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Date: Tue, 27 Jan 2009 02:50:42 +0100
From: Paweł Staszewski <pstaszewski@...are.pl>
To: "Brandeburg, Jesse" <jesse.brandeburg@...el.com>
CC: Linux Network Development list <netdev@...r.kernel.org>,
"Sosnowski, Maciej" <maciej.sosnowski@...el.com>,
"e1000-devel@...ts.sourceforge.net"
<e1000-devel@...ts.sourceforge.net>
Subject: Re: DCA/IOAT problem
Brandeburg, Jesse pisze:
> Forwarding entire message to include e1000-devel
>
> Pawel Staszewski wrote:
>
>> Hello
>>
>> Some lspci:
>> lspci
>> 00:00.0 Host bridge: Intel Corporation Memory Controller Hub (rev 90)
>> 00:02.0 PCI bridge: Intel Corporation PCI Express x8 Port 2-3 (rev 90)
>> 00:04.0 PCI bridge: Intel Corporation PCI Express x16 Port 4-7 (rev
>> 90) 00:08.0 System peripheral: Intel Corporation DMA Engine (rev 90)
>> 00:10.0 Host bridge: Intel Corporation FSB Registers (rev 90)
>> 00:10.1 Host bridge: Intel Corporation FSB Registers (rev 90)
>> 00:10.2 Host bridge: Intel Corporation FSB Registers (rev 90)
>> 00:11.0 Host bridge: Intel Corporation Reserved Registers (rev 90)
>> 00:13.0 Host bridge: Intel Corporation Reserved Registers (rev 90)
>> 00:15.0 Host bridge: Intel Corporation DDR Channel 0 Registers (rev
>> 90) 00:16.0 Host bridge: Intel Corporation DDR Channel 1 Registers
>> (rev 90) 00:1a.0 USB Controller: Intel Corporation USB UHCI
>> Controller #4 (rev 02) 00:1a.7 USB Controller: Intel Corporation USB2
>> EHCI Controller #2 (rev 02) 00:1c.0 PCI bridge: Intel Corporation PCI
>> Express Port 1 (rev 02) 00:1c.4 PCI bridge: Intel Corporation PCI
>> Express Port 5 (rev 02) 00:1c.5 PCI bridge: Intel Corporation PCI
>> Express Port 6 (rev 02) 00:1d.0 USB Controller: Intel Corporation USB
>> UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation
>> USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel
>> Corporation USB UHCI Controller #3 (rev 02) 00:1d.7 USB Controller:
>> Intel Corporation USB2 EHCI Controller #1 (rev 02) 00:1e.0 PCI
>> bridge: Intel Corporation 82801 PCI Bridge (rev 92) 00:1f.0 ISA
>> bridge: Intel Corporation LPC Interface Controller (rev 02) 00:1f.2
>> IDE interface: Intel Corporation 4 port SATA IDE Controller (rev 02)
>> 00:1f.3 SMBus: Intel Corporation SMBus Controller (rev 02) 00:1f.5
>> IDE interface: Intel Corporation 2 port SATA IDE Controller (rev 02)
>> 01:00.0 Ethernet controller: Intel Corporation Device 10dd (rev 01)
>> 04:00.0 Ethernet controller: Intel Corporation 82573E Gigabit
>> Ethernet Controller (Copper) (rev 03) 05:00.0 Ethernet controller:
>> Intel Corporation 82573L Gigabit Ethernet Controller
>> 06:01.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev
>> 02)
>> and then:
>> modprobe ioatdma
>>
>> dmesg:
>> ...
>> ...
