What's the right value for idle= (was: Re: [linux-pm] regression on P-II SMP)

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* What's the right value for idle= (was: Re: [linux-pm] regression on P-II SMP)
       [not found] <Pine.LNX.4.64.1002212117540.9624@axis700.grange>
@ 2010-02-21 20:36 ` Rafael J. Wysocki
  2010-02-21 21:02   ` Pallipadi, Venkatesh
  2010-02-21 21:11   ` Arjan van de Ven
  0 siblings, 2 replies; 5+ messages in thread
From: Rafael J. Wysocki @ 2010-02-21 20:36 UTC (permalink / raw)
  To: Guennadi Liakhovetski
  Cc: linux-pm, LKML, ACPI Devel Maling List, Venki Pallipadi,
	Len Brown, Arjan van de Ven

On Sunday 21 February 2010, Guennadi Liakhovetski wrote:
> Hi
> 
> my 2xP-II@400MHz locks up with 2.6.32(.X) unless I specify "idle=*" on the 
> kernel command-line, where "*" is one of "poll," "mwait," "halt," and only 
> "nomwait" indeed locks it up. Last kernel known to work was 2.6.25. So, it 
> doesn't bother me all that much - I have a way to boot it, but maybe 
> someone would be interested to fix this (this system already has a few 
> quirks on the kernel command line, so, one more doesn't really hurt;)). 
> What interests me more - which of those shall I be using? From 
> Documentation/kernel-parameters.txt it looks like "mwait" should be best 
> for me? Or should I be using "halt?" "Poll" does indeed fry CPUs - raises 
> sys temperatures to 50 / 60 degrees C. Power-saving is not that much of a 
> concern for me - I only run that system occasionally, but it shouldn't 
> produce more heat than it must;) And since this system does have a broken 
> ACPI (Compaq AP400), I wouldn't try to be too smart with it.

I guess "mwait" is the right one, but let's try to ask experts.

Rafael

^ permalink raw reply	[flat|nested] 5+ messages in thread

* RE: What's the right value for idle= (was: Re: [linux-pm] regression on P-II SMP)
  2010-02-21 20:36 ` What's the right value for idle= (was: Re: [linux-pm] regression on P-II SMP) Rafael J. Wysocki
@ 2010-02-21 21:02   ` Pallipadi, Venkatesh
  2010-02-22 21:52     ` Guennadi Liakhovetski
  2010-02-21 21:11   ` Arjan van de Ven
  1 sibling, 1 reply; 5+ messages in thread
From: Pallipadi, Venkatesh @ 2010-02-21 21:02 UTC (permalink / raw)
  To: Rafael J. Wysocki, Guennadi Liakhovetski
  Cc: linux-pm, LKML, ACPI Devel Maling List, Len Brown, Arjan van de Ven

>-----Original Message-----
>From: Rafael J. Wysocki [mailto:rjw@sisk.pl] 
>Sent: Sunday, February 21, 2010 12:36 PM
>To: Guennadi Liakhovetski
>Cc: linux-pm@lists.linux-foundation.org; LKML; ACPI Devel 
>Maling List; Pallipadi, Venkatesh; Len Brown; Arjan van de Ven
>Subject: What's the right value for idle= (was: Re: [linux-pm] 
>regression on P-II SMP)
>
>On Sunday 21 February 2010, Guennadi Liakhovetski wrote:
>> Hi
>> 
>> my 2xP-II@400MHz locks up with 2.6.32(.X) unless I specify 
>"idle=*" on the 
>> kernel command-line, where "*" is one of "poll," "mwait," 
>"halt," and only 
>> "nomwait" indeed locks it up. Last kernel known to work was 
>2.6.25. So, it 
>> doesn't bother me all that much - I have a way to boot it, but maybe 
>> someone would be interested to fix this (this system already 
>has a few 
>> quirks on the kernel command line, so, one more doesn't 
>really hurt;)). 
>> What interests me more - which of those shall I be using? From 
>> Documentation/kernel-parameters.txt it looks like "mwait" 
>should be best 
>> for me? Or should I be using "halt?" "Poll" does indeed fry 
>CPUs - raises 
>> sys temperatures to 50 / 60 degrees C. Power-saving is not 
>that much of a 
>> concern for me - I only run that system occasionally, but it 
>shouldn't 
>> produce more heat than it must;) And since this system does 
>have a broken 
>> ACPI (Compaq AP400), I wouldn't try to be too smart with it.
>
>I guess "mwait" is the right one, but let's try to ask experts.
>

This CPU doesn't support mwait. So, idle=halt is what you should be using. That said, halt based idle is what should be used on this system by default, unless it supports ACPI based C-states. Can you send in the dmesg, with 2.6.25 without any boot parameter.

