Re: slow I/O on Dell Poweredge 750

[<Tony_(_at_)_ServaCorp_(_dot_)_com>]

What are the BIOS settings for the disk?
I had to disable something in the BIOS for Linux to even see the drive.

-----Original Message-----
From: owner-misc_(_at_)_openbsd_(_dot_)_org [mailto:owner-misc_(_at_)_openbsd_(_dot_)_org]On Behalf Of
Richard
Sent: Friday, February 18, 2005 10:37 AM
To: misc_(_at_)_openbsd_(_dot_)_org
Subject: slow I/O on Dell Poweredge 750


Hello,

Does anyone have experience with Dell Poweredge? I installed OpenBSD 3.6
release (plus a few patches) on a Dell Poweredge 750 with a SATA 7200rpm
8MB drive, everything works except the I/O is extremely slow. When
copying a bigger file (>50MB) to another filename the speed is only
about 1MB/s. Changing to mount softupdate slightly speed up to less than
2MB/s, but is still far from the expected ~100MB/s. The Dell support
suggests I should have used the Dell OpenManager, but it seems not
working with OpenBSD so I installed OpenBSD directly. Did I miss something?

Thank you very much,

Richard

$ uname -a
OpenBSD mailw2.minghui.org 3.6 GENERIC#0 i386
$ dmesg
OpenBSD 3.6 (GENERIC) #0: Sat Feb 12 16:07:34 EST 2005
:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Pentium(R) 4 CPU 2.80GHz ("GenuineIntel" 686-class) 2.80 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLU
SH,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,PNI,MWAIT,CNXT-ID
real mem = 536195072 (523628K)
avail mem = 482357248 (471052K)
using 4278 buffers containing 26910720 bytes (26280K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 10/22/04, BIOS32 rev. 0 @ 0xffe90
pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfc570/144 (7 entries)
pcibios0: no compatible PCI ICU found: ICU vendor 0x8086 product 0x25a1
pcibios0: Warning, unable to fix up PCI interrupt routing
pcibios0: PCI bus #3 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1000 0xc9000/0x1000
0xec000/0x4000!
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82875P Host" rev 0x02
ppb0 at pci0 dev 3 function 0 "Intel 82875P PCI-CSA" rev 0x02
pci1 at ppb0 bus 1
em0 at pci1 dev 1 function 0 "Intel PRO/1000CT (82547EI)" rev 0x00: irq
3, address: 00:11:43:ce:38:da
ppb1 at pci0 dev 28 function 0 "Intel 6300ESB PCIX" rev 0x02
pci2 at ppb1 bus 2
uhci0 at pci0 dev 29 function 0 "Intel 6300ESB USB" rev 0x02: irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1 at pci0 dev 29 function 1 "Intel 5300ESB USB" rev 0x02: irq 10
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
"Intel 6300ESB WDT" rev 0x02 at pci0 dev 29 function 4 not configured
"Intel 6300ESB APIC" rev 0x02 at pci0 dev 29 function 5 not configured
ehci0 at pci0 dev 29 function 7 "Intel 6300ESB USB" rev 0x02: irq 7
ehci0: EHCI version 1.0
ehci0: companion controllers, 2 ports each: uhci0 uhci1
usb2 at ehci0: USB revision 2.0
uhub2 at usb2
uhub2: Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub2: 4 ports with 4 removable, self powered
ppb2 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0x0a
pci3 at ppb2 bus 3
em1 at pci3 dev 2 function 0 "Intel PRO/1000MT (82541EI)" rev 0x00: irq
11, address: 00:11:43:ce:38:db
vga1 at pci3 dev 14 function 0 "ATI Rage XL" rev 0x27
wsdisplay0 at vga1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
pcib0 at pci0 dev 31 function 0 "Intel 6300ESB LPC" rev 0x02
pciide0 at pci0 dev 31 function 2 "Intel 6300ESB SATA" rev 0x02: DMA
(unsupported), channel 0 configured to compatibility, channel 1
configured to compatibility
pciide0: channel 0 ignored (not responding; disabled or no drives?)
wd0 at pciide0 channel 1 drive 0: <WDC WD800JD-75JNA0>
wd0: 16-sector PIO, LBA, 76293MB, 156250000 sectors
"Intel 6300ESB SMBus" rev 0x02 at pci0 dev 31 function 3 not configured
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
sysbeep0 at pcppi0
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
biomask ffe5 netmask ffed ttymask ffef
pctr: user-level cycle counter enabled
dkcsum: wd0 matched BIOS disk 80
root on wd0a
rootdev=0x0 rrootdev=0x300 rawdev=0x302