>> IPv4 FIB: Using LC-trie version 0.408
>> e1000e 0000:04:00.0: irq 1274 for MSI/MSI-X
>> e1000e 0000:04:00.0: irq 1274 for MSI/MSI-X
>> e1000e 0000:05:00.0: irq 1273 for MSI/MSI-X
>> e1000e 0000:05:00.0: irq 1273 for MSI/MSI-X
>> 0000:05:00.0: eth1: Link is Up 1000 Mbps Full Duplex, Flow Control:
>> RX/TX dca service started, version 1.4
>> ioatdma 0000:00:08.0: can't find IRQ for PCI INT A; probably buggy MP
>> table ioatdma 0000:00:08.0: setting latency timer to 64
>> ioatdma 0000:00:08.0: Intel(R) I/OAT DMA Engine found, 4 channels,
>> device version 0x12, driver version 3.30
>> ioatdma 0000:00:08.0: irq 1255 for MSI/MSI-X
>> ioatdma 0000:00:08.0: DCA is disabled in BIOS
>> ixgbe: eth2: ixgbe_watchdog_task: NIC Link is Up 10 Gbps, Flow
>> Control: None e1000e 0000:04:00.0: irq 1274 for MSI/MSI-X
>> e1000e 0000:04:00.0: irq 1274 for MSI/MSI-X
>>
>> ...
>> ...
>>
>>
>> lspvi -vvv (for dma engine)
>> 00:08.0 System peripheral: Intel Corporation DMA Engine (rev 90)
>> Subsystem: Super Micro Computer Inc Device de80
>> Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
>> ParErr- Stepping- SERR- FastB2B- DisINTx+
>> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
>> <TAbort- <MAbort- >SERR- <PERR- INTx-
>> Latency: 0
>> Interrupt: pin A routed to IRQ 1255
>> Region 0: Memory at fe700000 (64-bit, non-prefetchable)
>> [size=1K] Capabilities: [50] Power Management version 2
>> Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
>> PME(D0+,D1-,D2-,D3hot+,D3cold+)
>> Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>> Capabilities: [58] Message Signalled Interrupts: Mask- 64bit-
>> Queue=0/0 Enable+
>> Address: feeff00c Data: 41b2
>> Capabilities: [6c] Express (v1) Root Complex Integrated
>> Endpoint, MSI 00
>> DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s
>> <64ns, L1 <1us
>> ExtTag- RBE- FLReset-
>> DevCtl: Report errors: Correctable- Non-Fatal- Fatal+
>> Unsupported-
>> RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
>> MaxPayload 128 bytes, MaxReadReq 128 bytes
>> DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq-
>> AuxPwr- TransPend-
>> LnkCap: Port #0, Speed unknown, Width x0, ASPM
>> unknown, Latency L0 <64ns, L1 <1us
>> ClockPM- Suprise- LLActRep- BwNot-
>> LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk-
>> ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
>> LnkSta: Speed unknown, Width x0, TrErr- Train-
>> SlotClk- DLActive- BWMgmt- ABWMgmt-
>> Kernel driver in use: ioatdma
>>
>>
>> cat /proc/interrupts
>> CPU0 CPU1 CPU2 CPU3 CPU4
>> CPU5 CPU6 CPU7
>> 0: 81 6 9 7 5
>> 3 9 5 IO-APIC-edge timer
>> 1: 1 0 0 0 1
>> 0 0 0 IO-APIC-edge i8042
>> 2: 0 0 0 0 0
>> 0 0 0 XT-PIC-XT cascade
>> 14: 901 857 867 864 708
>> 674 693 692 IO-APIC-edge ata_piix
>> 15: 686 728 691 703 826
>> 897 876 872 IO-APIC-edge ata_piix
>> 18: 0 0 0 0 0
>> 0 0 0 IO-APIC-fasteoi ata_piix
>> 1255: 1 0 1 0 1
>> 0 1 1 PCI-MSI-edge ioat-msi
>> 1256: 0 0 0 0 0
>> 0 0 0 PCI-MSI-edge eth2:lsc
>> 1257: 857 720 1176 802 960
>> 751 706 841 PCI-MSI-edge eth2:v15-Tx
>> 1258: 958 751 706 841 1176
>> 802 720 859 PCI-MSI-edge eth2:v14-Tx
>> 1259: 1176 802 720 859 706
>> 841 751 958 PCI-MSI-edge eth2:v13-Tx
>> 1260: 706 842 751 959 720
>> 858 802 1175 PCI-MSI-edge eth2:v12-Tx
>> 1261: 720 858 802 1174 751
>> 960 842 706 PCI-MSI-edge eth2:v11-Tx
>> 1262: 751 960 842 706 802
>> 1174 858 720 PCI-MSI-edge eth2:v10-Tx
>> 1263: 802 1174 858 720 842
>> 706 960 751 PCI-MSI-edge eth2:v9-Tx
>> 1264: 842 707 960 751 859