Thanks,
Venki

^ permalink raw reply	[flat|nested] 5+ messages in thread

* RE: What's the right value for idle= (was: Re: [linux-pm] regression on P-II SMP)
  2010-02-21 21:02   ` Pallipadi, Venkatesh
@ 2010-02-22 21:52     ` Guennadi Liakhovetski
  0 siblings, 0 replies; 5+ messages in thread
From: Guennadi Liakhovetski @ 2010-02-22 21:52 UTC (permalink / raw)
  To: Pallipadi, Venkatesh
  Cc: Rafael J. Wysocki, linux-pm, LKML, ACPI Devel Maling List,
	Len Brown, Arjan van de Ven

On Sun, 21 Feb 2010, Pallipadi, Venkatesh wrote:

> This CPU doesn't support mwait. So, idle=halt is what you should be 
> using. That said, halt based idle is what should be used on this system 
> by default, unless it supports ACPI based C-states. Can you send in the 
> dmesg, with 2.6.25 without any boot parameter.

I do need some parameters to boot at all, notable "acpi=noirq" otherwise:

Linux version 2.6.25 (lyakh@6a) (gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)) #2 SMP PREEMPT Wed Apr 23 18:56:29 CEST 2008
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
 BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 0000000008000000 (usable)
 BIOS-e820: 00000000fec00000 - 00000000fed00000 (reserved)
 BIOS-e820: 00000000fee00000 - 00000000fef00000 (reserved)
 BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
128MB LOWMEM available.
Scan SMP from c0000000 for 1024 bytes.
Scan SMP from c009fc00 for 1024 bytes.
Scan SMP from c00f0000 for 65536 bytes.
found SMP MP-table at [c00f6680] 000f6680
Entering add_active_range(0, 0, 32768) 0 entries of 256 used
Zone PFN ranges:
  DMA             0 ->     4096
  Normal       4096 ->    32768
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
    0:        0 ->    32768
On node 0 totalpages: 32768
  DMA zone: 32 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 4064 pages, LIFO batch:0
  Normal zone: 224 pages used for memmap
  Normal zone: 28448 pages, LIFO batch:7
  Movable zone: 0 pages used for memmap
DMI not present or invalid.
ACPI: RSDP 000EC010, 0014 (r0 COMPAQ)
ACPI: RSDT 000EC080, 0034 (r1 COMPAQ LAREDO          1             0)
ACPI: FACP 000EC0CC, 0074 (r1 COMPAQ LAREDO          1             0)
ACPI: DSDT 000EC19A, 093D (r1 COMPAQ     DSDT        1 MSFT  1000005)
ACPI: FACS 000EC040, 0040
ACPI: APIC 000EC140, 005A (r1 COMPAQ LAREDO          1             0)
ACPI: SSDT 000ECAD7, 0C15 (r1 COMPAQ VILLTBL1        1 MSFT  1000005)
ACPI: SSDT 000ED6EC, 03E5 (r1 COMPAQ PNP_PRSS        1 MSFT  1000005)
ACPI: PM-Timer IO Port: 0xf808
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 6:5 APIC version 17
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
Processor #1 6:5 APIC version 17
Using ACPI for processor (LAPIC) configuration information
Intel MultiProcessor Specification v1.4
    Virtual Wire compatibility mode.
OEM ID: COMPAQ   Product ID: Workstation  APIC at: 0xFEE00000
I/O APIC #8 Version 17 at 0xFEC00000.
Enabling APIC mode:  Flat.  Using 1 I/O APICs
Processors: 2
Allocating PCI resources starting at 10000000 (gap: 08000000:f6c00000)
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
Kernel command line: root=/dev/sdb1 acpi=noirq scsi_mod.scan=sync netconsole=@172.29.21.102/eth0,6670@172.29.21.101/00:13:3B:00:01:AD
mapped APIC to ffffb000 (fee00000)
mapped IOAPIC to ffffa000 (fec00000)
Enabling fast FPU save and restore... done.
Initializing CPU#0
Preemptible RCU implementation.
PID hash table entries: 512 (order: 9, 2048 bytes)
Detected 399.077 MHz processor.
Console: colour VGA+ 80x25
console [tty0] enabled
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 125924k/131072k available (2103k kernel code, 4680k reserved, 755k data, 304k init, 0k highmem)
virtual kernel memory layout:
    fixmap  : 0xfffb5000 - 0xfffff000   ( 296 kB)
    vmalloc : 0xc8800000 - 0xfffb3000   ( 887 MB)
    lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
      .init : 0xc03d1000 - 0xc041d000   ( 304 kB)
      .data : 0xc030dd4a - 0xc03ca970   ( 755 kB)
      .text : 0xc0100000 - 0xc030dd4a   (2103 kB)
Checking if this processor honours the WP bit even in supervisor mode...Ok.
CPA: page pool initialized 1 of 1 pages preallocated
SLUB: Genslabs=12, HWalign=32, Order=0-1, MinObjects=4, CPUs=2, Nodes=1
Calibrating delay using timer specific routine.. 799.35 BogoMIPS (lpj=3996764)
Mount-cache hash table entries: 512
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 512K
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
Compat vDSO mapped to ffffe000.
Checking 'hlt' instruction... OK.
ACPI: Core revision 20070126
ACPI: setting ELCR to 0a00 (from 0800)
CPU0: Intel Pentium II (Deschutes) stepping 02
Booting processor 1/0 ip 2000
