.
Any idea what I should check on my system and how can I make it faster?
It takes lot of time even in booting up and executing simple commands on
the terminal.
Sincerely,
Kumar Vijay Mishra.
|
Try setting the speed governor to Performance to see if that makes a
difference.
echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor
echo performance > /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor
If it does, put a modern kernel on the system or switch to a modern
distro like Fedora. I have a 2.6.24.7 kernel on my CentOS5.2 box, I
wasn't able to get anything newer than that to boot on CentOS but .24 is
a lot newer than .18. |
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ray
Guest
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| Posted: Tue Nov 11, 2008 10:01 pm Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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On Mon, 10 Nov 2008 23:35:17 -0800, viz wrote:
| Quote: | On Nov 10, 9:38 pm, ray <r...@zianet.com> wrote:
Unless your application is specifically coded for parallel optimization
you won't see any significant speed up no matter how many cores or cpus
you throw at it. If you try running three or four applications or three
or four instances of the same one, you should see more than one
processor loaded and see appropriate speed ups.
Thanks ray for your reply. I can understand that it is more for the
applications to make use of the multi-core cpu. But what alarms me is
that this machine is even slower than my Intel P4, 1GB Ram one. It takes
a lot of time for simple tasks like downloading files over internet (the
connections are same for both the machines), executing commands like vi,
cd, tar etc. Isn't that unusual?
|
Should be about the same. Have you checked your internet connection - made
sure you have the best interface driver; checked hdparm output? |
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viz
Guest
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| Posted: Wed Nov 12, 2008 2:40 am Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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Hi folks,
Thanks a lot for your replies.
@ ray and Trevor Hemsley: I tried running hdparm and got some very
dismal results:
$ sudo /sbin/hdparm -Tt /dev/hda5
/dev/hdb5:
Timing cached reads: 7652 MB in 2.00 seconds = 3828.05 MB/sec
Timing buffered disk reads: 12 MB in 3.07 seconds = 3.90 MB/sec
The hdparm won't let me set the DMA on. However setting IO_support
flag to 3 does double the performance:
$ /sbin/hdparm -X66 -d1 -u1 -m16 -c3 /dev/hda
/dev/hda:
setting 32-bit IO_support flag to 3
setting multcount to 16
setting unmaskirq to 1 (on)
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
setting xfermode to 66 (UltraDMA mode2)
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 0 (off)
$ /sbin/hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 7664 MB in 2.00 seconds = 3833.37 MB/sec
Timing buffered disk reads: 24 MB in 3.17 seconds = 7.56 MB/sec
------------
My other P4 machine (which has DMA flag on in hdparm) has a Test Read
performance of 34 MB/sec.
@ General Schvantzkoph: I had 2.6.18-92.1.17.el5PAE kernel on CentOS
5.2. I upgraded it to 2.6.22.19 (I can't use kernels later than this
as some of my applications won't support that).
However the results of hdparm were same.
Any pointers about how can I improve the performance? Any help would
be greatly appreciated.
Sincerely,
Kumar Vijay Mishra. |
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viz
Guest
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| Posted: Wed Nov 12, 2008 2:40 am Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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Hi folks,
Thanks a lot for your replies.
@ ray and Trevor Hemsley: I tried running hdparm and got some very
dismal results:
$ sudo /sbin/hdparm -Tt /dev/hda5
/dev/hdb5:
Timing cached reads: 7652 MB in 2.00 seconds = 3828.05 MB/sec
Timing buffered disk reads: 12 MB in 3.07 seconds = 3.90 MB/sec
The hdparm won't let me set the DMA on. However setting IO_support
flag to 3 does double the performance:
$ /sbin/hdparm -X66 -d1 -u1 -m16 -c3 /dev/hda
/dev/hda:
setting 32-bit IO_support flag to 3
setting multcount to 16
setting unmaskirq to 1 (on)
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
setting xfermode to 66 (UltraDMA mode2)
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 0 (off)
$ /sbin/hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 7664 MB in 2.00 seconds = 3833.37 MB/sec
Timing buffered disk reads: 24 MB in 3.17 seconds = 7.56 MB/sec
------------
My other P4 machine (which has DMA flag on in hdparm) has a Test Read
performance of 34 MB/sec.