>> 719 1173 802 PCI-MSI-edge eth2:v8-Tx
>> 1265: 814186 813591 813713 814872 814537
>> 816002 812892 814292 PCI-MSI-edge eth2:v7-Rx
>> 1266: 626856 626688 627886 627507 628067
>> 625730 626561 626521 PCI-MSI-edge eth2:v6-Rx
>> 1267: 592474 591312 591741 592107 592214
>> 593218 591271 591386 PCI-MSI-edge eth2:v5-Rx
>> 1268: 558076 559008 557856 558677 557894
>> 556703 557997 558879 PCI-MSI-edge eth2:v4-Rx
>> 1269: 723457 725019 723746 724688 723165
>> 724716 724037 725136 PCI-MSI-edge eth2:v3-Rx
>> 1270: 553387 554096 553204 552603 553078
>> 553587 553838 553769 PCI-MSI-edge eth2:v2-Rx
>> 1271: 603820 605323 605368 602989 604948
>> 604887 606911 604745 PCI-MSI-edge eth2:v1-Rx
>> 1272: 800828 798049 799471 799703 799183
>> 798322 799220 798254 PCI-MSI-edge eth2:v0-Rx
>> 1273: 2868 2894 2970 2808 2863
>> 2803 3167 2860 PCI-MSI-edge eth1
>> 1274: 873 856 882 924 933
>> 904 864 943 PCI-MSI-edge eth0
>> NMI: 0 0 0 0 0
>> 0 0 0 Non-maskable interrupts
>> LOC: 40527 41783 40049 40903 42180
>> 39477 49021 47628 Local timer interrupts
>> RES: 858 58 232 283 89
>> 97 284 435 Rescheduling interrupts
>> CAL: 52 101 99 88 96
>> 93 92 58 Function call interrupts
>> TLB: 143 133 486 452 141
>> 159 396 429 TLB shootdowns
>> SPU: 0 0 0 0 0
>> 0 0 0 Spurious interrupts
>> ERR: 0
>> MIS: 0
>>
>>
>> cat /proc/cpuinfo
>> cat /proc/cpuinfo
>> processor : 0
>> vendor_id : GenuineIntel
>> cpu family : 6
>> model : 23
>> model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
>> stepping : 6
>> cpu MHz : 2999.898
>> cache size : 6144 KB
>> physical id : 0
>> siblings : 4
>> core id : 0
>> cpu cores : 4
>> apicid : 0
>> initial apicid : 0
>> fdiv_bug : no
>> hlt_bug : no
>> f00f_bug : no
>> coma_bug : no
>> fpu : yes
>> fpu_exception : yes
>> cpuid level : 10
>> wp : yes
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx
>> lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>> est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi
>> flexpriority bogomips : 5999.79
>> clflush size : 64
>> power management:
>>
>> processor : 1
>> vendor_id : GenuineIntel
>> cpu family : 6
>> model : 23
>> model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
>> stepping : 6
>> cpu MHz : 2999.898
>> cache size : 6144 KB
>> physical id : 1
>> siblings : 4
>> core id : 0
>> cpu cores : 4
>> apicid : 4
>> initial apicid : 4
>> fdiv_bug : no
>> hlt_bug : no
>> f00f_bug : no
>> coma_bug : no
>> fpu : yes
>> fpu_exception : yes
>> cpuid level : 10
>> wp : yes
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx
>> lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>> est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi
>> flexpriority bogomips : 6065.40
>> clflush size : 64
>> power management:
>>
>> processor : 2
>> vendor_id : GenuineIntel
>> cpu family : 6
>> model : 23
>> model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
>> stepping : 6
>> cpu MHz : 2999.898
>> cache size : 6144 KB
>> physical id : 0
>> siblings : 4
>> core id : 1
>> cpu cores : 4
>> apicid : 1
>> initial apicid : 1
>> fdiv_bug : no
>> hlt_bug : no
>> f00f_bug : no
>> coma_bug : no
>> fpu : yes
>> fpu_exception : yes
>> cpuid level : 10
>> wp : yes
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx
>> lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>> est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi
>> flexpriority bogomips : 6000.46
>> clflush size : 64
>> power management:
>>
>> processor : 3
>> vendor_id : GenuineIntel
>> cpu family : 6