Initializing CPU#1
Calibrating delay using timer specific routine.. 798.19 BogoMIPS (lpj=3990955)
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 512K
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#1.
CPU1: Intel Pentium II (Deschutes) stepping 01
Total of 2 processors activated (1597.54 BogoMIPS).
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1
checking TSC synchronization [CPU#0 -> CPU#1]: passed.
Brought up 2 CPUs
net_namespace: 448 bytes
NET: Registered protocol family 16
EISA bus registered
ACPI: bus type pci registered
PCI: PCI BIOS revision 2.10 entry at 0xe10b4, last bus=1
PCI: Using configuration type 1
Setting up standard PCI resources
mtrr: your CPUs had inconsistent fixed MTRR settings
mtrr: probably your BIOS does not setup all CPUs.
mtrr: corrected configuration.
ACPI: EC: Look up EC in DSDT
ACPI: Interpreter enabled
ACPI: (supports S0 S5)
ACPI: Using PIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
* Found PM-Timer Bug on the chipset. Due to workarounds for a bug,
* this clock source is slow. Consider trying other clock sources
pci 0000:00:14.3: quirk: region f800-f83f claimed by PIIX4 ACPI
pci 0000:00:14.3: quirk: region fc00-fc0f claimed by PIIX4 SMB
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
ACPI: bus type pnp registered
pnp: PnP ACPI: found 14 devices
ACPI: ACPI bus type pnp unregistered
PnPBIOS: Disabled by ACPI PNP
SCSI subsystem initialized
PCI: Probing PCI hardware
PCI: Using IRQ router PIIX/ICH [8086/7110] at 0000:00:14.0
PCI->APIC IRQ transform: 0000:00:0b.0[A] -> IRQ 21
PCI->APIC IRQ transform: 0000:00:0c.0[A] -> IRQ 20
PCI->APIC IRQ transform: 0000:00:0d.0[B] -> IRQ 18
PCI->APIC IRQ transform: 0000:00:0d.1[C] -> IRQ 19
PCI->APIC IRQ transform: 0000:00:0d.2[D] -> IRQ 16
PCI->APIC IRQ transform: 0000:00:0d.3[A] -> IRQ 17
PCI->APIC IRQ transform: 0000:00:0e.0[A] -> IRQ 19
PCI->APIC IRQ transform: 0000:00:0f.0[A] -> IRQ 18
PCI->APIC IRQ transform: 0000:00:0f.1[A] -> IRQ 18
PCI->APIC IRQ transform: 0000:00:10.0[A] -> IRQ 16
PCI: using PPB 0000:00:01.0[A] to get irq 22
PCI->APIC IRQ transform: 0000:01:00.0[A] -> IRQ 22
ACPI: RTC can wake from S4
system 00:0b: iomem range 0x0-0x9ffff could not be reserved
system 00:0b: iomem range 0xe0000-0xfffff could not be reserved
system 00:0b: iomem range 0x100000-0xffffff could not be reserved
system 00:0b: iomem range 0xfffc0000-0xffffffff could not be reserved
system 00:0c: ioport range 0x15c-0x15d has been reserved
system 00:0c: ioport range 0x4d0-0x4d1 has been reserved
system 00:0c: ioport range 0x77e-0x77f has been reserved
system 00:0c: ioport range 0xc06-0xc07 has been reserved
system 00:0c: ioport range 0xc50-0xc51 has been reserved
system 00:0c: ioport range 0xc70-0xc77 has been reserved
system 00:0c: ioport range 0xc82-0xc82 has been reserved
system 00:0d: ioport range 0xf800-0xf81f has been reserved
system 00:0d: ioport range 0xf820-0xf83f has been reserved
system 00:0d: ioport range 0xfc00-0xfc0f has been reserved
PCI: Bridge: 0000:00:01.0
  IO window: disabled.
  MEM window: 0x50000000-0x510fffff
  PREFETCH window: disabled.
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
pci 0000:00:00.0: Limiting direct PCI/PCI transfers
pci 0000:00:0c.0: Firmware left e100 interrupts enabled; disabling
pci 0000:01:00.0: Boot video device
input: Power Button (CM) as /class/input/input0
ACPI: Power Button (CM) [PBTN]
isapnp: Scanning for PnP cards...
isapnp: Card 'ESS ES1869 Plug and Play AudioDrive'
isapnp: 1 Plug & Play card detected total
Switched to high resolution mode on CPU 1
Switched to high resolution mode on CPU 0
Serial: 8250/16550 driver $Revision: 1.90 $ 2 ports, IRQ sharing disabled
serial 00:08: activated
00:08: ttyS0 at I/O 0x3e8 (irq = 4) is a 16550A
serial 00:09: activated
00:09: ttyS1 at I/O 0x2e8 (irq = 3) is a NS16550A
e100: Intel(R) PRO/100 Network Driver, 3.5.23-k4-NAPI
e100: Copyright(c) 1999-2006 Intel Corporation
e100: eth0: e100_probe: addr 0x51900000, irq 20, MAC addr 00:08:c7:82:82:3c
netconsole: local port 6665
netconsole: local IP 172.29.21.102
netconsole: interface eth0
netconsole: remote port 6670
netconsole: remote IP 172.29.21.101
netconsole: remote ethernet address 00:13:3b:00:01:ad
netconsole: device eth0 not up yet, forcing it
e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex
netconsole: timeout waiting for carrier
console [netcon0] enabled
netconsole: network logging started
Uniform Multi-Platform E-IDE driver
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller (0x8086:0x7111 rev 0x01) at  PCI slot 0000:00:14.1
PIIX4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0x58c0-0x58c7, BIOS settings: hda:PIO, hdb:PIO