@ General Schvantzkoph: I had 2.6.18-92.1.17.el5PAE kernel on CentOS
5.2. I upgraded it to 2.6.22.19 (I can't use kernels later than this
as some of my applications won't support that).
However the results of hdparm were same.
Any pointers about how can I improve the performance? Any help would
be greatly appreciated.
Sincerely,
Kumar Vijay Mishra. |
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viz
Guest
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| Posted: Wed Nov 12, 2008 2:40 am Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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Hi folks,
Thanks a lot for your replies.
@ ray and Trevor Hemsley: I tried running hdparm and got some very
dismal results:
$ sudo /sbin/hdparm -Tt /dev/hda5
/dev/hdb5:
Timing cached reads: 7652 MB in 2.00 seconds = 3828.05 MB/sec
Timing buffered disk reads: 12 MB in 3.07 seconds = 3.90 MB/sec
The hdparm won't let me set the DMA on. However setting IO_support
flag to 3 does double the performance:
$ /sbin/hdparm -X66 -d1 -u1 -m16 -c3 /dev/hda
/dev/hda:
setting 32-bit IO_support flag to 3
setting multcount to 16
setting unmaskirq to 1 (on)
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
setting xfermode to 66 (UltraDMA mode2)
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 0 (off)
$ /sbin/hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 7664 MB in 2.00 seconds = 3833.37 MB/sec
Timing buffered disk reads: 24 MB in 3.17 seconds = 7.56 MB/sec
------------
My other P4 machine (which has DMA flag on in hdparm) has a Test Read
performance of 34 MB/sec.
@ General Schvantzkoph: I had 2.6.18-92.1.17.el5PAE kernel on CentOS
5.2. I upgraded it to 2.6.22.19 (I can't use kernels later than this
as some of my applications won't support that).
However the results of hdparm were same.
Any pointers about how can I improve the performance? Any help would
be greatly appreciated.
Sincerely,
Kumar Vijay Mishra. |
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| Back to top |
Trevor Hemsley
Guest
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| Posted: Wed Nov 12, 2008 6:25 am Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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On Tue, 11 Nov 2008 04:12:01 UTC in comp.os.linux.hardware, viz
<vizziee@gmail.com> wrote:
| Quote: | Any idea what I should check on my system and how can I make it
faster? It takes lot of time even in booting up and executing simple
commands on the terminal.
|
Have you tried to narrow down where the bottleneck is? Run hdparm -tT /dev/sda
(or whatever your hard disk is) and see if you get decent numbers from it. Try
running a memtest86 boot CD and making sure that looks ok too. How about running
glxgears and getting fps numbers from that - not great indicators but the only
way I can think of of getting video performance stats.
A Core2Quad should be faster per megahertz than an old P4 - we have 2.66GHz quad
core Xeons at work that are faster than 3GHz P4 Xeons per core.
--
Trevor Hemsley, Brighton, UK
Trevor dot Hemsley at ntlworld dot com |
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General Schvantzkoph
Guest
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| Posted: Wed Nov 12, 2008 8:11 am Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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On Tue, 11 Nov 2008 18:40:07 -0800, viz wrote:
| Quote: | Hi folks,
Thanks a lot for your replies.
@ ray and Trevor Hemsley: I tried running hdparm and got some very
dismal results:
$ sudo /sbin/hdparm -Tt /dev/hda5
/dev/hdb5:
Timing cached reads: 7652 MB in 2.00 seconds = 3828.05 MB/sec Timing
buffered disk reads: 12 MB in 3.07 seconds = 3.90 MB/sec
The hdparm won't let me set the DMA on. However setting IO_support flag
to 3 does double the performance: $ /sbin/hdparm -X66 -d1 -u1 -m16 -c3
/dev/hda /dev/hda:
setting 32-bit IO_support flag to 3
setting multcount to 16
setting unmaskirq to 1 (on)
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted setting xfermode to 66
(UltraDMA mode2) multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 0 (off)
$ /sbin/hdparm -Tt /dev/hda
/dev/hda:
Timing cached reads: 7664 MB in 2.00 seconds = 3833.37 MB/sec Timing
buffered disk reads: 24 MB in 3.17 seconds = 7.56 MB/sec
------------
My other P4 machine (which has DMA flag on in hdparm) has a Test Read
performance of 34 MB/sec.
