Sun Microsystems Fire X4800, Руководство по установке

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Allocating MSI Interrupt Space (Oracle Solaris OS Only)
The Oracle Solaris OS is designed to allocate 32 interrupt vectors at priority level six. Because
each network device is assigned two interrupts, if the system contains more than 16 network
devices the available interrupts at priority level 6 will be exhausted, leaving some devices
non-functional.
Note –
The Oracle Solaris OS is currently limited to 31 interrupts at priority level six, meaning
that it can support only 15 network devices on level six. This will be fixed in a future patch or
release.
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How to Identify and Fix Interrupt Resource Shortages
When you encounter a shortage of I/O interrupts on level 6, Oracle recommends that you
assign one of the drivers to interrupt level 5 or 4.
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Interrupt level 5 is the first priority
■
Interrupt level 4 is next
The following table shows the I/O devices, ports, and interrupts in an eight–socket system.
Device Driver Number of Ports Number of Interrupts
Maximum per driver = 16 Maximum on level 6 = 32
Onboard NIC (required) igb 2 per CPU module/8 total 4 per CPU module/16 total
Dual-port 10 Gb Ethernet EM ixgbe 2 per EM/16 total 4 per EM/32 total
FEM ixgbe 2 per FEM/8 total 4 per FEM/16 total
Quad-port 1 Gb Ethernet EM e1000g 4 per EM/32 total 8 per EM/64 total
REM (1 per server) mr_sas 1 1
Boot your server.
Boot messages appear.
The examples in this procedure show a system where ixgbe and igb are both on interrupt level 6,
which is the default. In this system, ixgbe requires 24 interrupts and igb requires 16, for a total of
40. However, level 6 provides only 31.
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Allocating MSI Interrupt Space (Oracle Solaris OS Only)
Sun Fire X4800 Server Installation Guide • —12, March 2011 132