Nicolas Boulay wrote:
Super IO for x86 : gigabyte ethernet card 8 or 16 ports which are seen from
the host like one ethernet card (with pci-e speed), the card act like a big
switch (with a kind of routing). So you could make very fast interconnection
between server (imaging direct connection between calcul server and file
server).
You could also make a SATA RAID controller. The idea is to saturate a pci-e
link (2*300 MB/s). You could do it with 8 to 16 HD.
IO connections are the 2 domains where PC can't be compare with mainframe.
Standard (ethernet, SATA) put the cost down. What is lacking is a card to
connect the PC with the network and the HD.
A mainframe has what IBM called a Channel (I/O processor and DMA
controllers). To obtain this level of I/O performance, it is going to
be necessary to have I/O Channel cards. Intel tried offering an I/O
Channel chip with the 8086 and then they recommended using the 960
series chips. IIUC, in both cases M$ didn't like the idea. But, Linux
has Kernel support for this: I2O.
To take full advantage of this would require a different computer
architecture, but it is possible to have PCI or PCIe cards that do this.
--
JRT
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