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-   -   trying to determine speed of pci-e 1x vs pci slot (http://www.linuxquestions.org/questions/showthread.php?t=4175433948)

spezticle 10-24-2012 08:48 PM

trying to determine speed of pci-e 1x vs pci slot
 
So I have this old dell dimension computer I use for a server.
It's maxed out with 2gb of ram, clocked at 533mhz
It has onboard video with 8mb of shared video memory
and an onboard 10/100 ethernet port. It also has audio but i have it disabled in the bios.
I'm using this computer as a file and dhcp server for a local network.

It has 2 (and they're both empty) PCI slots and 1 (also empty) pcie 1x slot.
I wanted to get a gigabit card as I do a lot of transferring of very large files to and from the server.

when i called upon lshw to tell me if my pci slots were 32 or 64 bit i noticed that it is telling me that all the slots, even the pci-e are all 32bit 33mhz.

If this is true, then is my pci-e slot limited to 133 megabytes/sec instead of the 500 that i was expecting or am I misunderstanding how the bandwidth is calculated?

anyway, below is the output of lshw:
Code:

computer
    description: Mini Tower Computer
    width: 32 bits
    capabilities: smbios-2.3 dmi-2.3 smp-1.4 smp
    configuration: administrator_password=disabled boot=normal chassis=mini-tower cpus=1 power-on_password=disabled uuid=[REMOVED]
  *-core
      description: Motherboard
      product: 0JC474
      vendor: Winbond Electronics
      physical id: 0
      serial: [REMOVED]
    *-firmware
          description: BIOS
          vendor: Winbond Electronics
          physical id: 0
          version: A04
          date: 04/04/2006
          size: 64KiB
          capacity: 448KiB
          capabilities: pci pnp apm upgrade shadowing cdboot bootselect edd int13floppytoshiba int5printscreen int9keyboard int14serial int17printer acpi usb ls120boot biosbootspecification netboot
    *-cpu
          description: CPU
          product: Intel(R) Pentium(R) 4 CPU 2.80GHz
          vendor: Intel Corp.
          physical id: 400
          bus info: cpu@0
          version: 15.4.1
          serial: [REMOVED]
          slot: Microprocessor
          size: 2800MHz
          capacity: 4GHz
          width: 64 bits
          clock: 800MHz
          capabilities: boot fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx x86-64 constant_tsc pebs bts pni dtes64 monitor ds_cpl cid cx16 xtpr
          configuration: id=0
        *-cache:0
            description: L1 cache
            physical id: 700
            size: 16KiB
            capacity: 16KiB
            capabilities: internal write-back data
        *-cache:1
            description: L2 cache
            physical id: 701
            size: 1MiB
            capacity: 1MiB
            capabilities: internal varies unified
        *-logicalcpu:0
            description: Logical CPU
            physical id: 0.1
            width: 64 bits
            capabilities: logical
        *-logicalcpu:1
            description: Logical CPU
            physical id: 0.2
            width: 64 bits
            capabilities: logical
    *-memory
          description: System Memory
          physical id: 1000
          slot: System board or motherboard
          size: 2GiB
        *-bank:0
            description: DIMM DDR Synchronous 533 MHz (1.9 ns)
            vendor: FFFFFFFFFFFFFFFF
            physical id: 0
            serial: [REMOVED]
            slot: DIMM_1
            size: 1GiB
            width: 64 bits
            clock: 533MHz (1.9ns)
        *-bank:1
            description: DIMM DDR Synchronous 533 MHz (1.9 ns)
            product: 1G-UDIMM
            vendor: Kingston
            physical id: 1
            serial: [REMOVED]
            slot: DIMM_2
            size: 1GiB
            width: 64 bits
            clock: 533MHz (1.9ns)
    *-pci
          description: Host bridge
          product: 82915G/P/GV/GL/PL/910GL Memory Controller Hub
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 04
          width: 32 bits
          clock: 33MHz
          configuration: driver=agpgart-intel
          resources: irq:0
        *-display
            description: VGA compatible controller
            product: 82915G/GV/910GL Integrated Graphics Controller
            vendor: Intel Corporation
            physical id: 2
            bus info: pci@0000:00:02.0
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: pm vga_controller bus_master cap_list rom
            configuration: driver=i915 latency=0
            resources: irq:16 memory:dff80000-dfffffff ioport:ecd8(size=8) memory:c0000000-cfffffff memory:dff40000-dff7ffff
        *-pci:0
            description: PCI bridge
            product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1
            vendor: Intel Corporation
            physical id: 1c
            bus info: pci@0000:00:1c.0
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
            configuration: driver=pcieport
            resources: irq:40 ioport:1000(size=4096) memory:dfe00000-dfefffff ioport:80000000(size=2097152)
        *-pci:1
            description: PCI bridge
            product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2