@ General Schvantzkoph: I had 2.6.18-92.1.17.el5PAE kernel on CentOS
5.2. I upgraded it to 2.6.22.19 (I can't use kernels later than this as
some of my applications won't support that). However the results of
hdparm were same.
Any pointers about how can I improve the performance? Any help would be
greatly appreciated.
Sincerely,
Kumar Vijay Mishra.
|
A newer kernel will have better drivers. Download 2.6.24.7 from
kernel.org and build a custom kernel.
http://www.kernel.org/pub/linux/kernel/v2.6/ |
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Benjamin Rampe
Guest
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| Posted: Wed Nov 12, 2008 4:34 pm Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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Hi,
viz schrieb:
| Quote: | Any pointers about how can I improve the performance? Any help would
be greatly appreciated.
|
!!!
Please post the output of "lspci" or "lshw"
!!!
---
DISTRIB: Ubuntu 7.10 i386
CPU: Core2 E6850@3GHz
HD: Seagate ST380215AS (standard office "crap")
Kernel: 2.6.22-15-generic
# sudo /sbin/hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 8946 MB in 2.00 seconds = 4476.92 MB/sec
Timing buffered disk reads: 224 MB in 3.02 seconds = 74.14 MB/sec
# lspci
--- %< ---
00:1f.2 IDE interface: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 4
port SATA IDE Controller (rev 02)
--- %< ---
I wonder why your hd doesn't show up as scsi device...
Regards,
Benjamin |
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Cork Soaker
Guest
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| Posted: Wed Nov 12, 2008 5:08 pm Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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Benjamin Rampe wrote:
| Quote: | HD: Seagate ST380215AS (standard office "crap")
|
Are you serious?
| Quote: | /dev/sda:
Timing cached reads: 8946 MB in 2.00 seconds = 4476.92 MB/sec
|
/dev/sda:
Timing cached reads: 424 MB in 2.01 seconds = 211.18 MB/sec
/dev/sdb:
Timing cached reads: 510 MB in 2.00 seconds = 254.80 MB/sec
/dev/sdc:
Timing cached reads: 482 MB in 2.00 seconds = 240.73 MB/sec
I must have really crappy stuff then! |
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viz
Guest
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| Posted: Wed Nov 12, 2008 6:08 pm Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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Thanks to all of you for replying.
@ General Schvantzkoph: As I wrote before, I cannot go beyond 2.6.23
as some of my applications won't support those kernels.
@ Cork Soaker: Wow! Would you write how can I improve my HD
performance so that it is at least 25% of the one you are getting
there? :-)
@ Benjamin Rampe: Thanks. I have no idea why HD doesn't show up as
SCSI device. Here are the outputs of the commands you suggested:
$ sudo /sbin/lspci
00:00.0 Host bridge: Intel Corporation Eaglelake DRAM Controller (rev
02)
00:01.0 PCI bridge: Intel Corporation Eaglelake PCI Express Root Port
(rev 02)
00:1a.0 USB Controller: Intel Corporation ICH10 USB UHCI Controller #4
00:1a.1 USB Controller: Intel Corporation ICH10 USB UHCI Controller #5
00:1a.2 USB Controller: Intel Corporation ICH10 USB UHCI Controller #6
00:1a.7 USB Controller: Intel Corporation ICH10 USB2 EHCI Controller
#2
00:1b.0 Audio device: Intel Corporation ICH10 HD Audio Controller
00:1c.0 PCI bridge: Intel Corporation ICH10 PCI Express Port 1
00:1c.3 PCI bridge: Intel Corporation ICH10 PCI Express Port 4
00:1c.4 PCI bridge: Intel Corporation ICH10 PCI Express Port 5
00:1c.5 PCI bridge: Intel Corporation ICH10 PCI Express Port 6
00:1d.0 USB Controller: Intel Corporation ICH10 USB UHCI Controller #1
00:1d.1 USB Controller: Intel Corporation ICH10 USB UHCI Controller #2
00:1d.2 USB Controller: Intel Corporation ICH10 USB UHCI Controller #3
