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SubjectRe: PROBLEM: Alpha SMP Low Outbound Bandwidth
Hello Jay, 

I see that you are using the tulip driver. Could you try the de4x5 driver??

Best Regards,


--George


On Friday 25 May 2001 17:50, Jay Thorne wrote:
> [1.] One line summary of the problem:
> Kernel 2.4.4 ac15
> Tested with several cards and pieces of software, the outbound bandwidth
> on a quad cpu alpha is 2 megabytes a second or less on a 100 mbit
> switched ethernet network. Other machines on same switch do 10 or more
> megabytes per second. Switch is DLink 3624, 24 port, only 12 ports in
> use.
>
> [2.] Full description of the problem/report:
> Using a quad 400Mhz Dodge/Rawhide machine with Tulip or VIARhine cards,
> on wuFTP, the outbound bandwidth tops out at 2 megabytes per second and
> the inbound at 6 megabytes per second. Also noticeable are apparent
> slowdowns or console lockups/sluggishness during the transfer.
>
> [3.] Keywords (i.e., modules, networking, kernel):
> networking, alpha, tulip, via_rhine
>
> [4.] Kernel version (from /proc/version):
> Linux version 2.4.4-ac15 (root@lister) (gcc version 2.96 20000731 (SuSE
> Linux 7.1/Alpha)) #1 SMP Thu May 24 18:41:13 PDT 2001
>
> [5.] Output of Oops.. message (if applicable) with symbolic information
> resolved (see Documentation/oops-tracing.txt)
>
> [6.] A small shell script or example program which triggers the
> problem (if possible)
>
> Problem machine:
> ncftp /tmp > put foo
> foo: 34.38 MB 5.16
> MB/s
> ncftp /tmp > get -z foo baz
> baz: 34.38 MB 1.16
> MB/s
>
> other machine on same switch to same ftp server.
> ncftp /home/jay > get foo
> foo: 34.38 MB 10.12
> MB/s
> ncftp /home/jay > put -z foo baz
> foo: 34.38 MB 9.93
> MB/s
>
> [7.] Environment
> [7.1.] Software (add the output of the ver_linux script here)
>
> Linux lister 2.4.4-ac15 #1 SMP Thu May 24 18:41:13 PDT 2001 alpha
> unknown
>
> Gnu C 2.96
> Gnu make 3.79.1
> binutils 2.10.0.33
> util-linux 2.10q
> mount 2.10q
> modutils 2.4.2
> e2fsprogs 1.19
> pcmcia-cs 3.1.22
> PPP 2.4.0
> isdn4k-utils 3.1pre1a
> Linux C Library so.6.1
> Dynamic linker (ldd) 2.2
> Procps 2.0.7
> Net-tools 1.57
> Kbd 1.02
> Sh-utils 2.0
> Modules Loaded tulip via-rhine
>
> [7.2.] Processor information (from /proc/cpuinfo):
> lister:/usr/src/linux # cat /proc/cpuinfo
> cpu : Alpha
> cpu model : EV56
> cpu variation : 7
> cpu revision : 0
> cpu serial number :
> system type : Rawhide
> system variation : Dodge
> system revision : 0
> system serial number : NI70904KB0
> cycle frequency [Hz] : 400000000
> timer frequency [Hz] : 1200.00
> page size [bytes] : 8192
> phys. address bits : 40
> max. addr. space # : 127
> BogoMIPS : 738.12
> kernel unaligned acc : 1646246
> (pc=fffffc000042a3d8,va=fffffc005d9b784e)
> user unaligned acc : 0 (pc=0,va=0)
> platform string : AlphaServer 4100 5/400 4MB
> cpus detected : 4
> cpus active : 4
> cpu active mask : 000000000000000f
>
> [7.3.] Module information (from /proc/modules):
> lister:/usr/src/linux # cat /proc/modules
> tulip 59296 1
> via-rhine 16464 0 (autoclean)
>
> [7.4.] Loaded driver and hardware information (/proc/ioports,
> /proc/iomem)
> lister:/usr/src/linux # cat /proc/ioports
> 00000000-0000ffff : PCI IO bus 0
> 00000000-0000001f : dma1
> 00000020-0000003f : pic1
> 00000040-0000005f : timer
> 00000060-0000006f : keyboard
> 00000070-00000080 : rtc
> 00000070-0000007f : rtc
> 000000a0-000000bf : pic2
> 000000c0-000000df : dma2
> 000002f8-000002ff : serial(auto)
> 000003f8-000003ff : serial(auto)
> 00008000-000080ff : VIA Technologies, Inc. Ethernet Controller
> 00008000-000080ff : via-rhine
> 00008400-0000847f : Digital Equipment Corporation DECchip 21140
> [FasterNet]
> 00008400-0000847f : tulip
> 200000000-20000ffff : PCI IO bus 1
> 200008000-2000080ff : Symbios Logic Inc. (formerly NCR) 53c810
> 200008000-20000807f : ncr53c8xx
> 200009000-2000090fe : qlogicisp
> lister:/usr/src/linux # cat /proc/iomem
> 00000000-ffffffff : PCI mem bus 0
> 00000000-07ffffff : HAE0
> 02200000-0223ffff : Digital Equipment Corporation DECchip 21140
> [FasterNet]
> 02240000-0224ffff : S3 Inc. 86c764/765 [Trio32/64/64V+]
> 02250000-0225ffff : VIA Technologies, Inc. Ethernet Controller
> 02260000-022600ff : VIA Technologies, Inc. Ethernet Controller
> 02260000-022600ff : via-rhine
> 02261000-0226107f : Digital Equipment Corporation DECchip 21140
> [FasterNet]
> 02261000-0226107f : tulip
> 200000000-2ffffffff : PCI mem bus 1
> 200000000-207ffffff : HAE0
> 202200000-2022000ff : Symbios Logic Inc. (formerly NCR) 53c810
>