>> model : 23
>> model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
>> stepping : 6
>> cpu MHz : 2999.898
>> cache size : 6144 KB
>> physical id : 1
>> siblings : 4
>> core id : 1
>> cpu cores : 4
>> apicid : 5
>> initial apicid : 5
>> fdiv_bug : no
>> hlt_bug : no
>> f00f_bug : no
>> coma_bug : no
>> fpu : yes
>> fpu_exception : yes
>> cpuid level : 10
>> wp : yes
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx
>> lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>> est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi
>> flexpriority bogomips : 6000.47
>> clflush size : 64
>> power management:
>>
>> processor : 4
>> vendor_id : GenuineIntel
>> cpu family : 6
>> model : 23
>> model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
>> stepping : 6
>> cpu MHz : 2999.898
>> cache size : 6144 KB
>> physical id : 0
>> siblings : 4
>> core id : 2
>> cpu cores : 4
>> apicid : 2
>> initial apicid : 2
>> fdiv_bug : no
>> hlt_bug : no
>> f00f_bug : no
>> coma_bug : no
>> fpu : yes
>> fpu_exception : yes
>> cpuid level : 10
>> wp : yes
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx
>> lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>> est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi
>> flexpriority bogomips : 6000.43
>> clflush size : 64
>> power management:
>>
>> processor : 5
>> vendor_id : GenuineIntel
>> cpu family : 6
>> model : 23
>> model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
>> stepping : 6
>> cpu MHz : 2999.898
>> cache size : 6144 KB
>> physical id : 1
>> siblings : 4
>> core id : 2
>> cpu cores : 4
>> apicid : 6
>> initial apicid : 6
>> fdiv_bug : no
>> hlt_bug : no
>> f00f_bug : no
>> coma_bug : no
>> fpu : yes
>> fpu_exception : yes
>> cpuid level : 10
>> wp : yes
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx
>> lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>> est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi
>> flexpriority bogomips : 6000.50
>> clflush size : 64
>> power management:
>>
>> processor : 6
>> vendor_id : GenuineIntel
>> cpu family : 6
>> model : 23
>> model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
>> stepping : 6
>> cpu MHz : 2999.898
>> cache size : 6144 KB
>> physical id : 0
>> siblings : 4
>> core id : 3
>> cpu cores : 4
>> apicid : 3
>> initial apicid : 3
>> fdiv_bug : no
>> hlt_bug : no
>> f00f_bug : no
>> coma_bug : no
>> fpu : yes
>> fpu_exception : yes
>> cpuid level : 10
>> wp : yes
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx
>> lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>> est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi
>> flexpriority bogomips : 6000.43
>> clflush size : 64
>> power management:
>>
>> processor : 7
>> vendor_id : GenuineIntel
>> cpu family : 6
>> model : 23
>> model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz
>> stepping : 6
>> cpu MHz : 2999.898
>> cache size : 6144 KB
>> physical id : 1
>> siblings : 4
>> core id : 3
>> cpu cores : 4
>> apicid : 7
>> initial apicid : 7
>> fdiv_bug : no
>> hlt_bug : no
>> f00f_bug : no
>> coma_bug : no
>> fpu : yes
>> fpu_exception : yes
>> cpuid level : 10
>> wp : yes
>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx
>> lm constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx
>> est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 lahf_lm tpr_shadow vnmi
>> flexpriority bogomips : 6000.47
>> clflush size : 64
>> power management:
>>
>>
>>
>>
>> I have enabled DCA in my Bios.