    ide1: BM-DMA at 0x58c8-0x58cf, BIOS settings: hdc:PIO, hdd:PIO
Probing IDE interface ide0...
Probing IDE interface ide1...
Probing IDE interface ide0...
Probing IDE interface ide1...
sym0: <875> rev 0x4 at pci 0000:00:0b.0 irq 21
sym0: No NVRAM, ID 7, Fast-20, SE, parity checking
sym0: SCSI BUS has been reset.
scsi0 : sym-2.2.3
scsi 0:0:0:0: Direct-Access     COMPAQ   DDRS-34560W      S97A PQ: 0 ANSI: 2
 target0:0:0: tagged command queuing enabled, command queue depth 16.
 target0:0:0: Beginning Domain Validation
 target0:0:0: asynchronous
 target0:0:0: wide asynchronous
 target0:0:0: FAST-20 WIDE SCSI 40.0 MB/s ST (50 ns, offset 15)
 target0:0:0: Domain Validation skipping write tests
 target0:0:0: Ending Domain Validation
scsi 0:0:8:0: Direct-Access     QUANTUM  VIKING II 4.5WSE 4110 PQ: 0 ANSI: 2
 target0:0:8: tagged command queuing enabled, command queue depth 16.
 target0:0:8: Beginning Domain Validation
 target0:0:8: asynchronous
 target0:0:8: wide asynchronous
 target0:0:8: FAST-20 WIDE SCSI 40.0 MB/s ST (50 ns, offset 16)
 target0:0:8: Domain Validation skipping write tests
 target0:0:8: Ending Domain Validation
Driver 'sd' needs updating - please use bus_type methods
sd 0:0:0:0: [sda] 8386000 512-byte hardware sectors (4294 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: b9 00 00 08
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sd 0:0:0:0: [sda] 8386000 512-byte hardware sectors (4294 MB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: b9 00 00 08
sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
 sda: sda1 sda2 sda3 sda4
sd 0:0:0:0: [sda] Attached SCSI disk
sd 0:0:8:0: [sdb] 8910423 512-byte hardware sectors (4562 MB)
sd 0:0:8:0: [sdb] Write Protect is off
sd 0:0:8:0: [sdb] Mode Sense: d9 00 00 08
sd 0:0:8:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sd 0:0:8:0: [sdb] 8910423 512-byte hardware sectors (4562 MB)
sd 0:0:8:0: [sdb] Write Protect is off
sd 0:0:8:0: [sdb] Mode Sense: d9 00 00 08
sd 0:0:8:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
 sdb: sdb1
sd 0:0:8:0: [sdb] Attached SCSI disk
PNP: PS/2 Controller [PNP0303:KBD,PNP0f0e:PS2M] at 0x60,0x64 irq 1,12
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
mice: PS/2 mouse device common for all mice
input: AT Translated Set 2 keyboard as /class/input/input1
rtc_cmos 00:03: rtc core: registered rtc_cmos as rtc0
rtc0: alarms up to one year, y3k
EISA: Probing bus 0 at eisa.0
EISA: Cannot allocate resource for mainboard
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
Using IPI No-Shortcut mode
rtc_cmos 00:03: hctosys: invalid date/time
input: PS/2 Logitech Mouse as /class/input/input2
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 304k freed
kjournald starting.  Commit interval 5 seconds
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver
ohci_hcd 0000:00:0d.0: OHCI Host Controller
ohci_hcd 0000:00:0d.0: new USB bus registered, assigned bus number 1
ohci_hcd 0000:00:0d.0: irq 18, io mem 0x51300000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
ohci_hcd 0000:00:0d.1: OHCI Host Controller
ohci_hcd 0000:00:0d.1: new USB bus registered, assigned bus number 2
ohci_hcd 0000:00:0d.1: irq 19, io mem 0x51400000
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
DC390: clustering now enabled by default. If you get problems load
	with "disable_clustering=1" and report to maintainers
ohci_hcd 0000:00:0d.2: OHCI Host Controller
ohci_hcd 0000:00:0d.2: new USB bus registered, assigned bus number 3
ohci_hcd 0000:00:0d.2: irq 16, io mem 0x51500000
USB Universal Host Controller Interface driver v3.0
usb usb3: configuration #1 chosen from 1 choice
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
input: PC Speaker as /class/input/input3
dc395x: Tekram DC395(U/UW/F), DC315(U) - ASIC TRM-S1040 v2.05, 2004/03/08
Uhhuh. NMI received for unknown reason a1 on CPU 0.
You have some hardware problem, likely on the PCI bus.
Dazed and confused, but trying to continue
FDC 0 is a National Semiconductor PC87306
usb 3-2: new full speed USB device using ohci_hcd and address 2
parport_pc 00:07: activated
parport_pc 00:07: reported by Plug and Play ACPI
parport0: PC-style at 0x378 (0x778), irq 5 [PCSPP(,...)]
usb 3-2: configuration #1 chosen from 1 choice
hub 3-2:1.0: USB hub found
hub 3-2:1.0: 4 ports detected
dc395x: Used settings: AdapterID=07, Speed=0(20.0MHz), dev_mode=0x77
dc395x:                AdaptMode=0x0f, Tags=4(16), DelayReset=1s
dc395x: Connectors: ext50  Termination: Auto Low High 
dc395x: Performing initial SCSI bus reset
scsi1 : Tekram DC395(U/UW/F), DC315(U) - ASIC TRM-S1040 v2.05, 2004/03/08
Linux video capture interface: v2.00
bttv: driver version 0.9.17 loaded
