Re: IO slowdown with latest FC4 kernel

[Michael Nischt]

I've got the same problem, the harddisk in my dell notebook (precision
M70) extremly slowed down since the kernel update to 2.6.13-1.1526_FC4 -
it became absolutly impossible to work on this computer:

/dev/hda:
 Timing cached reads:   2784 MB in  2.00 seconds = 1391.91 MB/sec
 Timing buffered disk reads:    6 MB in  3.03 seconds =   1.98 MB/sec

Furthermore, I noticed that the harddrive formerly was /dev/sda1 and now
is /dev/hda1, which is probably the reason but I don't know how to fix
this. I hope there is an easy way, because I'm not that familiar with
linux to go into compiling the kernel.

best regards
-Michael Nischt

IO slowdown with latest FC4 kernel

[Gautam Apte]

On 10/2/05, Michael Nischt <zero(a)monoid.net&gt; wrote:
>  I've got the same problem, the harddisk in my dell notebook
> (precision
>  M70) extremly slowed down since the kernel update to 2.6.13-1.1526_FC4 -
>  it became absolutly impossible to work on this computer:
>
>  /dev/hda:
>   Timing cached reads:   2784 MB in  2.00 seconds = 1391.91 MB/sec
>   Timing buffered disk reads:    6 MB in  3.03 seconds =   1.98 MB/sec
>
>  Furthermore, I noticed that the harddrive formerly was /dev/sda1 and now
>  is /dev/hda1, which is probably the reason but I don't know how to fix
>  this. I hope there is an easy way, because I'm not that familiar with
>  linux to go into compiling the kernel.
>
>  best regards
>  -Michael Nischt
>  
Try putting ide0=noprobe in your grub.conf.
-Gautam

IO slowdown with latest FC4 kernel

[Kevin Verma]

I did not noticed the same behaviour of new kernel and thought it was
install of "beagle" which made my machine ot crawl and decided not to
use beagle, but I did noticed that kernel hanged wihile unloading
iptables module and even prevented my machine to shutdown because of
the same.


On 10/2/05, Michael Nischt <zero(a)monoid.net&gt; wrote:
>  I've got the same problem, the harddisk in my dell notebook
> (precision
>  M70) extremly slowed down since the kernel update to 2.6.13-1.1526_FC4 -
>  it became absolutly impossible to work on this computer:
>
>  /dev/hda:
>   Timing cached reads:   2784 MB in  2.00 seconds = 1391.91 MB/sec
>   Timing buffered disk reads:    6 MB in  3.03 seconds =   1.98 MB/sec
>
>  Furthermore, I noticed that the harddrive formerly was /dev/sda1 and now
>  is /dev/hda1, which is probably the reason but I don't know how to fix
>  this. I hope there is an easy way, because I'm not that familiar with
>  linux to go into compiling the kernel.
>
>  best regards
>  -Michael Nischt
>
>  --
>  fedora-list mailing list
>  fedora-list(a)redhat.com
>  To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
>

IO slowdown with latest FC4 kernel

[Manuel Pelayo]

Le dimanche 02 octobre 2005 à 13:13 +0200, Michael Nischt a écrit :
>  I've got the same problem, the harddisk in my dell notebook
> (precision
>  M70) extremly slowed down since the kernel update to 2.6.13-1.1526_FC4 -
>  it became absolutly impossible to work on this computer:
>  
>  /dev/hda:
>   Timing cached reads:   2784 MB in  2.00 seconds = 1391.91 MB/sec
>   Timing buffered disk reads:    6 MB in  3.03 seconds =   1.98 MB/sec
>  
>  Furthermore, I noticed that the harddrive formerly was /dev/sda1 and now
>  is /dev/hda1, which is probably the reason but I don't know how to fix
>  this. I hope there is an easy way, because I'm not that familiar with
>  linux to go into compiling the kernel. 
I've same problem too.
My notebook is a IBM Thinkpad T43.
I've solve this when I add 'ide0=noprobe' in the kernel line of
the /etc/grub.conf file. Here is the diff :

--- grub.conf.old       2005-10-02 16:41:55.000000000 +0200
+++ grub.conf   2005-10-02 17:17:56.000000000 +0200
@@ -14,7 +14,7 @@
 password --md5 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
 title Fedora Core (2.6.13-1.1526_FC4)
        root (hd0,0)
-       kernel /vmlinuz-2.6.13-1.1526_FC4 ro root=LABEL=/ vga=0x303 rhgb
quiet
+       kernel /vmlinuz-2.6.13-1.1526_FC4 ro root=LABEL=/ vga=0x303
ide0=noprobe rhgb quiet
        initrd /initrd-2.6.13-1.1526_FC4.img
 title Fedora Core (2.6.12-1.1456_FC4)
        root (hd0,0)

-- 
Manuel PELAYO <manuel.pelayo(a)manpci.com&gt;

IO slowdown with latest FC4 kernel

[Michael Nischt]

A lot of thanks to Gautam and Manuel

although, there are some strange outputs (see below), performance is now
as usaual :-)

hdparm -Tt /dev/sda1

/dev/sda1:
 Timing cached reads:   2860 MB in  2.00 seconds = 1429.91 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
 Timing buffered disk reads:  112 MB in  3.01 seconds =  37.18 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device


Manuel Pelayo wrote:

> Le dimanche 02 octobre 2005 à 13:13 +0200, Michael Nischt a écrit :
>   
>
> >I've got the same problem, the harddisk in my dell notebook (precision
> >M70) extremly slowed down since the kernel update to 2.6.13-1.1526_FC4 -
> >it became absolutly impossible to work on this computer:
> >
> >/dev/hda:
> > Timing cached reads:   2784 MB in  2.00 seconds = 1391.91 MB/sec
> > Timing buffered disk reads:    6 MB in  3.03 seconds =   1.98 MB/sec
> >
> >Furthermore, I noticed that the harddrive formerly was /dev/sda1 and now
> >is /dev/hda1, which is probably the reason but I don't know how to fix
> >this. I hope there is an easy way, because I'm not that familiar with
> >linux to go into compiling the kernel.
> >    
> >
>
> I've same problem too.
> My notebook is a IBM Thinkpad T43.
> I've solve this when I add 'ide0=noprobe' in the kernel line of
> the /etc/grub.conf file. Here is the diff :
>
> --- grub.conf.old       2005-10-02 16:41:55.000000000 +0200
> +++ grub.conf   2005-10-02 17:17:56.000000000 +0200
> @@ -14,7 +14,7 @@
>  password --md5 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>  title Fedora Core (2.6.13-1.1526_FC4)
>         root (hd0,0)
> -       kernel /vmlinuz-2.6.13-1.1526_FC4 ro root=LABEL=/ vga=0x303 rhgb
> quiet
> +       kernel /vmlinuz-2.6.13-1.1526_FC4 ro root=LABEL=/ vga=0x303
> ide0=noprobe rhgb quiet
>         initrd /initrd-2.6.13-1.1526_FC4.img
>  title Fedora Core (2.6.12-1.1456_FC4)
>         root (hd0,0)
>
>   
>