>> So why i have info:
>> ioatdma 0000:00:08.0: DCA is disabled in BIOS
>>
>
> Probably because the BIOS is not working correctly or there is a bug in
> dca. Is that a supermicro machine? Can you include the output of
> dmidecode? Are you running the latest BIOS? What are you trying to
> achieve? DCA or IOAT DMA copy offload (two separate features)
>
>
Yes this is an supermicro board X7DCT-10G
http://www.supermicro.com/products/motherboard/Xeon1333/5100/X7DCT-10G.cfm
Bios is no latest but in new bios is no info in changelog about ioat/dca
so i don't update
i want to test / compare DCA over IOAT with my env that is Traffic
management Linux sever
with more than 3Gbit/s traffic and 10k users.
dmidecode:
# dmidecode 2.9
SMBIOS 2.5 present.
39 structures occupying 1950 bytes.
Table at 0xDFF5F000.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Phoenix Technologies LTD
Version: 1.0c
Release Date: 07/10/2008
Address: 0xE5100
Runtime Size: 110336 bytes
ROM Size: 2048 kB
Characteristics:
ISA is supported
PCI is supported
PNP is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
Boot from CD is supported
Selectable boot is supported
BIOS ROM is socketed
EDD is supported
5.25"/1.2 MB floppy services are supported (int 13h)
3.5"/720 KB floppy services are supported (int 13h)
3.5"/2.88 MB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
BIOS boot specification is supported
Targeted content distribution is supported
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: Supermicro
Product Name: X7DCT
Version: 0123456789
Serial Number: 0123456789
UUID: E3D0A497-4663-90E7-895F-003048D333D7
Wake-up Type: Power Switch
SKU Number: Not Specified
Family: Not Specified
Handle 0x0002, DMI type 2, 10 bytes
Base Board Information
Manufacturer: Supermicro
Product Name: X7DCT
Version: PCB Version
Serial Number: 0123456789
Handle 0x0003, DMI type 3, 17 bytes
Chassis Information
Manufacturer: Supermicro
Type: Other
Lock: Not Present
Version: 0123456789
Serial Number: 0123456789
Asset Tag:
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
OEM Information: 0x00001234
Handle 0x0004, DMI type 4, 35 bytes
Processor Information
Socket Designation: LGA771
Type: Central Processor
Family: Xeon
Manufacturer: GenuineIntel
ID: 76 06 01 00 FF FB EB BF
Signature: Type 0, Family 6, Model 23, Stepping 6
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (Fast floating-point save and restore)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Hyper-threading technology)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Xeon(R) CPU X
Voltage: 1.4 V
External Clock: Unknown
Max Speed: 3200 MHz
Current Speed: 3000 MHz
Status: Populated, Enabled
Upgrade: Socket LGA771
L1 Cache Handle: 0x0006
L2 Cache Handle: 0x0007
L3 Cache Handle: Not Provided
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Handle 0x0005, DMI type 4, 35 bytes
Processor Information
Socket Designation: LGA771
Type: Central Processor
Family: Xeon
Manufacturer: GenuineIntel
ID: 76 06 01 00 FF FB EB BF
Signature: Type 0, Family 6, Model 23, Stepping 6
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (Fast floating-point save and restore)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Hyper-threading technology)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Xeon(R) CPU X5
Voltage: 1.4 V
External Clock: Unknown
Max Speed: 3200 MHz
Current Speed: 3000 MHz
Status: Populated, Enabled
Upgrade: Socket LGA771
L1 Cache Handle: 0x0008
L2 Cache Handle: 0x0009
L3 Cache Handle: Not Provided
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Handle 0x0006, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1 Cache
Configuration: Enabled, Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 16 KB
Maximum Size: 16 KB
Supported SRAM Types:
Burst
Pipeline Burst
Asynchronous
Installed SRAM Type: Asynchronous
Speed: Unknown
Error Correction Type: Unknown
System Type: Unknown
Associativity: Unknown
Handle 0x0007, DMI type 7, 19 bytes
Cache Information
Socket Designation: L2 Cache