bttv: using 8 buffers with 2080k (520 pages) each for capture
bttv: Host bridge needs ETBF enabled.
usb 3-2.3: new low speed USB device using ohci_hcd and address 3
usb 3-2.3: configuration #1 chosen from 1 choice
usb 3-2.4: new low speed USB device using ohci_hcd and address 4
usb 3-2.4: configuration #1 chosen from 1 choice
input: HID 062a:0000 as /class/input/input4
es18xx-pnpbios 01:01.01: activated
es18xx-pnpbios 01:01.01: disabled
es18xx-pnpbios: probe of 01:01.01 failed with error -2
es18xx 01:01.00: activated
es18xx 01:01.01: activated
input: USB HID v1.10 Mouse [HID 062a:0000] on usb-0000:00:0d.2-2.3
input: BTC USB Multimedia Keyboard as /class/input/input5
input: USB HID v1.10 Keyboard [BTC USB Multimedia Keyboard] on usb-0000:00:0d.2-2.4
input: BTC USB Multimedia Keyboard as /class/input/input6
input: USB HID v1.10 Device [BTC USB Multimedia Keyboard] on usb-0000:00:0d.2-2.4
usbcore: registered new interface driver usbhid
drivers/hid/usbhid/hid-core.c: v2.6:USB HID core driver
scsi2 : Tekram DC390/AM53C974 V2.1d 2004-05-27
scsi 2:0:1:0: CD-ROM            PIONEER  DVD-ROM DVD-305  1.05 PQ: 0 ANSI: 2
scsi 2:0:5:0: Sequential-Access HP       C1533A           A708 PQ: 0 ANSI: 2
uhci_hcd 0000:00:14.2: UHCI Host Controller
uhci_hcd 0000:00:14.2: new USB bus registered, assigned bus number 4
uhci_hcd 0000:00:14.2: irq 11, io base 0x000058a0
usb usb4: configuration #1 chosen from 1 choice
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 2 ports detected
piix4_smbus 0000:00:14.3: Found 0000:00:14.3 device
bttv: Bt8xx card found (0).
bttv0: Bt878 (rev 17) at 0000:00:0f.0, irq: 18, latency: 66, mmio: 0x51a00000
bttv0: detected: Hauppauge WinTV [card=10], PCI subsystem ID is 0070:13eb
bttv0: using: Hauppauge (bt878) [card=10,autodetected]
bttv0: enabling ETBF (430FX/VP3 compatibilty)
bttv0: gpio: en=00000000, out=00000000 in=00ffffdb [init]
bttv0: Hauppauge/Voodoo msp34xx: reset line init [5]
tveeprom 1-0050: Hauppauge model 44804, rev D148, serial# 6989715
tveeprom 1-0050: tuner model is LG TP18PSB11D (idx 48, type 29)
tveeprom 1-0050: TV standards PAL(B/G) (eeprom 0x04)
tveeprom 1-0050: audio processor is None (idx 0)
tveeprom 1-0050: has no radio
bttv0: Hauppauge eeprom indicates model#44804
bttv0: tuner type=29
bttv0: i2c: checking for MSP34xx @ 0x80... not found
bttv0: i2c: checking for TDA9875 @ 0xb0... not found
bttv0: i2c: checking for TDA7432 @ 0x8a... not found
Driver 'sr' needs updating - please use bus_type methods
DC390: Target 1: Sync transfer 10.0 MHz, Offset 15
sr0: scsi3-mmc drive: 16x/40x cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
sr 2:0:1:0: Attached scsi CD-ROM sr0
sd 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:8:0: Attached scsi generic sg1 type 0
sr 2:0:1:0: Attached scsi generic sg2 type 5
scsi 2:0:5:0: Attached scsi generic sg3 type 1
tuner' 1-0061: chip found @ 0xc2 (bt878 #0 [sw])
tuner-simple 1-0061: type set to 29 (LG PAL_BG (TPI8PSB11D))
bttv0: registered device video0
bttv0: registered device vbi0
bttv0: PLL: 28636363 => 35468950 .. ok
ehci_hcd 0000:00:0d.3: EHCI Host Controller
ehci_hcd 0000:00:0d.3: new USB bus registered, assigned bus number 5
ehci_hcd 0000:00:0d.3: debug port 1
ehci_hcd 0000:00:0d.3: irq 17, io mem 0x51800000
usb 3-2: USB disconnect, address 2
usb 3-2.3: USB disconnect, address 3
ehci_hcd 0000:00:0d.3: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb5: configuration #1 chosen from 1 choice
hub 5-0:1.0: USB hub found
hub 5-0:1.0: 6 ports detected
usb 3-2.4: USB disconnect, address 4
usb 3-2: new full speed USB device using ohci_hcd and address 5
usb 3-2: configuration #1 chosen from 1 choice
hub 3-2:1.0: USB hub found
hub 3-2:1.0: 4 ports detected
Adding 248996k swap on /dev/sda2.  Priority:-1 extents:1 across:248996k
usb 3-2.3: new low speed USB device using ohci_hcd and address 6
usb 3-2.3: configuration #1 chosen from 1 choice
input: HID 062a:0000 as /class/input/input7
input: USB HID v1.10 Mouse [HID 062a:0000] on usb-0000:00:0d.2-2.3
usb 3-2.4: new low speed USB device using ohci_hcd and address 7
EXT3 FS on sdb1, internal journal
usb 3-2.4: configuration #1 chosen from 1 choice
input: BTC USB Multimedia Keyboard as /class/input/input8
input: USB HID v1.10 Keyboard [BTC USB Multimedia Keyboard] on usb-0000:00:0d.2-2.4
input: BTC USB Multimedia Keyboard as /class/input/input9
input: USB HID v1.10 Device [BTC USB Multimedia Keyboard] on usb-0000:00:0d.2-2.4
ip_tables: (C) 2000-2006 Netfilter Core Team
nf_conntrack version 0.5.0 (2048 buckets, 8192 max)
lp0: using parport0 (interrupt-driven).
lp0: console ready
ppdev: user-space parallel port driver
DC390: Target 5: Sync transfer 10.0 MHz, Offset 15

