> Have you tried kernel-secure, or an older kernel (for example the one
> provided with 8.0) ?
>
> Try to disable DMA in /etc/sysconfig/harddisk* (as suggested by John
> Allen).
oh..yes. old kernel is okay. mdk 8.1 is ok (sorry not try mdk 8.0)
red-hat 7.2 is okay. red-hat 7.3 is okay.
DMA must disable.
if DMA enable,
under my test with a scratched CD, only red-7.2 can survive.
mdk 8.1 will lock cd-rom forever until reboot.
mdk 8.2 and red-hat 7.3 will hang.
mdk kernel(include cooker) seems not as new as red-hat in some respects.
it seems red-hat kernel already solve the problem.
(original 2.4.18 + serverworks chipset + smp + highmem = freeze.
it can be checked at www.kerenel.org email list archive, and this
is my problem.)
and redhat's megaraid driver is much faster.
in my hp tc4100 server with hp net-raid 1M raid card,
testing with "hdparm -t /dev/sda"
redhat 7.3 got about 70MB/sec
redhat 7.2 and mandrake 8.2 got only about 30MB/sec
>
> Stef
>
> Le Mardi 28 Mai 2002 18:05, [EMAIL PROTECTED] a ?crit :
>> hi:
>> i test hp-tc4100 with red-hat 7.3 today.
>> it is okay after upgrade to 2.4.18-4.
>> (2.4.18-3 kernel panic after several hours. just like red-hat said.)
>>
>> i also test the latest cooker 2.4.18-16
>> it crashed as usual.
>> so the problem seems at mandrake kernel.
>> hope 2.4.19 will fix it.
>>
>>
>===========================================================================>>===tbsky
> : 27:05 09:34 : Incident created hi:
>> our company buy a hp lc2000 server and try to install mdk 8.2 on it.
>> it can not pass testing and finally we run mdk 8.1 at it.
>> this time we buy a "certified server" -> hp tc4100.
>> the machine arrived today and it fail again.
>> this machine comes with 2 cpu and 1g ram.
>> to use the memory i must enable highmem(eg: enterprise kernel). and
>> with highmem enabled we got crash under testing.
>> i had report this before to:
>>
>> [EMAIL PROTECTED]
>> [EMAIL PROTECTED]
>>
>> and i saw people at list has same problem. but nobody at mandrake
>> answer these questions.
>>
>> i also wrote several times to
>>
>> [EMAIL PROTECTED]
>>
>> although mdk said that email list is not for supporting, but whom
>> should i write if the hardware database is wrong??
>>
>> i'll use paid support tomorrow, but before that, i would like to
>> post it last time for anyone who is interested..below is my
>> experience with hp lc2000 last month. and now tc4100 kill me again.
>>
>> ***************************************************************************>>*
>> ***************************************************************************>>*
>> ***************************************************************************>>*
>>
>> Hello:
>> i m glad that i got ur reply :) let me describe my problem
>> and testing procedure in details...i think the problem is
>> causing by kernel, since redhat 7.2 is fine... and i run
>> memtest86 to test memories, which are fine..
>>
>> 1.) OSB4 DMA bug. it will cause system hang if u leave the ide dma
>> enabled,
>> and u try to read a scratched cd which the cdrom can not read
>> well. redhat 7.2 is fine with dma enabled.
>>
>> 2.) xwindow say mtrr can not use and leave messages below in the
>> syslog:
>> mtrr: Serverworks LE detected. Write-combining disabled.
>> redhat 7.2 is fine.
>>
>> 3.) irq conflict in the linux boot message. at bios boot screen i saw
>> vga using irq 10, lan using irq 9. and cat /proc/pci give me the
>> same result. but boot message say device 00:04:00(lan) want irq
>> 10, which already has irq 9.
>> so i try to lock lan to irq 10 at bios. bios boot screen is fine,
>> vga using irq9, lan using irq 10, cat /proc/pci give me the same.
>> but boot message now tell me device 00:04:00 want irq 9, which
>> already has irq 10... :(
>>
>> 4.) unstable with kernel-enterprise. i test my system with ctcs that
>> comes with mandrake 8.2. and using ctcs default, so it will run
>> "kernel making","memory testing" (with memtest86),and "disk
>> testing" (with badblocks) simultaneously. the system will freeze
>> about 4 hours. the system didn't hang, just freeze, so no more new
>> process. i can switch virtual consoles. i login 3 virtual consoles
>> before testing, one run ctcs,one run top, and one stay at shell
>> prompt.
>> and when freezing:
>> the ctcs clock is still ticking at console 1.
>> the top process is hang at console 2. looking at time at up-left
>> corner, i can know when the system froze.
>> i can type command at console 3, the shell prompt, but it will
>> hang after i hit "enter" if need a new process.
>>
>> there is a clue but i don't understand. during testing of ctcs,
>> sometimes there is error below in the syslog:
>>
>> "kernel: Warning: dev (04:01) tty->count(5) != #fd'(4) in
>> tty-open"
>>
>> the message appear about every 20-30 minutes. and after about 10
>> messages, the system froze.
>> redhat 7.2 with ctcs comes with MDK 8.2 pass the testing for 12
>> hours...
>>
>> Regards,
>> tbsky
>>
>> >> Hello:
>> >> i install mandrake 8.2 on a HP lc2000 u3 srever with 1GB ram and 2
>> >> cpu,
>> >> it is unstable with enterprise kernel. i found a link which is the
>> >> same as my problem:
>> >>
>> >> http://marc.theaimsgroup.com/?l=linux-kernel&m=101770689615279&w=2
>> >>
>> >> i also try the kernel in cooker but the same.
>> >> and when i start X under 8.2,
>> >> i have no experience with serverworks chipset before.
>> >> does serverworks support linux? should i prevent it in the future?
>> >
>> > Yes. ServerWorks chipsets are supported. I have about 20 Dell PE
>> > 2xx0 (ServerWorks chipset based) servers, two cpus, mostly 1G RAM.
>> > All working fine, distrib kernel from mdk 8.1 and/or from mdk 8.2.
>> > One diffence: i use kernel-secure (it's based on kernel-enterprise).
>> >
>> > IMHO problem is motherboard/memmory not in chipset. All (two) my HP
>> > server are shit hardware, mandrake have healthy problems on it.
>> >
>> > Zdenek Mazanec
>>
>> ===========================================================================>>===