> [7.5.] PCI information ('lspci -vvv' as root)
> lister:/usr/src/linux # lspci -vvv
> 00:01.0 Non-VGA unclassified device: Intel Corporation 82375EB (rev 05)
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr- Stepping- SERR- FastB2B-
> Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32
> Interrupt: pin ? routed to IRQ 32
>
> 00:02.0 VGA compatible controller: S3 Inc. 86c764/765 [Trio32/64/64V+]
> (rev 54) (prog-if 00 [VGA])
> Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop-
> ParErr- Stepping- SERR- FastB2B-
> Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Interrupt: pin A routed to IRQ 16
> Region 0: Memory at 000000000c000000 (32-bit, non-prefetchable)
> Expansion ROM at 0000000002240000 [size=64K]
>
> 00:03.0 Ethernet controller: Digital Equipment Corporation DECchip 21140
> [FasterNet] (rev 22)
> Subsystem: Digital Equipment Corporation: Unknown device 500a
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop-
> ParErr+ Stepping- SERR+ FastB2B-
> Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32 (5000ns min, 10000ns max), cache line size 10
> Interrupt: pin A routed to IRQ 20
> Region 0: I/O ports at 8400 [size=128]
> Region 1: Memory at 0000000002261000 (32-bit, non-prefetchable)
> [size=128]
> Expansion ROM at 0000000002200000 [disabled] [size=256K]
>
> 00:05.0 Ethernet controller: VIA Technologies, Inc. Ethernet Controller
> (rev 42)
> Subsystem: D-Link System Inc: Unknown device 1400
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr+ Stepping+ SERR+ FastB2B-
> Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32 (750ns min, 2000ns max), cache line size 10
> Interrupt: pin A routed to IRQ 28
> Region 0: I/O ports at 8000 [size=256]
> Region 1: Memory at 0000000002260000 (32-bit, non-prefetchable)
> [size=256]
> Expansion ROM at 0000000002250000 [disabled] [size=64K]
> Capabilities: [40] 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-
>
> 01:01.0 SCSI storage controller: Symbios Logic Inc. (formerly NCR)
> 53c810 (rev 02)
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr+ Stepping- SERR+ FastB2B-
> Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32
> Interrupt: pin A routed to IRQ 56
> Region 0: I/O ports at 200008000 [size=256]
> Region 1: Memory at 0000000202200000 (32-bit, non-prefetchable)
> [size=256]
>
> 01:02.0 PCI bridge: Digital Equipment Corporation DECchip 21050 (rev 02)
> (prog-if 00 [Normal decode])
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr- Stepping- SERR- FastB2B-
> Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32, cache line size 10
> Bus: primary=01, secondary=02, subordinate=02, sec-latency=0
> I/O behind bridge: 00009000-00009fff
> Memory behind bridge: 02300000-023fffff
> Prefetchable memory behind bridge: 00100000-000fffff
> BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
>
> 02:00.0 SCSI storage controller: Q Logic ISP1020 (rev 02)
> Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
> ParErr+ Stepping- SERR+ FastB2B-
> Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
> <TAbort- <MAbort- >SERR- <PERR-
> Latency: 32, cache line size 10
> Interrupt: pin A routed to IRQ 40
> Region 0: I/O ports at 200009000 [size=256]
> Region 1: Memory at 0000000202310000 (32-bit, non-prefetchable)
> [size=4K]
> Expansion ROM at 0000000202300000 [disabled] [size=64K]
>
> [7.6.] SCSI information (from /proc/scsi/scsi)
> lister:/usr/src/linux # cat /proc/scsi/scsi
> Attached devices:
> Host: scsi0 Channel: 00 Id: 00 Lun: 00
> Vendor: DEC Model: RZ1CB-CS (C) DEC Rev: 0844
> Type: Direct-Access ANSI SCSI revision: 02
> Host: scsi0 Channel: 00 Id: 01 Lun: 00
> Vendor: DEC Model: RZ1CB-CA (C) DEC Rev: LYJ0
> Type: Direct-Access ANSI SCSI revision: 02
> Host: scsi0 Channel: 00 Id: 02 Lun: 00
> Vendor: DEC Model: RZ1CB-CA (C) DEC Rev: LYJ0
> Type: Direct-Access ANSI SCSI revision: 02
> Host: scsi0 Channel: 00 Id: 03 Lun: 00
> Vendor: DEC Model: RZ1CB-CA (C) DEC Rev: LYJ0
> Type: Direct-Access ANSI SCSI revision: 02
> Host: scsi1 Channel: 00 Id: 05 Lun: 00
> Vendor: DEC Model: RRD45 (C) DEC Rev: 0436
> Type: CD-ROM ANSI SCSI revision: 02
>
> [7.7.] Other information that might be relevant to the problem
> (please look in /proc and include all information that you
> think to be relevant):
>
> There is a tcpdump available. 4.6 megabytes for anyone who wants it.
>
>
>
> [X.] Other notes, patches, fixes, workarounds:
>
> During one of the slowdowns, the console appeared to lock up. holding
> down the ALT key seemed to make it wake up.
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