            vendor: Intel Corporation
            physical id: 1c.1
            bus info: pci@0000:00:1c.1
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
            configuration: driver=pcieport
            resources: irq:41 memory:dfd00000-dfdfffff
        *-usb:0
            description: USB Controller
            product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1
            vendor: Intel Corporation
            physical id: 1d
            bus info: pci@0000:00:1d.0
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: uhci bus_master
            configuration: driver=uhci_hcd latency=0
            resources: irq:21 ioport:ff80(size=32)
        *-usb:1
            description: USB Controller
            product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2
            vendor: Intel Corporation
            physical id: 1d.1
            bus info: pci@0000:00:1d.1
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: uhci bus_master
            configuration: driver=uhci_hcd latency=0
            resources: irq:22 ioport:ff60(size=32)
        *-usb:2
            description: USB Controller
            product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3
            vendor: Intel Corporation
            physical id: 1d.2
            bus info: pci@0000:00:1d.2
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: uhci bus_master
            configuration: driver=uhci_hcd latency=0
            resources: irq:18 ioport:ff40(size=32)
        *-usb:3
            description: USB Controller
            product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4
            vendor: Intel Corporation
            physical id: 1d.3
            bus info: pci@0000:00:1d.3
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: uhci bus_master
            configuration: driver=uhci_hcd latency=0
            resources: irq:23 ioport:ff20(size=32)
        *-usb:4
            description: USB Controller
            product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller
            vendor: Intel Corporation
            physical id: 1d.7
            bus info: pci@0000:00:1d.7
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: pm debug ehci bus_master cap_list
            configuration: driver=ehci_hcd latency=0
            resources: irq:21 memory:ffa80800-ffa80bff
        *-pci:2
            description: PCI bridge
            product: 82801 PCI Bridge
            vendor: Intel Corporation
            physical id: 1e
            bus info: pci@0000:00:1e.0
            version: d4
            width: 32 bits
            clock: 33MHz
            capabilities: pci subtractive_decode bus_master cap_list
            resources: ioport:d000(size=4096) memory:dfc00000-dfcfffff
          *-network
                description: Ethernet interface
                product: 82562ET/EZ/GT/GZ - PRO/100 VE (LOM) Ethernet Controller
                vendor: Intel Corporation
                physical id: 8
                bus info: pci@0000:03:08.0
                logical name: eth1
                version: 04
                serial: [REMOVED]
                size: 100Mbit/s
                capacity: 100Mbit/s
                width: 32 bits
                clock: 33MHz
                capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
                configuration: autonegotiation=on broadcast=yes driver=e100 driverversion=3.5.24-k2-NAPI duplex=full firmware=N/A ip=[REMOVED] latency=64 link=yes maxlatency=56 mingnt=8 multicast=yes port=MII speed=100Mbit/s
                resources: irq:20 memory:dfcff000-dfcfffff ioport:dcc0(size=64)
        *-isa
            description: ISA bridge
            product: 82801FB/FR (ICH6/ICH6R) LPC Interface Bridge
            vendor: Intel Corporation
            physical id: 1f
            bus info: pci@0000:00:1f.0
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: isa bus_master
            configuration: latency=0
        *-ide:0
            description: IDE interface
            product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller
            vendor: Intel Corporation
            physical id: 1f.1
            bus info: pci@0000:00:1f.1
            logical name: scsi0
            version: 04
            width: 32 bits
            clock: 33MHz
            capabilities: ide bus_master emulated
            configuration: driver=ata_piix latency=0
            resources: irq:16 ioport:1f0(size=8) ioport:3f6 ioport:170(size=8) ioport:376 ioport:ffa0(size=16)
          *-cdrom
                description: DVD writer
                product: DVDRW SOHW-1673S
                vendor: LITE-ON
                physical id: 0.0.0
                bus info: scsi@0:0.0.0
                logical name: /dev/cdrom
                logical name: /dev/cdrw
                logical name: /dev/dvd
                logical name: /dev/dvdrw
                logical name: /dev/scd0
                logical name: /dev/sr0
                version: JS05
                capabilities: removable audio cd-r cd-rw dvd dvd-r
                configuration: ansiversion=5 status=nodisc
        *-ide:1
            description: IDE interface
            product: 82801FR/FRW (ICH6R/ICH6RW) SATA Controller
            vendor: Intel Corporation