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: What's the right value for idle= (was: Re: [linux-pm] regression on P-II SMP)
  2010-02-21 20:36 ` What's the right value for idle= (was: Re: [linux-pm] regression on P-II SMP) Rafael J. Wysocki
  2010-02-21 21:02   ` Pallipadi, Venkatesh
@ 2010-02-21 21:11   ` Arjan van de Ven
  2010-02-22 21:50     ` Guennadi Liakhovetski
  1 sibling, 1 reply; 5+ messages in thread
From: Arjan van de Ven @ 2010-02-21 21:11 UTC (permalink / raw)
  To: Rafael J. Wysocki
  Cc: Guennadi Liakhovetski, linux-pm, LKML, ACPI Devel Maling List,
	Venki Pallipadi, Len Brown

On Sun, 21 Feb 2010 21:36:03 +0100
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:

> On Sunday 21 February 2010, Guennadi Liakhovetski wrote:
> > Hi
> > 
> > my 2xP-II@400MHz locks up with 2.6.32(.X) unless I specify "idle=*"
> > on the kernel command-line, where "*" is one of "poll," "mwait,"
> > "halt," and only "nomwait" indeed locks it up. Last kernel known to
> > work was 2.6.25. So, it doesn't bother me all that much - I have a
> > way to boot it, but maybe someone would be interested to fix this
> > (this system already has a few quirks on the kernel command line,
> > so, one more doesn't really hurt;)). What interests me more - which
> > of those shall I be using? From Documentation/kernel-parameters.txt
> > it looks like "mwait" should be best for me? Or should I be using
> > "halt?" "Poll" does indeed fry CPUs - raises sys temperatures to
> > 50 / 60 degrees C. Power-saving is not that much of a concern for
> > me - I only run that system occasionally, but it shouldn't produce
> > more heat than it must;) And since this system does have a broken
> > ACPI (Compaq AP400), I wouldn't try to be too smart with it.
> 
> I guess "mwait" is the right one, but let's try to ask experts.

