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In-cache
performance is a blazing 60K search operations or 30K
modification operations per second per GHz. Applications
can trade this high performance for simplicity of implementation
in many situations. Embedded environments often have slow
processors, and high performance is critical.
Disk
I/O is highly concurrent - see our US Patent 5,283,894:
'Lockless Concurrent B-Tree'. Threads whose working sets
are in the cache are never delayed by those which need data
from disk; this smooths response time, increases throughput,
and boosts Threads needing only localized data.
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