00:1d.7 USB Controller: Intel Corporation ICH10 USB2 EHCI Controller
#1
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90)
00:1f.0 ISA bridge: Intel Corporation ICH10 LPC Interface Controller
00:1f.2 IDE interface: Intel Corporation ICH10 4 port SATA IDE
Controller
00:1f.3 SMBus: Intel Corporation ICH10 SMBus Controller
00:1f.5 IDE interface: Intel Corporation ICH10 2 port SATA IDE
Controller
01:00.0 VGA compatible controller: nVidia Corporation Unknown device
06e4 (rev a1)
03:00.0 IDE interface: JMicron Technologies, Inc. JMB368 IDE
controller
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
06:07.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23
IEEE-1394a-2000 Controller (PHY/Link)
bash-3.2$ sudo /usr/sbin/lshw -short
H/W path Device Class Description
===================================================
system EP45-DS3R
/2 bus EP45-DS3R
/2/0 memory 128KiB BIOS
/2/4 processor Intel(R) Core(TM)2 Quad CPU
Q9300 @
/2/4/a memory 64KiB L1 cache
/2/4/b memory 3MiB L2 cache
/2/4/0.1 processor Logical CPU
/2/4/0.2 processor Logical CPU
/2/4/0.3 processor Logical CPU
/2/4/0.4 processor Logical CPU
/2/19 memory 4GiB System Memory
/2/19/0 memory 2GiB DIMM 800 MHz (1.2 ns)
/2/19/1 memory DIMM [empty]
/2/19/2 memory 2GiB DIMM 800 MHz (1.2 ns)
/2/19/3 memory DIMM [empty]
/2/1 processor
/2/1/0.1 processor Logical CPU
/2/1/0.2 processor Logical CPU
/2/1/0.3 processor Logical CPU
/2/1/0.4 processor Logical CPU
/2/2 processor
/2/2/0.1 processor Logical CPU
/2/2/0.2 processor Logical CPU
/2/2/0.3 processor Logical CPU
/2/2/0.4 processor Logical CPU
/2/3 processor
/2/3/0.1 processor Logical CPU
/2/3/0.2 processor Logical CPU
/2/3/0.3 processor Logical CPU
/2/3/0.4 processor Logical CPU
/2/100 bridge Eaglelake DRAM Controller
/2/100/1 bridge Eaglelake PCI Express Root
Port
/2/100/1/0 display nVidia Corporation
/2/100/1a bus ICH10 USB UHCI Controller #4
/2/100/1a/1 /dev/usb3 bus UHCI Host Controller
/2/100/1a.1 bus ICH10 USB UHCI Controller #5
/2/100/1a.1/1 /dev/usb4 bus UHCI Host Controller
/2/100/1a.2 bus ICH10 USB UHCI Controller #6
/2/100/1a.2/1 /dev/usb5 bus UHCI Host Controller
/2/100/1a.7 bus ICH10 USB2 EHCI Controller #2
/2/100/1a.7/1 /dev/usb1 bus EHCI Host Controller
/2/100/1b multimedia ICH10 HD Audio Controller
/2/100/1c bridge ICH10 PCI Express Port 1
/2/100/1c.3 bridge ICH10 PCI Express Port 4
/2/100/1c.3/0 storage JMB368 IDE controller
/2/100/1c.4 bridge ICH10 PCI Express Port 5
/2/100/1c.4/0 eth0 network RTL8111/8168B PCI Express
Gigabit Ethern
/2/100/1c.5 bridge ICH10 PCI Express Port 6
/2/100/1c.5/0 eth1 network RTL8111/8168B PCI Express
Gigabit Ethern
/2/100/1d bus ICH10 USB UHCI Controller #1
/2/100/1d/1 /dev/usb6 bus UHCI Host Controller
/2/100/1d.1 bus ICH10 USB UHCI Controller #2
/2/100/1d.1/1 /dev/usb7 bus UHCI Host Controller
/2/100/1d.2 bus ICH10 USB UHCI Controller #3
/2/100/1d.2/1 /dev/usb8 bus UHCI Host Controller
/2/100/1d.2/1/1 generic USB Keyboard
/2/100/1d.2/1/2 generic Microsoft 3-Button Mouse with
IntelliEye
/2/100/1d.7 bus ICH10 USB2 EHCI Controller #1
/2/100/1d.7/1 /dev/usb2 bus EHCI Host Controller
/2/100/1e bridge 82801 PCI Bridge
/2/100/1e/7 bus TSB43AB23 IEEE-1394a-2000
Controller (PH
/2/100/1f bridge ICH10 LPC Interface Controller
/2/100/1f.2 storage ICH10 4 port SATA IDE
Controller
/2/100/1f.3 bus ICH10 SMBus Controller
/2/100/1f.5 storage ICH10 2 port SATA IDE
Controller
/0 ide0 bus IDE Channel 0
/0/0 /dev/hda disk 320GB ST3320620AS
/0/0/1 /dev/hda1 volume 101MiB EXT3 volume
/0/0/2 /dev/hda2 volume 19GiB EXT3 volume
/0/0/3 /dev/hda3 volume 4094MiB Linux swap volume
/0/0/4 /dev/hda4 volume 274GiB Extended partition
/0/0/4/5 /dev/hda5 volume 274GiB Linux filesystem
partition
/1 ide1 bus IDE Channel 0
/1/0 /dev/hdc disk Optiarc DVD RW AD-7200S
------------------------
Also, when I run lshw-gui, in the IDE interface section it says "This
device hasn't been claimed".