Configuration: Enabled, Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 12288 KB
Maximum Size: 8192 KB
Supported SRAM Types:
Burst
Pipeline Burst
Asynchronous
Installed SRAM Type: Burst
Speed: Unknown
Error Correction Type: Unknown
System Type: Unknown
Associativity: Unknown
Handle 0x0008, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1 Cache
Configuration: Enabled, Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 16 KB
Maximum Size: 16 KB
Supported SRAM Types:
Burst
Pipeline Burst
Asynchronous
Installed SRAM Type: Asynchronous
Speed: Unknown
Error Correction Type: Unknown
System Type: Unknown
Associativity: Unknown
Handle 0x0009, DMI type 7, 19 bytes
Cache Information
Socket Designation: L2 Cache
Configuration: Enabled, Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 12288 KB
Maximum Size: 8192 KB
Supported SRAM Types:
Burst
Pipeline Burst
Asynchronous
Installed SRAM Type: Burst
Speed: Unknown
Error Correction Type: Unknown
System Type: Unknown
Associativity: Unknown
Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: JCOM1
Internal Connector Type: 9 Pin Dual Inline (pin 10 cut)
External Reference Designator: COM1
External Connector Type: DB-9 male
Port Type: Serial Port 16550A Compatible
Handle 0x000B, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: JCOM2
Internal Connector Type: 9 Pin Dual Inline (pin 10 cut)
External Reference Designator: COM2
External Connector Type: DB-9 male
Port Type: Serial Port 16550A Compatible
Handle 0x000C, DMI type 9, 13 bytes
System Slot Information
Designation: PCIE#1-x16
Type: PCI Express
Current Usage: Available
Length: Other
ID: 1
Characteristics:
3.3 V is provided
Handle 0x000D, DMI type 11, 5 bytes
OEM Strings
String 1: Intel Dempsey/San Clemente/ICH9
String 2: Supermicro motherboard X7DCT
Handle 0x000E, DMI type 12, 5 bytes
System Configuration Options
Option 1: Jumper settings can be described here.
Handle 0x000F, DMI type 15, 29 bytes
System Event Log
Area Length: 192 bytes
Header Start Offset: 0x0000
Header Length: 16 bytes
Data Start Offset: 0x0010
Access Method: General-purpose non-volatile data functions
Access Address: 0x0000
Status: Valid, Not Full
Change Token: 0x0000008D
Header Format: Type 1
Supported Log Type Descriptors: 3
Descriptor 1: POST error
Data Format 1: POST results bitmap
Descriptor 2: Single-bit ECC memory error
Data Format 2: Multiple-event
Descriptor 3: Multi-bit ECC memory error
Data Format 3: Multiple-event
Handle 0x0010, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 64 GB
Error Information Handle: Not Provided
Number Of Devices: 6
Handle 0x0011, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0010
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: CH0_DIMM0
Bank Locator: DIMM 0-1
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns)
Manufacturer: 7F98000000000000
Serial Number: B8CC1345
Asset Tag:
Part Number:
Handle 0x0012, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0010
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: CH1_DIMM0
Bank Locator: DIMM 1-1
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns)
Manufacturer: 7F98000000000000
Serial Number: B8CC0545
Asset Tag:
Part Number:
Handle 0x0013, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0010
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: CH0_DIMM1
Bank Locator: DIMM 0-2
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns)
Manufacturer: 7F98000000000000
Serial Number: BACCFD44
Asset Tag:
Part Number:
Handle 0x0014, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0010
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: CH1_DIMM1
Bank Locator: DIMM 1-2
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns)
Manufacturer: 7F98000000000000
Serial Number: B8CC0845
Asset Tag:
Part Number:
Handle 0x0015, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0010
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: CH0_DIMM2
Bank Locator: DIMM 0-3
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns)
Manufacturer: 7F98000000000000
Serial Number: BACCF444
Asset Tag:
Part Number:
