Hi,
I've got an old 2xP-II @ 400MHz Compaq AP400 system, which I'm still
using. It has many peculiarities, so, I wouldn't be surprised if the
answer to my questions would be "sorry, the patient is rather dead than
alive".
Some of the problems lie in ACPI area, I tried some time ago to fix the
ACPI tables for these machine, but never got enough time for that. So I'm
still booting with acpi=noirq
Another problem is its battery is dead and it's hard soldered to the
mainboard (Compaq)...
It might also have some problems with one of its 3 SCSI busses.
I compiled a .24-ish kernel for it with CONFIG_NO_HZ and
CONFIG_HIGH_RES_TIMERS. To get the system boot at least sometimes I have
to specify nohz=off. Then I get
* Found PM-Timer Bug on the chipset. Due to workarounds for a bug,
* this clock source is slow. Consider trying other clock sources
Without this parameter it hangs usually between
Time: acpi_pm clocksource has been installed.
and
Switched to high resolution mode on CPU 1
Switched to high resolution mode on CPU 0
Tried booting with clocksource=tsc then I've got
Marking TSC unstable due to: possible TSC halt in C2.
And then a few of these:
BUG: soft lockup - CPU#0 stuck for 13s! [swapper:0]
Pid: 0, comm: swapper Not tainted (2.6.24-rc2-g8c086340 #3)
EIP: 0060:[<c0233d33>] EFLAGS: 00000283 CPU: 0
EIP is at acpi_processor_idle+0x2ae/0x477
EAX: 00000000 EBX: fffffeab ECX: 00000001 EDX: 00000001
ESI: c7c5f2d0 EDI: 00122d9f EBP: c03ddfa8 ESP: c03ddf90
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
CR0: 8005003b CR2: 081dcf88 CR3: 07e46000 CR4: 000002d0
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff0ff0 DR7: 00000400
[<c01053fa>] show_trace_log_lvl+0x1a/0x30
[<c0105f42>] show_trace+0x12/0x20
[<c01024fc>] show_regs+0x1c/0x20
[<c014fabb>] softlockup_tick+0x11b/0x150
[<c01311f2>] run_local_timers+0x12/0x20
[<c013168f>] update_process_times+0x2f/0x60
[<c014597a>] tick_sched_timer+0x6a/0xe0
[<c013fba0>] hrtimer_interrupt+0x120/0x1a0
[<c0119ff5>] smp_apic_timer_interrupt+0x55/0x90
[<c0104e70>] apic_timer_interrupt+0x28/0x30
[<c0102624>] cpu_idle+0x84/0xf0
[<c0316a7d>] rest_init+0x5d/0x60
[<c03e1a7f>] start_kernel+0x2af/0x2f0
[<00000000>] run_init_process+0x3feff000/0x20
=======================
so, is there any way I can still reasonably use this system? Which
configuration / command-line parameters should I try?
If needed can provide complete dmesg (with nohz=off or with
clocksource=tsc) and .config.
Thanks
Guennadi
---
Guennadi Liakhovetski
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