can you get us /proc/cpuinfo ?
(only one of the cpus, the other ones are just duplicates)

if the CPU advertizes mwait, we normally ought to use it,
but there's some exceptions to that due to buggy-as-**** bioses.

can you also run powertop -d and get that output ?
(preferably on a fully known working kernel)


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org

^ permalink raw reply	[flat|nested] 5+ messages in thread

* Re: What's the right value for idle= (was: Re: [linux-pm] regression on P-II SMP)
  2010-02-21 21:11   ` Arjan van de Ven
@ 2010-02-22 21:50     ` Guennadi Liakhovetski
  0 siblings, 0 replies; 5+ messages in thread
From: Guennadi Liakhovetski @ 2010-02-22 21:50 UTC (permalink / raw)
  To: Arjan van de Ven
  Cc: Rafael J. Wysocki, linux-pm, LKML, ACPI Devel Maling List,
	Venki Pallipadi, Len Brown

On Sun, 21 Feb 2010, Arjan van de Ven wrote:

> can you get us /proc/cpuinfo ?
> (only one of the cpus, the other ones are just duplicates)

They are a bit different (different stepping):

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 5
model name	: Pentium II (Deschutes)
stepping	: 2
cpu MHz		: 399.077
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr
bogomips	: 799.35
clflush size	: 32

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 5
model name	: Pentium II (Deschutes)
stepping	: 1
cpu MHz		: 399.077
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr
bogomips	: 798.19
clflush size	: 32

> if the CPU advertizes mwait, we normally ought to use it,
> but there's some exceptions to that due to buggy-as-**** bioses.
> 
> can you also run powertop -d and get that output ?
> (preferably on a fully known working kernel)

on 2.6.25 with "root=/dev/sdb1 acpi=noirq scsi_mod.scan=sync netconsole=..." 
kernel command line (dmesg follows in a reply to another mail)

