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SubjectRe: [2.5.54 + ACPI] Slow [Was: Re: [2.5.53] So sloowwwww......]
On Sun, 5 Jan 2003, Paul Rolland wrote:

| Hello,
| >
| > Did you try using acpi=no-idle in your kernel append line (if using
| > lilo) and see what difference that makes? It works in 2.4.
| >
| Followed your advice, and due to lack of documentation regarding
| the acpi= kernel parameters, I tried :
| - acpi=no-idle

This one (above) is the correct syntax.
Looking at the code, it only takes effect if you are using
only 1 CPU.

| - acpi=noidle
| - acpi=no_idle
| without success on a 2.5.54 kernel.
|
| 2.5.54 and ACPI (not only ACPI enumaration) is definitely slow.
| Messages at boot :
| Machine check exception polling timer started.
| CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz stepping 04
| Enabling fast FPU save and restore... done.
| Enabling unmasked SIMD FPU exception support... done.
| Checking 'hlt' instruction... OK.
| POSIX conformance testing by UNIFIX
| enabled ExtINT on CPU#0
| ESR value before enabling vector: 00000000
| ESR value after enabling vector: 00000000
| ENABLING IO-APIC IRQs
| ..TIMER: vector=0x31 pin1=2 pin2=0
| testing the IO APIC.......................
|
| WARNING: unexpected IO-APIC, please mail
| to linux-smp@vger.kernel.org
| .................................... done.
| Using local APIC timer interrupts.
| calibrating APIC timer ...
| ..... CPU clock speed is 2423.0564 MHz.
| ..... host bus clock speed is 134.0642 MHz.
| Linux NET4.0 for Linux 2.4
| Based upon Swansea University Computer Society NET3.039
| Initializing RT netlink socket
| mtrr: v2.0 (20020519)
| PCI: PCI BIOS revision 2.10 entry at 0xf11a0, last bus=1
| PCI: Using configuration type 1
| BIO: pool of 256 setup, 14Kb (56 bytes/bio)
| biovec pool[0]: 1 bvecs: 256 entries (12 bytes)
| biovec pool[1]: 4 bvecs: 256 entries (48 bytes)
| biovec pool[2]: 16 bvecs: 256 entries (192 bytes)
| biovec pool[3]: 64 bvecs: 256 entries (768 bytes)
| biovec pool[4]: 128 bvecs: 256 entries (1536 bytes)
| biovec pool[5]: 256 bvecs: 256 entries (3072 bytes)
| ACPI: Subsystem revision 20021217
| ACPI-0262: *** Info: GPE Block0 defined as GPE0 to GPE15
| ACPI-0262: *** Info: GPE Block1 defined as GPE16 to GPE31
| ACPI: Interpreter enabled
| ACPI: Using IOAPIC for interrupt routing
| ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 10 *11 12 14 15)
| ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 *5 6 7 10 11 12 14 15)
| ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 *7 10 11 12 14 15)
| ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 *10 11 12 14 15)
| ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11 12 14 15, enabled
| at IRQ 9)
| ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12 14 15, enabled
| at IRQ 9)
| ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12 14 15, enabled
| at IRQ 9)
| ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 10 11 12 14 15, enabled
| at IRQ 9)
| ACPI: PCI Root Bridge [PCI0] (00:00)
| PCI: Probing PCI hardware (bus 00)

--
~Randy

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