Hi,
I am trying to figure out why the performance of PERC 4/SC RAID controller is
so poor. I've searched the archives
but nothing usefull came up. I'm running OpenBSD 3.8-release on a Dell
PowerEdge 1800 server, RAID 5.
# time (dd if=/dev/zero of=x bs=1m count=100; sync; sync)
100+0 records in
100+0 records out
104857600 bytes transferred in 9.765 secs (10737292 bytes/sec)
0m15.40s real 0m0.00s user 0m0.23s system
Any clues or this kind of throughput is normal?
Regards,
Mitja
Dmesg:
===========================================================================================
OpenBSD 3.8 (GENERIC) #138: Sat Sep 10 15:41:37 MDT 2005
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Xeon(TM) CPU 3.40GHz ("GenuineIntel" 686-class) 3.40 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,SSE3,MWAIT,EST,CNXT-ID
cpu0: Enhanced SpeedStep disabled by BIOS
real mem = 2146807808 (2096492K)
avail mem = 1952915456 (1907144K)
using 4278 buffers containing 107442176 bytes (104924K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 09/21/05, BIOS32 rev. 0 @ 0xffe90
pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfbb80/288 (16 entries)
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82801EB/ER LPC" rev 0x00)
pcibios0: PCI bus #6 is the last bus
bios0: ROM list: 0xc0000/0xb000! 0xcb000/0x800 0xcb800/0x2600 0xec000/0x4000!
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel E7710 SMCH" rev 0x09
ppb0 at pci0 dev 2 function 0 "Intel E7710 MCH PCIE" rev 0x09
pci1 at ppb0 bus 1
ppb1 at pci1 dev 0 function 0 "Intel PCIE-PCIE" rev 0x09
pci2 at ppb1 bus 2
mpt0 at pci2 dev 4 function 0 "Symbios Logic 53c1030" rev 0x08: irq 5
mpt0: sending FW Upload request to IOC (size: 36, img size: 40048)
mpt0: IM support: 0
scsibus0 at mpt0: 16 targets
ami0 at pci2 dev 5 function 0 "Symbios Logic MegaRAID" rev 0x01: irq 11 Dell
520/64b/lhc
ami0: FW 351S, BIOS v1.10, 64MB RAM
ami0: 1 channels, 0 FC loops, 1 logical drives
scsibus1 at ami0: 40 targets
sd0 at scsibus1 targ 0 lun 0: <AMI, Host drive #00, > SCSI2 0/direct fixed
sd0: 139760MB, 17816 cyl, 255 head, 63 sec, 512 bytes/sec, 286228480 sec total
scsibus2 at ami0: 16 targets
safte0 at scsibus2 targ 6 lun 0: <SDR, GEM318P, 1> SCSI2 3/processor fixed
ppb2 at pci1 dev 0 function 2 "Intel PCIE-PCIE" rev 0x09
pci3 at ppb2 bus 3
em0 at pci3 dev 7 function 0 "Intel PRO/1000MT (82541GI)" rev 0x05: irq 11,
address: 00:14:22:b3:bd:1e
ppb3 at pci0 dev 4 function 0 "Intel E7710 MCH PCIE" rev 0x09
pci4 at ppb3 bus 4
ppb4 at pci0 dev 6 function 0 "Intel E7710 MCH PCIE" rev 0x09
pci5 at ppb4 bus 5
uhci0 at pci0 dev 29 function 0 "Intel 82801EB/ER USB" rev 0x02: irq 11
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1 at pci0 dev 29 function 1 "Intel 82801EB/ER USB" rev 0x02: irq 10
usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2 at pci0 dev 29 function 2 "Intel 82801EB/ER USB" rev 0x02: irq 5
usb2 at uhci2: USB revision 1.0
uhub2 at usb2
uhub2: Intel UHCI root hub, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
ehci0 at pci0 dev 29 function 7 "Intel 82801EB/ER USB" rev 0x02: irq 3
usb3 at ehci0: USB revision 2.0
uhub3 at usb3
uhub3: Intel EHCI root hub, rev 2.00/1.00, addr 1
uhub3: 6 ports with 6 removable, self powered
ppb5 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0xc2
pci6 at ppb5 bus 6
vga1 at pci6 dev 5 function 0 "ATI Radeon VE QY" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
ichpcib0 at pci0 dev 31 function 0 "Intel 82801EB/ER LPC" rev 0x02
pciide0 at pci0 dev 31 function 1 "Intel 82801EB/ER IDE" rev 0x02: DMA, channel
0 configured to compatibility, channel 1
configured to compatibility
atapiscsi0 at pciide0 channel 0 drive 0
scsibus3 at atapiscsi0: 2 targets
cd0 at scsibus3 targ 0 lun 0: <HL-DT-ST, CD-ROM GCR-8483B, 1.10> SCSI0 5/cdrom
removable
cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
pciide0: channel 1 ignored (disabled)
pciide1 at pci0 dev 31 function 2 "Intel 82801EB SATA" rev 0x02: DMA, channel 0
configured to native-PCI, channel 1
configured to native-PCI
pciide1: using irq 5 for native-PCI interrupt
isa0 at ichpcib0
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
pmsi0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pmsi0 mux 0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
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
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask ef6d netmask ef6d ttymask ffef
pctr: user-level cycle counter enabled
dkcsum: sd0 matches BIOS drive 0x80
root on sd0a
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