Sincerely,
Kumar Vijay Mishra. |
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viz
Guest
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| Posted: Wed Nov 12, 2008 6:12 pm Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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Specifically output of lshw-gui for IDE Channel 0 -> ATA Disk is as
follows:
ATA Disk
/0/0
product: ST3320620AS
vendor: Seagate
bus info: ide@0.0
logical name: /dev/hda
version: 3.AAE
serial: 6QF3RMR9
size: 298GiB (320GB)
capabilities:
ATA,
Direct Memory Access,
Large Block Addressing,
I/O ready reporting,
S.M.A.R.T. (Self-Monitoring And Reporting Technology),
ATA security extensions,
Power Management,
Partitioned disk,
MS-DOS partition table
configuration:
mode: udma2
signature: f392e570
smart: on
-----------------------
The output of Motherboard -> Host Bridge -> IDE Interface is as
follows:
IDE interface
/2/100/1f.2
product: ICH10 4 port SATA IDE Controller
vendor: Intel Corporation
bus info: pci@0000:00:1f.2
version: 00
width: 32 bits
clock: 66MHz
capabilities:
ide,
Power Management,
bus mastering,
PCI capabilities listing
configuration:
latency: 0
this device hasn't been claimed
----------------------
Sincerely,
Kumar Vijay Mishra. |
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General Schvantzkoph
Guest
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| Posted: Thu Nov 13, 2008 12:29 am Post subject: Re: Intel Quad Core performance on CentOS 5.2 is slower |
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On Wed, 12 Nov 2008 10:12:26 -0800, viz wrote:
| Quote: | Specifically output of lshw-gui for IDE Channel 0 -> ATA Disk is as
follows:
ATA Disk
/0/0
product: ST3320620AS
vendor: Seagate
bus info: ide@0.0
logical name: /dev/hda
version: 3.AAE
serial: 6QF3RMR9
size: 298GiB (320GB)
capabilities:
ATA,
Direct Memory Access,
Large Block Addressing,
I/O ready reporting,
S.M.A.R.T. (Self-Monitoring And Reporting Technology), ATA
security
extensions,
Power Management,
Partitioned disk,
MS-DOS partition table
configuration:
mode: udma2
signature: f392e570
smart: on
-----------------------
The output of Motherboard -> Host Bridge -> IDE Interface is as follows:
IDE interface
/2/100/1f.2
product: ICH10 4 port SATA IDE Controller vendor: Intel Corporation
bus info: pci@0000:00:1f.2
version: 00
width: 32 bits
clock: 66MHz
capabilities:
ide,
Power Management,
bus mastering,
PCI capabilities listing
configuration:
latency: 0
this device hasn't been claimed
----------------------
Sincerely,
Kumar Vijay Mishra.
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Have you tried a newer kernel yet? The 2.6.18 kernel predated the Core2,
the drivers in it are for ICH9, I'm pretty sure ICH10 came out after
2.6.18. Redhat doesn't bother updating their kernel for desktop hardware.
The best way to get proper driver support is to put on a later kernel,
I'm using 2.6.24.7 on my Core2 system. Building a kernel is easy, just
configure it with make gconfig and then do,
make -j 2 all
make modules_install
make install |
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