HP ProLiant Servers AIS: Official Study Guide and Desk Reference

2017-07-07 02:10:07

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The next step in server evolution was bus mastering technology, as illustrated in Figure 2-3.

Figure 2-3. Bus mastering.

With bus mastering, multiple bus master devices contended for access to system memory. Multiple processors could transfer data directly to main memory. I/O adapters could also transfer data directly to main memory.

Although enabling I/O devices to be bus masters freed up processor resources, it caused contention for memory.

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Figure 2-3. Bus mastering.

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