            physical id: 1f.2
            bus info: pci@0000:00:1f.2
            logical name: scsi2
            version: 04
            width: 32 bits
            clock: 66MHz
            capabilities: ide pm bus_master cap_list emulated
            configuration: driver=ata_piix latency=0
            resources: irq:20 ioport:fe00(size=8) ioport:fe10(size=4) ioport:fe20(size=8) ioport:fe30(size=4) ioport:fea0(size=16) memory:dff3fc00-dff3ffff
          *-disk:0
                description: ATA Disk
                product: WDC WD5000AAKS-0
                vendor: Western Digital
                physical id: 0.0.0
                bus info: scsi@2:0.0.0
                logical name: /dev/sda
                version: 12.0
                serial: [REMOVED]
                size: 465GiB (500GB)
                capabilities: partitioned partitioned:dos
                configuration: ansiversion=5 signature=0007f123
              *-volume:0
                  description: Linux swap volume
                  physical id: 1
                  bus info: scsi@2:0.0.0,1
                  logical name: /dev/sda1
                  version: 1
                  serial: [REMOVED]
                  size: 953MiB
                  capacity: 953MiB
                  capabilities: primary bootable nofs swap initialized
                  configuration: filesystem=swap pagesize=4096
              *-volume:1
                  description: EXT4 volume
                  vendor: Linux
                  physical id: 2
                  bus info: scsi@2:0.0.0,2
                  logical name: /dev/sda2
                  logical name: /home/pub
                  version: 1.0
                  serial: [REMOVED]
                  size: 464GiB
                  capacity: 464GiB
                  capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
                  configuration: created=2012-10-21 19:46:01 filesystem=ext4 label=pub lastmountpoint=/home/pub modified=2012-10-24 19:45:23 mount.fstype=ext4 mount.options=rw,nosuid,nodev,noexec,relatime,barrier=1,data=ordered mounted=2012-10-24 19:45:23 state=mounted
          *-disk:1
                description: ATA Disk
                product: ST380811AS
                vendor: Seagate
                physical id: 0.1.0
                bus info: scsi@2:0.1.0
                logical name: /dev/sdb
                version: 3.AA
                serial: [REMOVED]
                size: 74GiB (80GB)
                capabilities: partitioned partitioned:dos
                configuration: ansiversion=5 signature=000b0fca
              *-volume:0
                  description: Linux swap volume
                  physical id: 1
                  bus info: scsi@2:0.1.0,1
                  logical name: /dev/sdb1
                  version: 1
                  serial: [REMOVED]
                  size: 953MiB
                  capacity: 953MiB
                  capabilities: primary nofs swap initialized
                  configuration: filesystem=swap pagesize=4096
              *-volume:1
                  description: EXT4 volume
                  vendor: Linux
                  physical id: 2
                  bus info: scsi@2:0.1.0,2
                  logical name: /dev/sdb2
                  logical name: /
                  version: 1.0
                  serial: [REMOVED]
                  size: 27GiB
                  capacity: 27GiB
                  capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
                  configuration: created=2012-10-21 19:46:07 filesystem=ext4 label=slash lastmountpoint=/ modified=2012-10-21 23:46:15 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,barrier=1,data=ordered mounted=2012-10-24 19:45:21 state=mounted
              *-volume:2
                  description: EXT4 volume
                  vendor: Linux
                  physical id: 3
                  bus info: scsi@2:0.1.0,3
                  logical name: /dev/sdb3
                  logical name: /home
                  version: 1.0
                  serial: [REMOVED]
                  size: 45GiB
                  capacity: 45GiB
                  capabilities: primary journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
                  configuration: created=2012-10-21 19:46:12 filesystem=ext4 label=home lastmountpoint=/home modified=2012-10-24 19:45:22 mount.fstype=ext4 mount.options=rw,nodev,relatime,barrier=1,data=ordered mounted=2012-10-24 19:45:22 state=mounted
        *-serial UNCLAIMED
            description: SMBus
            product: 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller
            vendor: Intel Corporation
            physical id: 1f.3
            bus info: pci@0000:00:1f.3
            version: 04
            width: 32 bits
            clock: 33MHz
            configuration: latency=0
            resources: ioport:ece0(size=32)
  *-network
      description: Wireless interface
      physical id: 1
      bus info: usb@1:4
      logical name: wlan0
      serial: [REMOVED]
      capabilities: ethernet physical wireless
      configuration: broadcast=yes driver=rt2800usb driverversion=2.6.38-16-generic firmware=0.12 ip=[REMOVED] link=yes multicast=yes wireless=IEEE 802.11bgn

