I have the following setup, which is performing below my expectations.
I was wondering if any of the list subscribers could provide any tuning
tips:
Red Hat Linux 9
Tyan Thunder i7501 Pro (S2721-533) motherboard
2GB RAM
8 Ultra320 Seagate 15k.3 drives, 4 on each Ultra320 channel
no additional PCI/PCI-X devices installed
dmesg: http://zarzycki.org/~dave/dmesg
lspci -vvv: http://zarzycki.org/~dave/lspci-vv.out
These lines in the dmesg output seem troubling:
aic79xx: PCI4:2:1 MEM region 0x0 unavailable. Cannot memory map device.
aic79xx: PCI4:2:0 MEM region 0x0 unavailable. Cannot memory map device.
I seem to be topping out at 200 to 255MB/s depending on the setup
(messured with hdparm -t and dd), while each drive is capable of 72MB/s.
Dual Ultra320 with PCI-X should do better than this, right? I'd estimate
500+ MB/s given this setup. Am I being unreasonable?
Thanks for any help.
davez
-- Dave Zarzycki http://zarzycki.org/~dave/- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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