Handle 0x0016, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0010
Error Information Handle: No Error
Total Width: 72 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: DIMM
Set: 1
Locator: CH1_DIMM2
Bank Locator: DIMM 1-3
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz (1.5 ns)
Manufacturer: 7F98000000000000
Serial Number: B8CC1045
Asset Tag:
Part Number:
Handle 0x0017, DMI type 19, 15 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x002FFFFFFFF
Range Size: 12 GB
Physical Array Handle: 0x0010
Partition Width: 0
Handle 0x0018, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x0011
Memory Array Mapped Address Handle: 0x0017
Partition Row Position: Unknown
Interleave Position: Unknown
Interleaved Data Depth: Unknown
Handle 0x0019, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00080000000
Ending Address: 0x000FFFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x0012
Memory Array Mapped Address Handle: 0x0017
Partition Row Position: Unknown
Interleave Position: Unknown
Interleaved Data Depth: Unknown
Handle 0x001A, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00100000000
Ending Address: 0x0017FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x0013
Memory Array Mapped Address Handle: 0x0017
Partition Row Position: Unknown
Interleave Position: Unknown
Interleaved Data Depth: Unknown
Handle 0x001B, DMI type 23, 13 bytes
System Reset
Status: Enabled
Watchdog Timer: Present
Boot Option: Do Not Reboot
Boot Option On Limit: Do Not Reboot
Reset Count: Unknown
Reset Limit: Unknown
Timer Interval: Unknown
Timeout: Unknown
Handle 0x001C, DMI type 24, 5 bytes
Hardware Security
Power-On Password Status: Disabled
Keyboard Password Status: Unknown
Administrator Password Status: Disabled
Front Panel Reset Status: Unknown
Handle 0x001D, DMI type 25, 9 bytes
System Power Controls
Next Scheduled Power-on: 12-31 23:59:59
Handle 0x001E, DMI type 26, 20 bytes
Voltage Probe
Description: Voltage Probe
Location: Processor
Status: OK
Maximum Value: Unknown
Minimum Value: Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00000000
Handle 0x001F, DMI type 27, 12 bytes
Cooling Device
Temperature Probe Handle: 0x0020
Type: Fan
Status: OK
OEM-specific Information: 0x00000000
Handle 0x0020, DMI type 28, 20 bytes
Temperature Probe
Description: Temperature Probe
Location: Processor
Status: OK
Maximum Value: Unknown
Minimum Value Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00000000
Handle 0x0021, DMI type 29, 20 bytes
Electrical Current Probe
Description: Electrical Current Probe
Location: Processor
Status: OK
Maximum Value: Unknown
Minimum Value: Unknown
Resolution: Unknown
Tolerance: Unknown
Accuracy: Unknown
OEM-specific Information: 0x00000000
Handle 0x0022, DMI type 30, 6 bytes
Out-of-band Remote Access
Manufacturer Name: Intel
Inbound Connection: Disabled
Outbound Connection: Enabled
Handle 0x0023, DMI type 32, 19 bytes
System Boot Information
Status: No errors detected
Handle 0x0024, DMI type 38, 18 bytes
IPMI Device Information
Interface Type: Unknown
Specification Version: 1.0
I2C Slave Address: 0x00
NV Storage Device: Not Present
Base Address: 0x0000000000000000 (Memory-mapped)
Register Spacing: Successive Byte Boundaries
Handle 0x0025, DMI type 126, 4 bytes
Inactive
Handle 0x0026, DMI type 127, 4 bytes
End Of Table
>> and:
>> ls -la /sys/class/dca/
>> total 0
>> drwxr-xr-x 2 root root 0 Jan 26 16:21 .
>> drwxr-xr-x 33 root root 0 Jan 26 16:14 ..
>>
>> cat /sys/class/dma/dma0chan0/in_use
>> 0
>> cat /sys/class/dma/dma0chan1/in_use
>> 1
>> cat /sys/class/dma/dma0chan2/in_use
>> 0
>> cat /sys/class/dma/dma0chan3/in_use
>> 0
>>
>>
>> Why DCA is not working (or working but no info about in ioat)
>>
>
> The DMA channels (copy offload) are different than the DCA feature. DCA
> involves front side bus hints sent from the adapter to the CPU handling
> the interrupt, where DMA channels are for copy offload from the processor
> to the independent data movers (DMA channels)
>
>
--
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