Here is lspci
Code:

00:00.0 Host bridge: Intel Corporation 82915G/P/GV/GL/PL/910GL Memory Controller Hub (rev 04)
00:02.0 VGA compatible controller: Intel Corporation 82915G/GV/910GL Integrated Graphics Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 (rev 04)
00:1c.1 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2 (rev 04)
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 04)
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 04)
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 04)
00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 (rev 04)
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 04)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d4)
00:1f.0 ISA bridge: Intel Corporation 82801FB/FR (ICH6/ICH6R) LPC Interface Bridge (rev 04)
00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 04)
00:1f.2 IDE interface: Intel Corporation 82801FR/FRW (ICH6R/ICH6RW) SATA Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 04)
03:08.0 Ethernet controller: Intel Corporation 82562ET/EZ/GT/GZ - PRO/100 VE (LOM) Ethernet Controller (rev 04)


business_kid 10-25-2012 10:32 AM

AGP got up to 8X and the pcie was supposed to be better, so 33Mhz is surprising.

IIRC if you have a card in it with a 5V rail, it will default to 33 Mhz. At 3.3, it does 66Mhz. For 100Mhz & higher, you need lower voltages.

cascade9 10-26-2012 12:28 AM

You cant trust the lshw 32bit 33MHz output, its not true (and I forget the technical reason for that now).

If you got gigabit, you are still limited to 125MB/sec. The bottleneck will be your HDDs, 125MB/sec is faster than your WDC WD5000AAKS will ever get in 'the real world', and most of the time the HDD will be a lot slower.

BTW, your motherboard chipset (Intel 915GV) is PCIe 1.1, not 2.0/2.1, so it is a 250MB/sec slot, not 500.

http://ark.intel.com/products/27734/...ory-Controller

Also, the 910/915 chipsethave been know to have problems with PCIe.

business_kid 10-27-2012 03:55 AM

@cascade9: Remind me to run any future purchases past your eagle eyes :-D. I'm sure you'd have talked me out of this laptop I have here.

cascade9 10-29-2012 04:45 AM

Thanks for the compliment business_kid. :D I dont know how good I am at talking people out of stuff though...

business_kid 10-29-2012 05:07 AM

I got this(cheap) in 2008 and then found out the hard way The RS690 is a piece of crap as a video chip. The chipset (AMD RS690/SB600) is congenitally incapable of 64 bit DMA in a 64 bit box. The video aperture was up above 4G and kernels would say "That's ridiculous. I'll ignore that and make one here." so it used twice the space for video. I have waited until Slackware-14.0 for the video drivers to catch up so movement onscreen keeps up with sound and is not jerky. I watched a documentary last night on an external hd monitor @ 1920x1080 and video kept up. That's a first for me from this.
How much of that would you have spotted back in 2008?

cascade9 10-30-2012 03:53 AM

I'm not sure how much of that I would have picked up in 2008. About all I can say for sure it that I probably would have warned you away from ATI chipsets...they werent that great IMO.


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