# powertop -d
PowerTOP 1.10    (C) 2007, 2008 Intel Corporation

Collecting data for 15 seconds


< Detailed C-state information is not available.>
P-states (frequencies)
Wakeups-from-idle per second : 40.3     interval: 15.0s
no ACPI power usage estimate available
Top causes for wakeups:
  41.2% ( 26.1)       <interrupt> : ohci_hcd:usb3, tmscsim
  40.2% ( 25.5)       <interrupt> : ohci_hcd:usb1, bttv0
   6.3% (  4.0)   <kernel module> : usb_hcd_poll_rh_status (rh_timer_func)
   3.2% (  2.0)     <kernel core> : clocksource_register (clocksource_watchdog)
   3.2% (  2.0)     <kernel core> : sym_timer (sym53c8xx_timer)
   0.9% (  0.6)       <interrupt> : eth0
   0.8% (  0.5)   hald-addon-stor : schedule_timeout (process_timeout)
   0.8% (  0.5)     <kernel core> : __netdev_watchdog_up (dev_watchdog)
   0.8% (  0.5)     <kernel core> : e100_up (e100_watchdog)
   0.7% (  0.5)     <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer)
   0.3% (  0.2)       <interrupt> : sym53c8xx
   0.3% (  0.2)              init : schedule_timeout (process_timeout)
   0.3% (  0.2)     <kernel core> : page_writeback_init (wb_timer_fn)
   0.3% (  0.2)   hald-addon-acpi : do_nanosleep (hrtimer_wakeup)
   0.1% (  0.1)              sshd : sk_reset_timer (tcp_write_timer)
   0.1% (  0.1)     <kernel core> : neigh_add_timer (neigh_timer_handler)
   0.1% (  0.1)                sh : start_this_handle (commit_timeout)
   0.1% (  0.1)              cron : do_nanosleep (hrtimer_wakeup)
   0.1% (  0.1)           syslogd : do_setitimer (it_real_fn)

A USB device is active  0.0% of the time:
/sys/bus/usb/devices/3-2.3

Suggestion: increase the VM dirty writeback time from 5.00 to 15 seconds 
with:
  echo 1500 > /proc/sys/vm/dirty_writeback_centisecs
This wakes the disk up less frequenty for background VM activity

Suggestion: enable the noatime filesystem option by executing the 
following command:
   mount -o remount,noatime /          or by pressing the T key
noatime disables persistent access time of file accesses, which causes lots of disk IO.

Suggestion: Disable 'hal' from polling your cdrom with:
hal-disable-polling --device /dev/cdrom 'hal' is the component that auto-opens a
window if you plug in a CD but disables SATA power saving from kicking in.

Suggestion: Enable the CONFIG_CPU_FREQ_STAT kernel configuration option.
This option allows PowerTOP to show P-state percentages
P-states correspond to CPU frequencies.

Suggestion: Enable the CONFIG_ACPI_BATTERY kernel configuration option.
 This option is required to get power estimages from PowerTOP

Suggestion: Enable the CONFIG_CPU_FREQ_GOV_ONDEMAND kernel configuration option.
The 'ondemand' CPU speed governor will minimize the CPU power usage while
giving you performance when it is needed.

Suggestion: Enable the CONFIG_USB_SUSPEND kernel configuration option.
This option will automatically disable UHCI USB when not in use, and may
save approximately 1 Watt of power.

Recent USB suspend statistics
Active  Device name
  0.0%  USB device usb5 : EHCI Host Controller (Linux 2.6.25 ehci_hcd)
  0.0%  USB device usb4 : UHCI Host Controller (Linux 2.6.25 uhci_hcd)
  0.0%  USB device 3-2.4 : USB Multimedia Keyboard (BTC)
  0.0%  /sys/bus/usb/devices/3-2.3
  0.0%  USB device  3-2 : Generic USB Hub (ALCOR)
  0.0%  USB device usb3 : OHCI Host Controller (Linux 2.6.25 ohci_hcd)
  0.0%  USB device usb2 : OHCI Host Controller (Linux 2.6.25 ohci_hcd)
  0.0%  USB device usb1 : OHCI Host Controller (Linux 2.6.25 ohci_hcd)

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2010-02-22 21:52 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
     [not found] <Pine.LNX.4.64.1002212117540.9624@axis700.grange>
2010-02-21 20:36 ` What's the right value for idle= (was: Re: [linux-pm] regression on P-II SMP) Rafael J. Wysocki
2010-02-21 21:02   ` Pallipadi, Venkatesh
2010-02-22 21:52     ` Guennadi Liakhovetski
2010-02-21 21:11   ` Arjan van de Ven
2010-02-22 21:50     ` Guennadi Liakhovetski

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